rn3knr/3bp2p/1qp4P/pp1p1pP1/1PP5/P4R2/1bNP2P1/RNBQKB2 b Q - 3 16
FEN state: rn3knr/3bp2p/1qp4P/pp1p1pP1/1PP5/P4R2/1bNP2P1/RNBQKB2 b Q - 3 16 ; Best move: b2a1
The current state of the chess board is: Black rook at a8, black knight at b8, black king at f8, black knight at g8 and black rook at h8. Black bishop at d7, black pawn at e7 and black pawn at h7. Black queen at b6, black pawn at c6 and white pawn at h6. Black pawn at a5, black pawn at b5, black pawn at d5, black pawn at f5 and white pawn at g5. White pawn at b4 and white pawn at c4. White pawn at a3 and white rook at f3. Black bishop at b2, white knight at c2, white pawn at d2 and white pawn at g2. White rook at a1, white knight at b1, 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 16. Black to move.