B4bnr/2p1r1pp/3pbk2/p3ppq1/1p2P2P/1PP2QPR/P2P1P2/RNB1K3 b Q - 0 21
FEN state: B4bnr/2p1r1pp/3pbk2/p3ppq1/1p2P2P/1PP2QPR/P2P1P2/RNB1K3 b Q - 0 21 ; Best move: g5g4
The current state of the chess board is: White bishop at a8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at c7, black rook at e7, black pawn at g7 and black pawn at h7. Black pawn at d6, black bishop at e6 and black king at f6. Black pawn at a5, black pawn at e5, black pawn at f5 and black queen at g5. Black pawn at b4, white pawn at e4 and white pawn at h4. White pawn at b3, white pawn at c3, white queen at f3, white pawn at g3 and white rook at h3. White pawn at a2, white pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1 and white king at e1. White queenside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.