Crazyhouse

[Ferdy]

Looking at some test games, I found this invalid move by Sjaak and Sunsetter 7g.

Code: Select all

[Event "Computer Chess Game"]
[Site "INTEL-PC"]
[Date "2015.05.02"]
[Round "45"]
[White "Imortal v1-16"]
[Black "SjaakII_v1.0_Zh"]
[Result "1-0"]
[TimeControl "40/60"]
[Variant "crazyhouse"]
[Annotator "2. +0.76   2... +0.06"]

1. e3 e5 2. Nc3 {+0.76/10 1.5} Nf6 {+0.06/10 0.9} 3. Qf3 {+0.87/10 1.3} d5
{+0.34/9 0.9} 4. Bb5+ {+0.53/8 1.5} c6 {+0.90/8 0.9} 5. Be2 {+0.13/8 1.5}
e4 {+1.07/10 1.1} 6. Qf4 {+0.25/9 1.5} Bd6 {+1.18/9 1.7} 7. Qg5
{-0.26/10 1.5} Kf8 {+1.27/9 0.9} 8. Qh4 {-0.17/9 1.5} Qe7 {+1.15/8 1.6} 9.
a3 {+0.05/8 1.5} h6 {+1.20/7 1.1} 10. f4 {+0.31/9 1.5} exf3 {+1.12/8 1.7}
11. Nxf3 {+0.24/8 1.5}
{Xboard: Forfeit due to invalid move: B@e4 (_1_1 via ^0) res=25} 1-0

Later part of the debug.

607154 >first : time 4680
607154 >first : otim 4912
book hit = (NULL)
607154 >first : e4f3
silence
607157 <first : # moves_to_go = 30
607157 <first : # rnb2k1r/pp2qpp1/2pb1n1p/3p4/7Q/P1N1Pp2/1PPPB1PP/R1B1K1NR[p] w KQ -
607157 <first : # TimeLeft=46800.00 ms. MaxTime=2340.00 ms AllocatedTime=1490.00 ms.
607157 <first : 1 50 0 71 g1f3
607157 <first : 2 2 0 432 g1f3 b8d7
607159 <first : 3 32 0 1190 g1f3
607160 <first : 3 34 0 1747 g1f3 b8d7 e1d1
607173 <first : 4 1 1 8229 g1f3 b8d7 e1d1 d7c5
607176 <first : 5 31 2 10135 g1f3
607184 <first : 5 25 3 18017 g1f3 P@f2 e1d1 f6e4 h4e7 d6e7 Q@c7 b8d7
607200 <first : 6 -5 4 30203 g1f3
607260 <first : 6 33 10 84128 g1f3 c8f5 f3d4 P@g5 d4f5 g5h4 f5e7 d6e7
607839 <first : 7 -4 68 402170 g1f3 b8d7 P@f2 d7c5 b2b4 c5e4 c1b2
608615 <first : 8 24 146 821387 g1f3 b8d7 P@f4 f6e4 c3e4 d5e4 N@f5 e4f3 f5e7 d6e7
608615 <first : move g1f3
608615 >second: time 4912
608615 >second: otim 4534
book hit = (NULL)
608615 >second: g1f3
silence
608624 <second: 2 320 0 880 12. ... Be6 12. d3
608635 <second: 3 337 1 1767 12. ... Bf5 12. d3 Nd7
608710 <second: 4 311 9 10484 12. ... Bf5 12. d3 Nd7 13. Qd4
608760 <second: 5 321 14 17907 12. ... Bf5 12. Nd4 Be4 13. Nxe4 dxe4
609124 <second: 6 312 50 73778 12. ... Ne4 12. Qxe7 Bxe7 13. Nxe4 dxe4 14. Nd4 Bd6
610369 <second: 7 328 174 230581 12. ... B@e4 12. P@d3 Bxf3 13. Bxf3 Bf5 14. Qd4 Nd7
610369 <second: move B@e4
LegalDrop: 46 @ 6,3)
Impossible move B@e4, type = 25
GameEnds(26, Xboard: Forfeit due to invalid move: B@e4 (_1_1 via ^0) res=25, 4)
610376 >first : result 1-0 {Xboard: Forfeit due to invalid move: B@e4 (_1_1 via ^0) res=25}
610376 >second: result 1-0 {Xboard: Forfeit due to invalid move: B@e4 (_1_1 via ^0) res=25}

Also this.

Code: Select all

[Event "Computer Chess Game"]
[Site "INTEL-PC"]
[Date "2015.05.02"]
[Round "70"]
[White "SjaakII_v1.0_Zh"]
[Black "Imortal v1-16"]
[Result "0-1"]
[TimeControl "40/60"]
[Variant "crazyhouse"]
[Annotator "3. +0.17   2... -0.20"]

1. e3 Nf6 2. Nf3 h6 {-0.20/10 1.5} 3. d4 {+0.17/10 0.9} d6 {+0.23/10 1.4}
4. Nc3 {+0.24/10 1.0} Be6 {-0.08/10 1.5} 5. d5 {+0.60/10 1.1} Bg4
{+0.16/10 1.5} 6. h3 {+0.81/9 1.0} Bh5 {+0.21/9 1.5} 7. Qd4 {+0.66/8 1.3}
Bxf3 {+0.46/9 1.2} 8. gxf3 {+0.68/9 1.4} Qd7 {+0.29/8 1.5} 9. e4
{+0.85/8 1.9} c5 {+0.27/8 1.2} 10. dxc6 {+2.35/8 0.9} Nxc6 {+0.30/7 1.5}
11. Qd1 {+2.24/9 1.7} Ne5 {+0.47/6 1.5} 12. f4 {+2.60/8 1.4} Nc6
{+0.75/7 1.4} 13. B@d5 {+2.55/8 1.8} P@b4 {+0.34/6 1.5} 14. Nb5
{+2.92/7 2.4} a6 {+1.07/6 1.5} 15. Bxc6 {+6.10/8 1.5} Qxc6 {+1.07/5 1.5}
16. N@c7+ {+6.10/7 0.9} Kd8 {-1.25/7 1.5}
{Xboard: Forfeit due to invalid move: B@d5 (_1_1 via ^0) res=25} 0-1

Run under winboard 4.8.0b.

Code: Select all

"SjaakII_v1.0_Zh" -fcp "SjaakII_win64_DC.exe" -fd "C:\Chess\engines\nobook\sjaakii-1.0.0-win\SjaakII" -fn "SjaakII_v1.0_Zh" -variant crazyhouse

From sunsetter.

Code: Select all

[Event "Computer Chess Game"]
[Site "INTEL-PC"]
[Date "2015.05.02"]
[Round "283"]
[White "sunsetter_7g"]
[Black "Imortal v1.0"]
[Result "0-1"]
[TimeControl "180+1"]
[Variant "crazyhouse"]
[Annotator "2. +0.00   1... -0.10"]

1. e3 Nf6 {-0.10/15 29} 2. Nf3 {+0.00/14 9} Nc6 {-0.09/15 49} 3. Bb5
{+0.04/14 14} e6 {+0.00/13 44} 4. d4 {+0.10/14 20} Bd6 {+0.19/11 47} 5. Nc3
{+0.15/14 31} Bb4 {+0.07/11 29} 6. Bd2 {+0.13/14 19} Bxc3 {+0.22/13 42} 7.
Bxc3 {+0.23/15 1:06} N@e4 {+0.38/12 47} 8. O-O {+0.24/14 16} Nxc3
{+0.82/12 34} 9. bxc3 {+0.39/14 41} B@b2 {+0.37/10 33} 10. c4 {+0.51/13 19}
Bxa1 {+0.42/12 27} 11. Qxa1 {+0.51/14 51} R@g6 {+0.46/9 27} 12. c5
{+0.81/11 16} a6 {+0.72/10 26} 13. Bc4 {+0.82/12 25} d5 {+0.76/10 32} 14.
cxd6 {+0.77/13 47} cxd6 {+1.07/9 33} 15. P@g3 {+0.73/12 33} b5 {+1.50/9 21}
16. Be2 {+0.77/12 16} Bb7 {+1.21/9 33} 17. B@f4 {+0.81/12 28} Nd5
{+1.63/10 29} 18. Bxd6 {+1.26/12 35} Qxd6 {+0.25/10 31} 19. B@c5 Qb8
{+0.09/8 9} 20. N@d6+ {+0.09/10 2.2} Kf8 {-0.56/9 9} 21. P@h5
{+0.18/10 2.3} Rf6 {-0.04/9 7} 22. Nxb7+ {+0.16/11 2.2} P@e7 {-0.53/8 7}
23. e4 {+0.26/12 2.2} Qxb7 {-1.07/8 7} 24. exd5 {+0.45/11 2.2} exd5
{-0.88/9 7} 25. B@h4 {+0.32/10 2.2} Re6 {-0.14/8 5} 26. Re1 {+0.16/10 4}
B@a5 {+1.95/6 5} 27. N@f4 {+0.71/10 2.1} Re4 {+2.35/7 5} 28. Nxd5
{+0.73/10 2.1} P@b2 {+2.97/7 5} 29. Nxe7 {+1.32/10 2.1} bxa1=Q {+2.63/7 5}
30. Nxc6+ {+1.48/10 2.1} Kg8 {+5.13/7 5} 31. Rxa1 {+0.90/10 4} Qxc6
{+5.95/7 5}
{Xboard: Forfeit due to invalid move: Q@g5 (_1_1 via ^0) res=25} 0-1

Code: Select all

[Event "Computer Chess Game"]
[Site "INTEL-PC"]
[Date "2015.05.02"]
[Round "181"]
[White "sunsetter_7g"]
[Black "Imortal v1-15"]
[Result "0-1"]
[TimeControl "180+1"]
[Variant "crazyhouse"]
[Annotator "3. +0.56   2... -0.29"]

1. d4 d5 2. Nc3 Qd6 {-0.29/12 9} 3. e4 {+0.56/12 2.2} dxe4 {+0.30/12 7} 4.
Nxe4 {+0.58/11 2.3} Qe6 {+0.00/10 8} 5. P@e5 {+0.80/11 2.3} Nc6 {+0.32/9 8}
6. Bb5 {+0.87/11 2.2} Qd5 {+0.43/9 7} 7. Bxc6+ {+0.69/10 2.2} Qxc6
{+1.45/9 7} 8. d5 {+0.74/11 2.2} Qg6 {+2.20/7 5} 9. Ng5 {+0.69/10 2.2}
B@a5+ {+0.26/7 5} 10. c3 {+0.69/10 2.2} Bxc3+ {+0.60/9 4} 11. bxc3
{+1.66/10 2.2} P@b2 {+0.37/8 6} 12. B@a4+ {+0.74/10 4} P@d7 {+0.99/9 6} 13.
Bc2 {+0.56/11 2.1} bxa1=Q {+4.00/9 6} 14. Bxg6 {+1.23/10 2.1} Qxc3+
{+4.26/6 4} 15. Kf1 {+1.08/10 2.1} hxg6 {+3.40/7 4} 16. Nxf7 {-0.04/10 8}
R@e1+ {+3.76/5 4} 17. Qxe1 Qxe1+ {+3.49/5 4} 18. Kxe1 B@a5+ {+3.14/4 4} 19.
P@d2 {+5.95/10 16} Q@e4+ {-6.72/5 4} 20. R@e2 {+7.57/9 1.8} Qxg2
{-3.48/6 4} 21. Q@d8+ {+299.80/33} Kxf7 {+7.80/2}
{Xboard: Forfeit due to invalid move: Q@e8 (_1_1 via ^0) res=25} 0-1

[Henk]

Engines. They are all crap.

[Ferdy]

Engines. They are all crap.

Better design your engine to play crazyhouse, there is no point in developing a crappy engine to play normal chess .

[Evert]

Ah, nasty: when it makes a capture, SjaakII places the piece that used to be on the destination square in holdings. However, in the case of en-passant capture, this is wrong and it puts an arbitrary piece in holdings (actually the last piece to occupy that square, which was apparently a bishop in the search Sjaak performed; if I enter the moves by hand it's a queen).

Well spotted!

EDIT: another WTF is SjaakII's evaluation of that position, but that's a separate issue.

[hgm]

Such nasty details are the reason I never attempted to have Shokidoki play Crazyhouse.

[Evert]

Fixed now, so it'll be in the next release.

What's particularly silly about this is that I did remember to be careful about clearing the en-passant victim, but then grabbed the piece-ID from the wrong square to update the holdings (the two pieces of code were evidently not written at the same time).

[Evert]

Such nasty details are the reason I never attempted to have Shokidoki play Crazyhouse.

The fix was actually pretty easy, but of course it didn't show up when I set up a test position. I'm just glad it was a bug in make move (actually, move generation) rather than the search.

Of course I never noticed it because Crazyhouse was a bit of a "why not" after implementing Shogi, where as you say the problem simply doesn't exist.