### Re: Engines playing Musketeer Chess, good price

Posted:

**Wed Jan 15, 2020 3:32 am**I fixed perft(3) for the hard position but i still can't get perft(4).

Here is an example where mine differs from you. Can you do a breakdown of perft(3) for this postion ?

Stockfish also seems to have a proplem with the third position. Atleast you and I agree on perft(3) there.

I may have made a mistake on how to setup stockfish for the position though.

Here is an example where mine differs from you. Can you do a breakdown of perft(3) for this postion ?

Code: Select all

```
perf(3) for position: c******l/r1b1kb1r/1p3ppp/p1N2n2/1B1q4/8/1N1p4/PP1P1PPP/R1BQK2R/C******L w KQkq - 1 13
a7b6 1143
b8c7 938
d6b6 1004
d6c7 697
d6b4 832
d6f4 841
g8g7 1000
g8g6 959
h8h7 1000
h8h6 979
a7a6 970
b8b7 960
e9d8 889
d6d7 899
d6d8 862
d6d9 800
d6d5 954
d6e6 137
d6f6 882
d6g6 931
d6h6 870
d6c6 929
d6e7 115
d6e5 151
d6c5 919
a9a8 980
a9b9 979
h9g9 958
c9d8 1199
c9e7 1032
c9f6 1002
c9g5 1040
c9h4 989
f9e8 1098
f9d7 1104
f9c6 1029
f9b5 1113
f9a4 1018
f7d8 1044
f7h6 928
f7g9 950
f7e5 1057
f7g5 946
nodes 39127
```

I may have made a mistake on how to setup stockfish for the position though.

Code: Select all

```
position fen r1b1kb1r/1p3ppp/p1N2n2/1B1q4/8/1N1p4/PP1P1PPP/R1BQK2R[C-L-c-l-] w KQkq - 1 13
d
+---+---+---+---+---+---+---+---+
| r | | b | | k | b | | r |
+---+---+---+---+---+---+---+---+
| | p | | | | p | p | p |
+---+---+---+---+---+---+---+---+
| p | | N | | | n | | |
+---+---+---+---+---+---+---+---+
| | B | | q | | | | |
+---+---+---+---+---+---+---+---+
| | | | | | | | |
+---+---+---+---+---+---+---+---+
| | N | | p | | | | |
+---+---+---+---+---+---+---+---+
| P | P | | P | | P | P | P |
+---+---+---+---+---+---+---+---+
| R | | B | Q | K | | | R |
+---+---+---+---+---+---+---+---+
Fen: r1b1kb1r/1p3ppp/p1N2n2/1B1q4/8/1N1p4/PP1P1PPP/R1BQK2R[C-L-c-l-] w KQkq - 1 13
Key: 1359BBB9217C0D38
Checkers:
go perft 2
a2a3: 44
f2f3: 43
g2g3: 45
h2h3: 44
a2a4: 44
f2f4: 44
g2g4: 44
h2h4: 44
c6b4: 8
c6d4: 8
c6a5: 8
c6e5: 8
c6a7: 8
c6e7: 8
c6b8: 8
c6d8: 8
b3d4: 45
b3a5: 44
b3c5: 41
b5d3: 46
b5a4: 45
b5c4: 44
b5a6: 46
a1b1: 44
h1f1: 44
h1g1: 44
d1c2: 45
d1e2: 8
d1f3: 43
d1g4: 42
d1h5: 43
e1f1: 44
e1g1: 44
Nodes searched: 1128
go perft 3
a2a3: 1326
f2f3: 1177
g2g3: 1281
h2h3: 1328
a2a4: 1328
f2f4: 1318
g2g4: 1182
h2h4: 1366
c6b4: 245
c6d4: 247
c6a5: 221
c6e5: 269
c6a7: 223
c6e7: 247
c6b8: 229
c6d8: 233
b3d4: 1611
b3a5: 1448
b3c5: 1558
b5d3: 1718
b5a4: 1200
b5c4: 1353
b5a6: 1387
a1b1: 1364
h1f1: 1241
h1g1: 1285
d1c2: 1441
d1e2: 283
d1f3: 1575
d1g4: 1787
d1h5: 1659
e1f1: 1383
e1g1: 1338
Nodes searched: 35851
go perft 4
a2a3: 45547
f2f3: 39037
g2g3: 44017
h2h3: 45614
a2a4: 45537
f2f4: 44908
g2g4: 39259
h2h4: 47194
c6b4: 8694
c6d4: 8932
c6a5: 7817
c6e5: 9513
c6a7: 7971
c6e7: 8432
c6b8: 8230
c6d8: 8486
b3d4: 59020
b3a5: 51551
b3c5: 52811
b5d3: 75256
b5a4: 39874
b5c4: 55818
b5a6: 61001
a1b1: 47231
h1f1: 41864
h1g1: 43760
d1c2: 52389
d1e2: 8475
d1f3: 52267
d1g4: 58895
d1h5: 55824
e1f1: 46250
e1g1: 42912
Nodes searched: 1264386
```