rnbkBb1r/1p6/2p5/p1n1p1pp/P1P1NpPP/1P2B3/5P2/R3KRN1 b Q - 0 23
FEN state: rnbkBb1r/1p6/2p5/p1n1p1pp/P1P1NpPP/1P2B3/5P2/R3KRN1 b Q - 0 23 ; Best move: c5e4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8, white bishop at e8, black bishop at f8 and black rook at h8. Black pawn at b7. Black pawn at c6. Black pawn at a5, black knight at c5, black pawn at e5, black pawn at g5 and black pawn at h5. White pawn at a4, white pawn at c4, white knight at e4, black pawn at f4, white pawn at g4 and white pawn at h4. White pawn at b3 and white bishop at e3. White pawn at f2. White rook at a1, white king at e1, white rook at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 23. Black to move.