1r2kb2/pb4pr/n2p4/1pp1pp1P/NPP1nP1P/P1PQ4/4P1B1/1RB2KNR w - - 1 23
FEN state: 1r2kb2/pb4pr/n2p4/1pp1pp1P/NPP1nP1P/P1PQ4/4P1B1/1RB2KNR w - - 1 23 ; Best move: c4b5
The current state of the chess board is: Black rook at b8, black king at e8 and black bishop at f8. Black pawn at a7, black bishop at b7, black pawn at g7 and black rook at h7. Black knight at a6 and black pawn at d6. Black pawn at b5, black pawn at c5, black pawn at e5, black pawn at f5 and white pawn at h5. White knight at a4, white pawn at b4, white pawn at c4, black knight at e4, white pawn at f4 and white pawn at h4. White pawn at a3, white pawn at c3 and white queen at d3. White pawn at e2 and white bishop at g2. White rook at b1, white bishop at c1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 23. White to move.