1n1k1r2/4p1bp/2p3p1/8/rN2PP2/7P/PP1PB2R/RNB1K3 b Q - 0 23
FEN state: 1n1k1r2/4p1bp/2p3p1/8/rN2PP2/7P/PP1PB2R/RNB1K3 b Q - 0 23 ; Best move: a4b4
The current state of the chess board is: Black knight at b8, black king at d8 and black rook at f8. Black pawn at e7, black bishop at g7 and black pawn at h7. Black pawn at c6 and black pawn at g6. Black rook at a4, white knight at b4, white pawn at e4 and white pawn at f4. White pawn at h3. White pawn at a2, white pawn at b2, white pawn at d2, white bishop at e2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 0. Full move number is 23. Black to move.