5b1r/rp1kp1p1/3pb2p/1Pp4P/q1N2p2/P1PP2P1/4P2n/R3KBNR b Q - 0 21
FEN state: 5b1r/rp1kp1p1/3pb2p/1Pp4P/q1N2p2/P1PP2P1/4P2n/R3KBNR b Q - 0 21 ; Best move: a4c2
The current state of the chess board is: Black bishop at f8 and black rook at h8. Black rook at a7, black pawn at b7, black king at d7, black pawn at e7 and black pawn at g7. Black pawn at d6, black bishop at e6 and black pawn at h6. White pawn at b5, black pawn at c5 and white pawn at h5. Black queen at a4, white knight at c4 and black pawn at f4. White pawn at a3, white pawn at c3, white pawn at d3 and white pawn at g3. White pawn at e2 and black knight at h2. White rook at a1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.