1n3bnr/4k2p/rppp4/pP4p1/2P1PpP1/P2P1B1N/1q2R3/RN1QK3 b Q - 1 20
FEN state: 1n3bnr/4k2p/rppp4/pP4p1/2P1PpP1/P2P1B1N/1q2R3/RN1QK3 b Q - 1 20 ; Best move: b2a1
The current state of the chess board is: Black knight at b8, black bishop at f8, black knight at g8 and black rook at h8. Black king at e7 and black pawn at h7. Black rook at a6, black pawn at b6, black pawn at c6 and black pawn at d6. Black pawn at a5, white pawn at b5 and black pawn at g5. White pawn at c4, white pawn at e4, black pawn at f4 and white pawn at g4. White pawn at a3, white pawn at d3, white bishop at f3 and white knight at h3. Black queen at b2 and white rook at e2. White rook at a1, white knight at b1, white queen at d1 and white king at e1. White queenside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.