1r2k1r1/pp4pp/q1b1p3/2bppP2/1P2P2P/1n1p4/P1P2PB1/RNBQKR2 b Q - 4 22
FEN state: 1r2k1r1/pp4pp/q1b1p3/2bppP2/1P2P2P/1n1p4/P1P2PB1/RNBQKR2 b Q - 4 22 ; Best move: b3a1
The current state of the chess board is: Black rook at b8, black king at e8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at g7 and black pawn at h7. Black queen at a6, black bishop at c6 and black pawn at e6. Black bishop at c5, black pawn at d5, black pawn at e5 and white pawn at f5. White pawn at b4, white pawn at e4 and white pawn at h4. Black knight at b3 and black pawn at d3. White pawn at a2, white pawn at c2, white pawn at f2 and white bishop at g2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 4. Full move number is 22. Black to move.