4kb2/4n1pr/rp1p1pP1/1bpP1q1p/1B2pN1P/P4N2/1PP1PP2/R3KB1R b Q - 1 21
FEN state: 4kb2/4n1pr/rp1p1pP1/1bpP1q1p/1B2pN1P/P4N2/1PP1PP2/R3KB1R b Q - 1 21 ; Best move: e7g6
The current state of the chess board is: Black king at e8 and black bishop at f8. Black knight at e7, black pawn at g7 and black rook at h7. Black rook at a6, black pawn at b6, black pawn at d6, black pawn at f6 and white pawn at g6. Black bishop at b5, black pawn at c5, white pawn at d5, black queen at f5 and black pawn at h5. White bishop at b4, black pawn at e4, white knight at f4 and white pawn at h4. White pawn at a3 and white knight at f3. White pawn at b2, white pawn at c2, white pawn at e2 and white pawn at f2. White rook at a1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 1. Full move number is 21. Black to move.