TalkChess.com

[Steven Atkinson]

I'm new to crazyhouse, and I havent managed to sort out whether a pawn
promoted to queen, and then taken, is available as a spare queen.

And in this game between TJChess and Sjeng, xboard adjudicates an illegal move when Sjeng
tries to play a queen he had just taken (via a TJChess promoted pawn).

Is Xboard or Sjeng at fault ?

[Event "Computer Chess Game"]
[Site "localhost.localdomain"]
[Date "2012.03.23"]
[Round "-"]
[White "TJchess 1.1"]
[Black "Sjeng 11.2"]
[Result "1-0"]
[TimeControl "40/300"]
[Variant "crazyhouse"]
[Annotator "1. +0.07 1... +0.00"]

1. Nf3 {+0.07/13} e6 {+0.00/10 6} 2. e3 {+0.09/12 4} Nf6 {+0.44/10 7} 3.
Nc3 {+0.07/13 2.3} Rg8 {-0.22/9 7} 4. Ng5 {+0.45/12 3} h6 {-0.49/9 6} 5.
Nf3 {+0.23/12 4} Nc6 {+0.11/9 7} 6. Bb5 {+0.36/13 6} Na5 {-0.07/9 7} 7. O-O
{+0.59/13 5} Bb4 {-0.58/10 13} 8. d4 {+0.61/12 10} c6 {-0.90/10 6} 9. Bd3
{+0.92/12 5} Bxc3 {-1.00/9 6} 10. bxc3 {+1.12/12 4} Nd5 {-1.48/8 6} 11. c4
{+1.46/12 7} Nf6 {-1.89/9 7} 12. Ba3 {+2.16/12 6} d6 {-2.00/8 7} 13. B@b4
{+2.44/12 5} N@e4 {-2.00/9 5} 14. Nd2 {+2.34/12 2.0} Nxd2 {-1.77/10 6} 15.
Qxd2 {+2.12/12 2.2} Nxc4 {-2.05/9 8} 16. Bxc4 {+2.17/12 2.6} P@h3
{-1.28/8 7} 17. f3 {+2.17/12 11} hxg2 {-1.23/9 7} 18. Qxg2 {+2.13/11 7}
N@f5 {-1.54/8 6} 19. P@f2 {+2.13/11 6} a5 {-1.49/8 5} 20. Bxd6
{+3.49/11 2.1} Nxd6 {-1.62/9 8} 21. Bxd6 {+4.49/12 7} Qxd6 {-4.11/9 7} 22.
P@e5 {+5.08/12 16} Qc7 {-4.40/8 7} 23. N@d6+ {+4.73/11 1.7} Kd8 {-4.92/8 6}
24. Nxc8 {+5.68/11 9} Rxc8 {-5.03/8 6} 25. exf6 {+5.75/11 13} B@d6
{-5.83/7 6} 26. fxg7 {+5.91/10 24} N@d2 {-6.21/7 6} 27. P@h7 {+7.41/9 4}
Bxh2+ {-6.60/7 5} 28. Kh1 {+9.23/10 13} Re8 {-8.95/8 8} 29. g8=Q
{+10.85/10 6} Nxf1 {-9.22/6 7} 30. Qxe8+ {+199.89/7 9} Kxe8 31. N@g7+
{+199.91/7 16} Kf8 {-9999.91/5 7} 32. R@h8+ {+199.93/7 2.1}
{Xboard: Forfeit due to invalid move: q@g8 (_1_1) res=24} 1-0