br4kr/P1npqpbp/2p5/1p2pn2/4P1PP/N1P5/P2P1PR1/R1BQKB2 b Q - 3 23
FEN state: br4kr/P1npqpbp/2p5/1p2pn2/4P1PP/N1P5/P2P1PR1/R1BQKB2 b Q - 3 23 ; Best move: b8b7
The current state of the chess board is: Black bishop at a8, black rook at b8, black king at g8 and black rook at h8. White pawn at a7, black knight at c7, black pawn at d7, black queen at e7, black pawn at f7, black bishop at g7 and black pawn at h7. Black pawn at c6. Black pawn at b5, black pawn at e5 and black knight at f5. White pawn at e4, white pawn at g4 and white pawn at h4. White knight at a3 and white pawn at c3. White pawn at a2, white pawn at d2, white pawn at f2 and white rook at g2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 3. Full move number is 23. Black to move.