1nb1kb1r/2n1p2p/1r1p1pp1/1pp3P1/PpP4Q/3P1P1P/4P2K/1RB2BNR w - - 0 23
FEN state: 1nb1kb1r/2n1p2p/1r1p1pp1/1pp3P1/PpP4Q/3P1P1P/4P2K/1RB2BNR w - - 0 23 ; Best move: c4b5
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black knight at c7, black pawn at e7 and black pawn at h7. Black rook at b6, black pawn at d6, black pawn at f6 and black pawn at g6. Black pawn at b5, black pawn at c5 and white pawn at g5. White pawn at a4, black pawn at b4, white pawn at c4 and white queen at h4. White pawn at d3, white pawn at f3 and white pawn at h3. White pawn at e2 and white king at h2. White rook at b1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. White to move.