1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
|
//! <b>Outer-Open Gomoku</b> is a board game which is a enhanced version of connect5 (Gomoku).\
//! The game is a two-player game which played on a 15x15 Go board.\
//! Two players take turns placing a move on an empty intersection in this board.\
//! The winner is the first player to form an unbroken chain of five moves horizontally, vertically, or diagonally.\
//! Unlike Gomoku, the first move is required to be placed at the two outer rows or columns of this board.\
//! This program provides an AI playing with Minimax search with alpha-beta pruning which uses
//! patterns on evaluation.\
//! The avx512 intrinsic can do 32 pattern matching at one time.\
//! This avx512 is tested with non-avx512 code to verify its correctness.\
//!
//! On Intel i7-7800x using single thread with fixed AVX-512 clock at 4.0GHz, the avx512 is speed up about 9x.\
//! The average time for each move in the avx512 is around 14.00s <span>±</span> 1.31s and in the non-avx512
//! is 129.02s <span>±</span> 4.96s.\
//! On Intel Tiger Lake i7-1165G7, the avx512 is around 11.11s <span>±</span> 1.31s.
//!
//! <b>Pattern Matching</b>\
//! Use 512-bit to present the board state. The location 0 is top left.\
//! 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <b>15</b>\
//! 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 <b>31</b>\
//! ...\
//! Pattern "OOOOO" is matching through "0 1 2 3 4", "1 2 3 4 5", ...\
//! Using avx512, "0 1 2 3 4", "16 17 18 19 20", ... can be matched simultaneously.\
//!
//! //! You can test out this program via:
//!
//! cargo +nightly run --release --bin connect5
//!
//! You should see a game self-playing. In the end of the game, it shows the average time for
//! each move.
#![allow(internal_features)]
#![feature(avx512_target_feature)]
#![cfg_attr(target_arch = "x86", feature(stdarch_x86_avx512, stdarch_internal))]
#![cfg_attr(target_arch = "x86_64", feature(stdarch_x86_avx512, stdarch_internal))]
#![feature(stmt_expr_attributes)]
use rand::seq::SliceRandom;
use rand::thread_rng;
use std::cmp;
use std::time::Instant;
#[cfg(target_arch = "x86")]
use {core_arch::arch::x86::*, std_detect::is_x86_feature_detected};
#[cfg(target_arch = "x86_64")]
use {core_arch::arch::x86_64::*, std_detect::is_x86_feature_detected};
// types
#[derive(Clone, Copy, PartialEq, Eq)]
pub enum Color {
Black = 0,
White = 1,
Empty = 2,
Border = 3,
}
type Square = i32;
type Move = i32;
type Side = Color;
// constants
const FILE_SIZE: i32 = 15;
const RANK_SIZE: i32 = 15;
const SQUARE_SIZE: i32 = (FILE_SIZE + 1) * (FILE_SIZE + 4) + 16 + 4;
const EVAL_INF: i32 = FILE_SIZE * RANK_SIZE * 100;
const MOVE_NONE: Move = -1;
const SCORE_NONE: i32 = -EVAL_INF - 1;
/// DIRECTION 0: left to right\
/// DIRECTION 1: top to bottom\
/// DIRECTION 2: top left to bottom right\
/// DIRECTION 3: top right to bottom left
#[rustfmt::skip]
#[allow(clippy::identity_op)]
const DIRECTION: [[i32; 5]; 4] = [ [1, 2, 3, 4, 5],
[1 * (FILE_SIZE + 1), 2 * (FILE_SIZE + 1), 3 * (FILE_SIZE + 1), 4 * (FILE_SIZE + 1), 5 * (FILE_SIZE + 1)],
[1 * (FILE_SIZE + 2), 2 * (FILE_SIZE + 2), 3 * (FILE_SIZE + 2), 4 * (FILE_SIZE + 2), 5 * (FILE_SIZE + 2)],
[1 * (FILE_SIZE + 0), 2 * (FILE_SIZE + 0), 3 * (FILE_SIZE + 0), 4 * (FILE_SIZE + 0), 5 * (FILE_SIZE + 0)]];
/// A table to encode each location to a value in bit 31-0 in the bitboard for 4 direction
#[rustfmt::skip]
const MAPMOVEVALUE: [[i32; 239]; 4] = [ [// Direction 0
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17, 0,
1<<31, 1<<30, 1<<29, 1<<28, 1<<27, 1<<26, 1<<25, 1<<24, 1<<23, 1<<22, 1<<21, 1<<20, 1<<19, 1<<18, 1<<17],
[// Direction 1
1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 1<<31, 0,
1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 1<<30, 0,
1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 1<<29, 0,
1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 1<<28, 0,
1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 1<<27, 0,
1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 1<<26, 0,
1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 1<<25, 0,
1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 1<<24, 0,
1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 1<<23, 0,
1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 1<<22, 0,
1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 1<<21, 0,
1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 1<<20, 0,
1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 1<<19, 0,
1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 1<<18, 0,
1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17, 1<<17],
[// Direction 2
1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 0, 0, 0, 0, 0,
1<<15, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 0, 0, 0, 0,
1<<15, 1<<14, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 0, 0, 0,
1<<15, 1<<14, 1<<13, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 0, 0,
1<<15, 1<<14, 1<<13, 1<<12, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 0,
1<<15, 1<<14, 1<<13, 1<<12, 1<<11, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 0,
1<<9, 1<<14, 1<<13, 1<<12, 1<<11, 1<<10, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 0,
1<<8, 1<<8, 1<<13, 1<<12, 1<<11, 1<<10, 1<<9, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 0,
1<<7, 1<<7, 1<<7, 1<<12, 1<<11, 1<<10, 1<<9, 1<<8, 1<<7, 1<<7, 1<<7, 1<<7, 1<<7, 1<<7, 1<<7, 0,
1<<6, 1<<6, 1<<6, 1<<6, 1<<11, 1<<10, 1<<9, 1<<8, 1<<7, 1<<6, 1<<6, 1<<6, 1<<6, 1<<6, 1<<6, 0,
1<<5, 1<<5, 1<<5, 1<<5, 1<<5, 1<<10, 1<<9, 1<<8, 1<<7, 1<<6, 1<<5, 1<<5, 1<<5, 1<<5, 1<<5, 0,
0, 1<<4, 1<<4, 1<<4, 1<<4, 1<<4, 1<<9, 1<<8, 1<<7, 1<<6, 1<<5, 1<<4, 1<<4, 1<<4, 1<<4, 0,
0, 0, 1<<3, 1<<3, 1<<3, 1<<3, 1<<3, 1<<8, 1<<7, 1<<6, 1<<5, 1<<4, 1<<3, 1<<3, 1<<3, 0,
0, 0, 0, 1<<2, 1<<2, 1<<2, 1<<2, 1<<2, 1<<7, 1<<6, 1<<5, 1<<4, 1<<3, 1<<2, 1<<2, 0,
0, 0, 0, 0, 1<<1, 1<<1, 1<<1, 1<<1, 1<<1, 1<<6, 1<<5, 1<<4, 1<<3, 1<<2, 1<<1],
[// Direction 3
0, 0, 0, 0, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 1<<15, 0,
0, 0, 0, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<14, 1<<15, 0,
0, 0, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<13, 1<<14, 1<<15, 0,
0, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<12, 1<<13, 1<<14, 1<<15, 0,
1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<11, 1<<12, 1<<13, 1<<14, 1<<15, 0,
1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<10, 1<<11, 1<<12, 1<<13, 1<<14, 1<<15, 0,
1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<9, 1<<10, 1<<11, 1<<12, 1<<13, 1<<14, 1<<9, 0,
1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<8, 1<<9, 1<<10, 1<<11, 1<<12, 1<<13, 1<<8, 1<<8, 0,
1<<7, 1<<7, 1<<7, 1<<7, 1<<7, 1<<7, 1<<7, 1<<8, 1<<9, 1<<10, 1<<11, 1<<12, 1<<7, 1<<7, 1<<7, 0,
1<<6, 1<<6, 1<<6, 1<<6, 1<<6, 1<<6, 1<<7, 1<<8, 1<<9, 1<<10, 1<<11, 1<<6, 1<<6, 1<<6, 1<<6, 0,
1<<5, 1<<5, 1<<5, 1<<5, 1<<5, 1<<6, 1<<7, 1<<8, 1<<9, 1<<10, 1<<5, 1<<5, 1<<5, 1<<5, 1<<5, 0,
1<<4, 1<<4, 1<<4, 1<<4, 1<<5, 1<<6, 1<<7, 1<<8, 1<<9, 1<<4, 1<<4, 1<<4, 1<<4, 1<<4, 0, 0,
1<<3, 1<<3, 1<<3, 1<<4, 1<<5, 1<<6, 1<<7, 1<<8, 1<<3, 1<<3, 1<<3, 1<<3, 1<<3, 0, 0, 0,
1<<2, 1<<2, 1<<3, 1<<4, 1<<5, 1<<6, 1<<7, 1<<2, 1<<2, 1<<2, 1<<2, 1<<2, 0, 0, 0, 0,
1<<1, 1<<2, 1<<3, 1<<4, 1<<5, 1<<6, 1<<1, 1<<1, 1<<1, 1<<1, 1<<1, 0, 0, 0, 0]
];
/// A table to encode each location to an index in the bitboard for 4 direction
#[rustfmt::skip]
const MAPMOVEIDX: [[i32; 239]; 4] = [ [// Direction 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 0,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 0,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 0,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 0,
9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 0,
10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 0,
11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 0,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 0,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 0,
14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14],
[// Direction 1
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14],
[// Direction 2
10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0, 0,
11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0,
12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0,
13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0,
14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0,
15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0,
1, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 0,
2, 1, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 0,
3, 2, 1, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 0,
4, 3, 2, 1, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 0,
5, 4, 3, 2, 1, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 0,
0, 5, 4, 3, 2, 1, 15, 14, 13, 12, 11, 10, 9, 8, 7, 0,
0, 0, 5, 4, 3, 2, 1, 15, 14, 13, 12, 11, 10, 9, 8, 0,
0, 0, 0, 5, 4, 3, 2, 1, 15, 14, 13, 12, 11, 10, 9, 0,
0, 0, 0, 0, 5, 4, 3, 2, 1, 15, 14, 13, 12, 11, 10],
[// Direction 3
0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 0,
0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0,
0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 0,
0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 0,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 0,
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 0,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 0,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 0,
6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 0,
7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 0, 0,
8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 0, 0, 0,
9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 0, 0, 0, 0,
10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 0, 0, 0, 0]
];
// structures
/// Use one-dimensional array to store the board state. The location 0 is top left.\
/// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 <b>15</b>\
/// 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 <b>31</b>\
/// ... \
/// position 15, 31, ... are Borders.\
/// position 0 is file 0, rank 0.\
/// position 17 is file 1, rank 1.\
///
/// Use a three-dimensional array to store the bitboard.\
/// The first dimension is color: Black, White and Empty.\
/// The second and third one are 2 x 512-bit. Direction 0 and 2 use the first 512-bit. Direction 1 and
/// 3 use the second 512-bit.\
/// Each 512-bit is a 32-bit x 16 array. Direction 0 and 1 store at bit 31-16 and Direction 2 and 3 store at bit 15-0.
pub struct Pos {
// position
state: [Color; SQUARE_SIZE as usize],
p_turn: Side,
bitboard: [[[i32; 16]; 2]; 3],
}
impl Pos {
pub fn init(&mut self) {
// starting position
// Set up the Border
for i in 0..SQUARE_SIZE as usize {
self.state[i] = Color::Border;
}
// In the beginning, all is Empty
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
self.state[sq as usize] = Color::Empty;
}
}
// first move is Black
self.p_turn = Color::Black;
let black = Color::Black as usize;
let white = Color::White as usize;
let empty = Color::Empty as usize;
// set up the corresponding bitboard
for i in 0..2 {
for j in 0..16 {
self.bitboard[black][i][j] = 0;
self.bitboard[white][i][j] = 0;
self.bitboard[empty][i][j] = 0;
}
}
for i in 0..2 {
// use bit 31-16 to store direction 0 and 1
#[rustfmt::skip]
for j in 0..FILE_SIZE as usize {
self.bitboard[empty][i][j] = (1<<31)|(1<<30)|(1<<29)|(1<<28)|(1<<27)|(1<<26)|(1<<25)|(1<<24)|(1<<23)|(1<<22)|(1<<21)|(1<<20)|(1<<19)|(1<<18)|(1<<17);
}
}
// use bit 15-0 to store direction 2 and 3. There are 21 for each one. We combine row1 and row16, row2 and row17, row3 and row18, row4 and row19, and row 5 and row20
#[rustfmt::skip]
for i in 0..2 {
self.bitboard[empty][i][0] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11); //row 0
self.bitboard[empty][i][1] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)/*row1*/|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1);//row16
self.bitboard[empty][i][2] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)/*row2*/|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1);//row17
self.bitboard[empty][i][3] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)/*row3*/|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1);//row18
self.bitboard[empty][i][4] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)/*row4*/|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1);//row19
self.bitboard[empty][i][5] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)/*row5*/|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1);//row20
self.bitboard[empty][i][6] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5);//row6
self.bitboard[empty][i][7] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4);//row7
self.bitboard[empty][i][8] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3);//row8
self.bitboard[empty][i][9] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2);//row9
self.bitboard[empty][i][10] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2)|(1<<1);//row10
self.bitboard[empty][i][11] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3)|(1<<2);//row11
self.bitboard[empty][i][12] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4)|(1<<3);//row12
self.bitboard[empty][i][13] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5)|(1<<4);//row13
self.bitboard[empty][i][14] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6)|(1<<5);//row14
self.bitboard[empty][i][15] |= (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)|(1<<8)|(1<<7)|(1<<6);//row15
}
}
pub fn do_move(&mut self, mv: Move) {
let atk: Side = self.p_turn;
let def: Side = side_opp(atk);
let mv = mv as usize;
let black = Color::Black as usize;
let white = Color::White as usize;
let empty = Color::Empty as usize;
match self.p_turn {
Color::Black => {
self.state[mv] = Color::Black;
// update black move and remove empty move in bitboard
self.bitboard[black][0][MAPMOVEIDX[0][mv] as usize] |= MAPMOVEVALUE[0][mv];
self.bitboard[empty][0][MAPMOVEIDX[0][mv] as usize] ^= MAPMOVEVALUE[0][mv];
self.bitboard[black][1][MAPMOVEIDX[1][mv] as usize] |= MAPMOVEVALUE[1][mv];
self.bitboard[empty][1][MAPMOVEIDX[1][mv] as usize] ^= MAPMOVEVALUE[1][mv];
self.bitboard[black][0][MAPMOVEIDX[2][mv] as usize] |= MAPMOVEVALUE[2][mv];
self.bitboard[empty][0][MAPMOVEIDX[2][mv] as usize] ^= MAPMOVEVALUE[2][mv];
self.bitboard[black][1][MAPMOVEIDX[3][mv] as usize] |= MAPMOVEVALUE[3][mv];
self.bitboard[empty][1][MAPMOVEIDX[3][mv] as usize] ^= MAPMOVEVALUE[3][mv];
}
Color::White => {
self.state[mv] = Color::White;
// update white move and remove empty move in bitboard
self.bitboard[white][0][MAPMOVEIDX[0][mv] as usize] |= MAPMOVEVALUE[0][mv];
self.bitboard[empty][0][MAPMOVEIDX[0][mv] as usize] ^= MAPMOVEVALUE[0][mv];
self.bitboard[white][1][MAPMOVEIDX[1][mv] as usize] |= MAPMOVEVALUE[1][mv];
self.bitboard[empty][1][MAPMOVEIDX[1][mv] as usize] ^= MAPMOVEVALUE[1][mv];
self.bitboard[white][0][MAPMOVEIDX[2][mv] as usize] |= MAPMOVEVALUE[2][mv];
self.bitboard[empty][0][MAPMOVEIDX[2][mv] as usize] ^= MAPMOVEVALUE[2][mv];
self.bitboard[white][1][MAPMOVEIDX[3][mv] as usize] |= MAPMOVEVALUE[3][mv];
self.bitboard[empty][1][MAPMOVEIDX[3][mv] as usize] ^= MAPMOVEVALUE[3][mv];
}
_ => panic! {},
}
self.p_turn = def;
}
fn turn(&self) -> Side {
self.p_turn
}
pub fn can_play(&self, from: Square) -> bool {
self.state[from as usize] == Color::Empty
}
}
pub struct List {
// legal move list
p_move: [Move; (FILE_SIZE * RANK_SIZE) as usize],
p_size: i32,
}
/// Use List to store legal moves.
impl List {
pub fn clear(&mut self) {
self.p_size = 0;
}
pub fn add(&mut self, mv: Move) {
self.p_move[self.p_size as usize] = mv;
self.p_size += 1;
}
pub fn size(&self) -> i32 {
self.p_size
}
pub fn shuffle(&mut self) {
let mut rng = thread_rng();
let num = self.p_size as usize;
self.p_move[..num].shuffle(&mut rng);
}
}
// functions
fn square_make(fl: i32, rk: i32) -> Square {
rk * (FILE_SIZE + 1) + fl
}
fn side_opp(sd: Side) -> Side {
match sd {
Side::White => Side::Black,
Side::Black => Side::White,
_ => panic!(""),
}
}
fn pos_is_winner(pos: &Pos) -> bool {
let current_side = side_opp(pos.p_turn);
check_pattern5(pos, current_side)
}
fn pos_is_draw(pos: &Pos) -> bool {
let mut found: bool = true;
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
if pos.can_play(sq) {
found = false;
break;
}
if !found {
break;
}
}
}
found && !pos_is_winner(pos)
}
#[target_feature(enable = "avx512f,avx512bw")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
unsafe fn pos_is_draw_avx512(pos: &Pos) -> bool {
let empty = Color::Empty as usize;
let board0org = _mm512_loadu_epi32(&pos.bitboard[empty][0][0]);
let answer = _mm512_set1_epi32(0);
// if all empty is 0, all board is filled.
let temp_mask = _mm512_mask_cmpneq_epi32_mask(0b11111111_11111111, answer, board0org);
_popcnt32(temp_mask as i32) == 0 && !pos_is_winner_avx512(pos)
}
fn pos_is_end(pos: &Pos) -> bool {
pos_is_winner(pos) || pos_is_draw(pos)
}
fn pos_disp(pos: &Pos) {
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
match pos.state[sq as usize] {
Color::Black => print!("# "),
Color::White => print!("O "),
Color::Empty => print!("- "),
Color::Border => print!("| "),
}
}
println!();
}
match pos.turn() {
Color::Black => println!("black to play"),
Color::White => println!("white to play"),
_ => panic!(),
}
}
fn gen_moves(list: &mut List, pos: &Pos) {
list.clear();
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
if pos.can_play(sq) {
list.add(sq);
}
}
}
}
/// AI: use Minimax search with alpha-beta pruning
fn search(pos: &Pos, alpha: i32, beta: i32, depth: i32, _ply: i32) -> i32 {
assert!(-EVAL_INF <= alpha && alpha < beta && beta <= EVAL_INF);
// leaf?
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
if is_x86_feature_detected!("avx512bw") {
unsafe {
if pos_is_winner_avx512(pos) {
return -EVAL_INF + _ply;
}
if pos_is_draw_avx512(pos) {
return 0;
}
}
} else {
if pos_is_winner(pos) {
return -EVAL_INF + _ply;
}
if pos_is_draw(pos) {
return 0;
}
}
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
if pos_is_winner(pos) {
return -EVAL_INF + _ply;
}
if pos_is_draw(pos) {
return 0;
}
}
if depth == 0 {
return eval(pos, _ply);
}
let p_move_new: [Move; (FILE_SIZE * RANK_SIZE) as usize] =
[0; (FILE_SIZE * RANK_SIZE) as usize];
let mut list = List {
p_move: p_move_new,
p_size: 0,
};
let mut bm: Move = MOVE_NONE;
let mut bs: i32 = SCORE_NONE;
gen_moves(&mut list, pos);
// move loop
if _ply == 0 {
list.shuffle();
}
for i in 0..list.size() {
if bs < beta {
let mv: Move = list.p_move[i as usize];
let mut new_pos = Pos {
state: pos.state,
p_turn: pos.p_turn,
bitboard: pos.bitboard,
};
new_pos.do_move(mv);
let sc: i32 = -search(&new_pos, -beta, -cmp::max(alpha, bs), depth - 1, _ply + 1);
if sc > bs {
bm = mv;
bs = sc;
}
}
}
assert_ne!(bm, MOVE_NONE);
assert!(bs >= -EVAL_INF && bs <= EVAL_INF);
if _ply == 0 {
bm
} else {
bs
} //best move at the root node, best score elsewhere
}
/// Evaluation function: give different scores to different patterns after a fixed depth.
fn eval(pos: &Pos, _ply: i32) -> i32 {
let atk: Side = pos.turn();
let def: Side = side_opp(atk);
// check if opp has live4 which will win playing next move
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
if is_x86_feature_detected!("avx512bw") {
unsafe {
if check_patternlive4_avx512(pos, def) {
return -4096;
}
}
} else {
if check_patternlive4(pos, def) {
return -4096;
}
}
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
if check_patternlive4(pos, def) {
return -4096;
}
}
// check if self has live4 which will win playing next move
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
if is_x86_feature_detected!("avx512bw") {
unsafe {
if check_patternlive4_avx512(pos, atk) {
return 2560;
}
}
} else {
if check_patternlive4(pos, atk) {
return 2560;
}
}
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
if check_patternlive4(pos, atk) {
return 2560;
}
}
// check if self has dead4 which will win playing next move
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
if is_x86_feature_detected!("avx512bw") {
unsafe {
if check_patterndead4_avx512(pos, atk) > 0 {
return 2560;
}
}
} else {
if check_patterndead4(pos, atk) > 0 {
return 2560;
}
}
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
if check_patterndead4(pos, atk) > 0 {
return 2560;
}
}
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
if is_x86_feature_detected!("avx512bw") {
unsafe {
let n_c4: i32 = check_patterndead4_avx512(pos, def);
let n_c3: i32 = check_patternlive3_avx512(pos, def);
// check if opp has 2 dead4 which will win playing next move
if n_c4 > 1 {
return -2048;
}
// check if opp has a dead 4 and live 3 which will win playing the next two move
if n_c4 == 1 && n_c3 > 0 {
return -2048;
}
if check_patternlive3_avx512(pos, atk) > 1 {
return 2560;
}
// check if opp has 2 live3 which will win playing the next two move
if n_c3 > 1 {
return -2048;
}
}
} else {
let n_c4: i32 = check_patterndead4(pos, def);
let n_c3: i32 = check_patternlive3(pos, def);
// check if opp has 2 dead4 which will win playing next move
if n_c4 > 1 {
return -2048;
}
// check if opp has a dead 4 and live 3 which will win playing the next two move
if n_c4 == 1 && n_c3 > 0 {
return -2048;
}
// check if self has 2 live3 which will win playing the next two move
if check_patternlive3(pos, atk) > 1 {
return 2560;
}
// check if opp has 2 live3 which will win playing the next two move
if n_c3 > 1 {
return -2048;
}
}
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
let n_c4: i32 = check_patterndead4(pos, def);
let n_c3: i32 = check_patternlive3(pos, def);
// check if opp has 2 dead4 which will win playing next move
if n_c4 > 1 {
return -2048;
}
// check if opp has a dead 4 and live 3 which will win playing the next two move
if n_c4 == 1 && n_c3 > 0 {
return -2048;
}
// check if self has 2 live3 which will win playing the next two move
if check_patternlive3(pos, atk) > 1 {
return 2560;
}
// check if opp has 2 live3 which will win playing the next two move
if n_c3 > 1 {
return -2048;
}
}
0
}
/// Check <b>OOOOO</b>
fn check_pattern5(pos: &Pos, sd: Side) -> bool {
let mut n: i32 = 0;
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
for pat in 0..4 {
let idx0 = sq;
let idx1 = sq + DIRECTION[pat][0];
let idx2 = sq + DIRECTION[pat][1];
let idx3 = sq + DIRECTION[pat][2];
let idx4 = sq + DIRECTION[pat][3];
let val0 = pos.state[idx0 as usize];
let val1 = pos.state[idx1 as usize];
let val2 = pos.state[idx2 as usize];
let val3 = pos.state[idx3 as usize];
let val4 = pos.state[idx4 as usize];
#[rustfmt::skip]
if val0 == sd && val1 == sd && val2 == sd && val3 == sd && val4 == sd { n += 1; }
}
}
}
n > 0
}
/// Check <b>-OOOO-</b>
fn check_patternlive4(pos: &Pos, sd: Side) -> bool {
let mut n: i32 = 0;
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
for pat in 0..4 {
let idx0 = sq;
let idx1 = sq + DIRECTION[pat][0];
let idx2 = sq + DIRECTION[pat][1];
let idx3 = sq + DIRECTION[pat][2];
let idx4 = sq + DIRECTION[pat][3];
let idx5 = sq + DIRECTION[pat][4];
let val0 = pos.state[idx0 as usize];
let val1 = pos.state[idx1 as usize];
let val2 = pos.state[idx2 as usize];
let val3 = pos.state[idx3 as usize];
let val4 = pos.state[idx4 as usize];
let val5 = pos.state[idx5 as usize];
#[rustfmt::skip]
if val0 == Color::Empty && val1 == sd && val2 == sd && val3 == sd && val4 == sd && val5 == Color::Empty { n += 1; }
}
}
}
n > 0
}
/// Check <b>OOOO-, OOO-O, OO-OO, O-OOO, -OOOO</b>
fn check_patterndead4(pos: &Pos, sd: Side) -> i32 {
let mut n: i32 = 0;
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
for dir in 0..4 {
let idx0 = sq;
let idx1 = sq + DIRECTION[dir][0];
let idx2 = sq + DIRECTION[dir][1];
let idx3 = sq + DIRECTION[dir][2];
let idx4 = sq + DIRECTION[dir][3];
let val0 = pos.state[idx0 as usize];
let val1 = pos.state[idx1 as usize];
let val2 = pos.state[idx2 as usize];
let val3 = pos.state[idx3 as usize];
let val4 = pos.state[idx4 as usize];
#[rustfmt::skip]
if val0 == sd && val1 == sd && val2 == sd && val3 == sd && val4 == Color::Empty { n += 1; }
#[rustfmt::skip]
if val0 == sd && val1 == sd && val2 == sd && val3 == Color::Empty && val4 == sd { n += 1; }
#[rustfmt::skip]
if val0 == sd && val1 == sd && val2 == Color::Empty && val3 == sd && val4 == sd { n += 1; }
#[rustfmt::skip]
if val0 == sd && val1 == Color::Empty && val2 == sd && val3 == sd && val4 == sd { n += 1; }
#[rustfmt::skip]
if val0 == Color::Empty && val1 == sd && val2 == sd && val3 == sd && val4 == sd { n += 1; }
}
}
}
n
}
/// Check <b>-OOO-, -OO-O-, -O-OO-</b>
fn check_patternlive3(pos: &Pos, sd: Side) -> i32 {
let mut n: i32 = 0;
for rk in 0..RANK_SIZE {
for fl in 0..FILE_SIZE {
let sq: Square = square_make(fl, rk);
for dir in 0..4 {
let idx0 = sq;
let idx1 = sq + DIRECTION[dir][0];
let idx2 = sq + DIRECTION[dir][1];
let idx3 = sq + DIRECTION[dir][2];
let idx4 = sq + DIRECTION[dir][3];
let idx5 = sq + DIRECTION[dir][4];
let val0 = pos.state[idx0 as usize];
let val1 = pos.state[idx1 as usize];
let val2 = pos.state[idx2 as usize];
let val3 = pos.state[idx3 as usize];
let val4 = pos.state[idx4 as usize];
let val5 = pos.state[idx5 as usize];
#[rustfmt::skip]
if val0 == Color::Empty && val1 == sd && val2 == sd && val3 == sd && val4 == Color::Empty { n +=1; }
#[rustfmt::skip]
if val0 == Color::Empty && val1 == sd && val2 == sd && val3 == Color::Empty && val4 == sd && val5 == Color::Empty { n += 1; }
#[rustfmt::skip]
if val0 == Color::Empty && val1 == sd && val2 == Color::Empty && val3 == sd && val4 == sd && val5 == Color::Empty { n += 1; }
}
}
}
n
}
#[target_feature(enable = "avx512f,avx512bw")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
unsafe fn pos_is_winner_avx512(pos: &Pos) -> bool {
let current_side = side_opp(pos.p_turn);
let coloridx = current_side as usize;
let board0org: [__m512i; 2] = [
_mm512_loadu_epi32(&pos.bitboard[coloridx][0][0]),
_mm512_loadu_epi32(&pos.bitboard[coloridx][1][0]),
]; // load states from bitboard
#[rustfmt::skip]
let answer = _mm512_set1_epi16((1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)); // an unbroken chain of five moves
// use Mask to filter out which data is not processed.
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
// 1 x x x x _ _ _ _ _ _ _ _ _ _ _ 0 x o x o x 0 0 0 0 0 0 0 0 0 0 0
// 2 x _ _ _ _ o _ x o _ _ _ _ _ _ 0 x o _ _ _ _ _| x x o o o x x _ _
// . ...
// . ...
// . ...
// 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x o x o o o o o o o 0 0 0 0 0 0
//
// answer_mask[0]: 01_11..............: "0" is in row 16 and column 1-16.
// There is no data to match (x = black, o = white, _ = empty, 0 = no data).
//
//
// Then, shift one space left.
// 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
// 1 x x x _ _ _ _ _ _ _ _ _ _ _ 0 x o x o x 0 0 0 0 0 0 0 0 0 0 0 0
// . ...
// . ...
// . ...
// 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x o x o o o o o o o 0 0 0 0 0 0 0
// answer_mask[1]: ................_10: "0" is in row 1 and column 17-32;
// There is no enough data to match (o x o x but we want to match o o o o o).
//
// answer_mask[2]: mix 2 data together (column 17-23 and column 24-32). Using Mask to make it match correctly.
// For example, column 23,24,25,26,27 is not a pattern and 24,25,26,27,28 is a pattern.
// That is why some mask bits are set to 0 from answer_mask[2] to answer_mask[10].
#[rustfmt::skip]
let answer_mask: [__mmask32; 11] = [0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_11,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_10_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_10_10_10_10_10,
0b00_11_11_11_11_11_11_11_11_11_10_10_10_10_11_10,
0b00_10_11_11_11_11_11_11_11_10_10_10_10_11_11_10,
0b00_10_10_11_11_11_11_11_10_10_10_10_11_11_11_10,
0b00_10_10_10_11_11_11_10_10_10_10_11_11_11_11_10,
0b00_10_10_10_10_11_10_10_10_10_11_11_11_11_11_10];
let mut count_match: i32 = 0;
for dir in 0..2 {
// direction 0 and 1
let mut board0 = board0org[dir];
let boardf = _mm512_and_si512(answer, board0);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[0], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
for i in 1..11 {
// OOOOOOOOOOO----, the last 4 "-" cannot make an unbroken chain of five.
board0 = _mm512_slli_epi32(board0, 1); // shift one space left
let boardf = _mm512_and_si512(answer, board0); // focus on the pattern
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[i], answer, boardf); // see if it matches the pattern
count_match += _popcnt32(temp_mask as i32);
}
}
count_match > 0
}
#[target_feature(enable = "avx512f,avx512bw")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
unsafe fn check_patternlive4_avx512(pos: &Pos, sd: Side) -> bool {
let coloridx = sd as usize;
let emptyidx = Color::Empty as usize;
#[rustfmt::skip]
let answer_color = _mm512_set1_epi16( (1<<14)|(1<<13)|(1<<12)|(1<<11) );
#[rustfmt::skip]
let answer_empty = _mm512_set1_epi16( (1<<15)| (1<<10) );
#[rustfmt::skip]
let answer = _mm512_set1_epi16( (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10) );
#[rustfmt::skip]
let answer_mask: [__mmask32; 10] = [0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_10_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_10_10_10_10_10,
0b00_11_11_11_11_11_11_11_11_11_10_10_10_10_10_10,
0b00_10_11_11_11_11_11_11_11_10_10_10_10_10_11_10,
0b00_10_10_11_11_11_11_11_10_10_10_10_10_11_11_10,
0b00_10_10_10_11_11_11_10_10_10_10_10_11_11_11_10,
0b00_10_10_10_10_11_10_10_10_10_10_11_11_11_11_10];
let board0org: [__m512i; 2] = [
_mm512_loadu_epi32(&pos.bitboard[coloridx][0][0]),
_mm512_loadu_epi32(&pos.bitboard[coloridx][1][0]),
];
let board1org: [__m512i; 2] = [
_mm512_loadu_epi32(&pos.bitboard[emptyidx][0][0]),
_mm512_loadu_epi32(&pos.bitboard[emptyidx][1][0]),
];
let mut count_match: i32 = 0;
for dir in 0..2 {
let mut board0 = board0org[dir];
let mut board1 = board1org[dir];
let boardf1 = _mm512_and_si512(answer_color, board0);
let boardf2 = _mm512_and_si512(answer_empty, board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[0], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
for i in 1..10 {
board0 = _mm512_slli_epi32(board0, 1);
board1 = _mm512_slli_epi32(board1, 1);
let boardf1 = _mm512_and_si512(answer_color, board0);
let boardf2 = _mm512_and_si512(answer_empty, board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[i], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
}
}
count_match > 0
}
#[target_feature(enable = "avx512f,avx512bw")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
unsafe fn check_patterndead4_avx512(pos: &Pos, sd: Side) -> i32 {
let coloridx = sd as usize;
let emptyidx = Color::Empty as usize;
#[rustfmt::skip]
let answer_color: [__m512i; 5] = [_mm512_set1_epi16( (1<<14)|(1<<13)|(1<<12)|(1<<11) ),
_mm512_set1_epi16( (1<<15)| (1<<13)|(1<<12)|(1<<11) ),
_mm512_set1_epi16( (1<<15)|(1<<14) |(1<<12)|(1<<11) ),
_mm512_set1_epi16( (1<<15)|(1<<14)|(1<<13) |(1<<11) ),
_mm512_set1_epi16( (1<<15)|(1<<14)|(1<<13)|(1<<12) )];
#[rustfmt::skip]
let answer_empty: [__m512i; 5]= [_mm512_set1_epi16( 1<<15 ),
_mm512_set1_epi16( 1<<14 ),
_mm512_set1_epi16( 1<<13 ),
_mm512_set1_epi16( 1<<12 ),
_mm512_set1_epi16( 1<<11)];
#[rustfmt::skip]
let answer = _mm512_set1_epi16( (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11));
#[rustfmt::skip]
let answer_mask: [__mmask32; 11] = [0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_11,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_10_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_10_10_10_10_10,
0b00_11_11_11_11_11_11_11_11_11_10_10_10_10_11_10,
0b00_10_11_11_11_11_11_11_11_10_10_10_10_11_11_10,
0b00_10_10_11_11_11_11_11_10_10_10_10_11_11_11_10,
0b00_10_10_10_11_11_11_10_10_10_10_11_11_11_11_10,
0b00_10_10_10_10_11_10_10_10_10_11_11_11_11_11_10];
let board0org: [__m512i; 2] = [
_mm512_loadu_epi32(&pos.bitboard[coloridx][0][0]),
_mm512_loadu_epi32(&pos.bitboard[coloridx][1][0]),
];
let board1org: [__m512i; 2] = [
_mm512_loadu_epi32(&pos.bitboard[emptyidx][0][0]),
_mm512_loadu_epi32(&pos.bitboard[emptyidx][1][0]),
];
let mut count_match: i32 = 0;
for pattern in 0..5 {
for dir in 0..2 {
let mut board0 = board0org[dir];
let mut board1 = board1org[dir];
let boardf1 = _mm512_and_si512(answer_color[pattern], board0);
let boardf2 = _mm512_and_si512(answer_empty[pattern], board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[0], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
for i in 1..11 {
board0 = _mm512_slli_epi32(board0, 1);
board1 = _mm512_slli_epi32(board1, 1);
let boardf1 = _mm512_and_si512(answer_color[pattern], board0);
let boardf2 = _mm512_and_si512(answer_empty[pattern], board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[i], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
}
}
}
count_match
}
#[target_feature(enable = "avx512f,avx512bw")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
unsafe fn check_patternlive3_avx512(pos: &Pos, sd: Side) -> i32 {
let coloridx = sd as usize;
let emptyidx = Color::Empty as usize;
#[rustfmt::skip]
let board0org: [__m512i; 2] = [_mm512_loadu_epi32(&pos.bitboard[coloridx][0][0]), _mm512_loadu_epi32(&pos.bitboard[coloridx][1][0])];
#[rustfmt::skip]
let board1org: [__m512i; 2] = [_mm512_loadu_epi32(&pos.bitboard[emptyidx][0][0]), _mm512_loadu_epi32(&pos.bitboard[emptyidx][1][0])];
#[rustfmt::skip]
let answer_color: [__m512i; 1] = [_mm512_set1_epi16( (1<<14)|(1<<13)|(1<<12) )];
#[rustfmt::skip]
let answer_empty: [__m512i; 1] = [_mm512_set1_epi16( (1<<15)| (1<<11) )];
#[rustfmt::skip]
let answer: __m512i = _mm512_set1_epi16( (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11) );
let mut count_match: i32 = 0;
#[rustfmt::skip]
let answer_mask: [__mmask32; 11] = [0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_11,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_10_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_10_10_10_10_10,
0b00_11_11_11_11_11_11_11_11_11_10_10_10_10_11_10,
0b00_10_11_11_11_11_11_11_11_10_10_10_10_11_11_10,
0b00_10_10_11_11_11_11_11_10_10_10_10_11_11_11_10,
0b00_10_10_10_11_11_11_10_10_10_10_11_11_11_11_10,
0b00_10_10_10_10_11_10_10_10_10_11_11_11_11_11_10];
for pattern in 0..1 {
for dir in 0..2 {
let mut board0 = board0org[dir];
let mut board1 = board1org[dir];
let boardf1 = _mm512_and_si512(answer_color[pattern], board0);
let boardf2 = _mm512_and_si512(answer_empty[pattern], board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[0], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
for i in 1..11 {
board0 = _mm512_slli_epi32(board0, 1);
board1 = _mm512_slli_epi32(board1, 1);
let boardf1 = _mm512_and_si512(answer_color[pattern], board0);
let boardf2 = _mm512_and_si512(answer_empty[pattern], board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[i], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
}
}
}
#[rustfmt::skip]
let answer_color: [__m512i; 2] = [_mm512_set1_epi16( (1<<14)| (1<<12)|(1<<11) ),
_mm512_set1_epi16( (1<<14)|(1<<13) |(1<<11) )];
#[rustfmt::skip]
let answer_empty: [__m512i; 2] = [_mm512_set1_epi16( (1<<15)| (1<<13)| (1<<10) ),
_mm512_set1_epi16( (1<<15)| (1<<12)| (1<<10) )];
#[rustfmt::skip]
let answer: __m512i = _mm512_set1_epi16( (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(1<<10) );
#[rustfmt::skip]
let answer_mask: [__mmask32; 10] = [0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_11_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_11_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_11_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_11_10_10_10_10,
0b01_11_11_11_11_11_11_11_11_11_11_10_10_10_10_10,
0b00_11_11_11_11_11_11_11_11_11_10_10_10_10_10_10,
0b00_10_11_11_11_11_11_11_11_10_10_10_10_10_11_10,
0b00_10_10_11_11_11_11_11_10_10_10_10_10_11_11_10,
0b00_10_10_10_11_11_11_10_10_10_10_10_11_11_11_10,
0b00_10_10_10_10_11_10_10_10_10_10_11_11_11_11_10];
for pattern in 0..2 {
for dir in 0..2 {
let mut board0 = board0org[dir];
let mut board1 = board1org[dir];
let boardf1 = _mm512_and_si512(answer_color[pattern], board0);
let boardf2 = _mm512_and_si512(answer_empty[pattern], board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[0], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
for i in 1..10 {
board0 = _mm512_slli_epi32(board0, 1);
board1 = _mm512_slli_epi32(board1, 1);
let boardf1 = _mm512_and_si512(answer_color[pattern], board0);
let boardf2 = _mm512_and_si512(answer_empty[pattern], board1);
let boardf = _mm512_or_si512(boardf1, boardf2);
let temp_mask = _mm512_mask_cmpeq_epi16_mask(answer_mask[i], answer, boardf);
count_match += _popcnt32(temp_mask as i32);
}
}
}
count_match
}
fn main() {
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
{
if is_x86_feature_detected!("avx512bw") {
println!("\n\nThe program is running with avx512f and avx512bw intrinsics\n\n");
} else {
println!("\n\nThe program is running with NO intrinsics.\n\n");
}
}
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
{
println!("\n\nThe program is running with NO intrinsics.\n\n");
}
loop {
let start = Instant::now();
println!("Hello, this is Connect5 (Outer-Open Gomoku)!");
println!("Self-playing with search depth = 4");
let test_state: [Color; SQUARE_SIZE as usize] = [Color::Empty; SQUARE_SIZE as usize];
let test_bitboard: [[[i32; 16]; 2]; 3] = [[[0; 16]; 2]; 3];
let mut test1 = Pos {
state: test_state,
p_turn: Color::Black,
bitboard: test_bitboard,
};
test1.init();
let mut count: i32 = 0;
for i in 0..(FILE_SIZE * RANK_SIZE) {
let mut next_move: Move = square_make(1, 7); // set the first move is (1,7)
if i > 0 {
next_move = search(&test1, -EVAL_INF, EVAL_INF, 4, 0);
} // search depth = 4
test1.do_move(next_move);
pos_disp(&test1);
if pos_is_end(&test1) {
println!("Game over!!!!!! at Move {i}");
count = i + 1;
break;
}
}
let duration = start.elapsed();
println!(
"Average time for each move is: {:?}",
duration / count as u32
);
}
}
|
