2b1kb2/r1p1p1p1/1p3p1r/Q1nq1n2/p1pP1PPp/PP2P2P/4N2R/RNB1KB2 b Q - 2 21
FEN state: 2b1kb2/r1p1p1p1/1p3p1r/Q1nq1n2/p1pP1PPp/PP2P2P/4N2R/RNB1KB2 b Q - 2 21 ; Best move: c5d3
The current state of the chess board is: Black bishop at c8, black king at e8 and black bishop at f8. Black rook at a7, black pawn at c7, black pawn at e7 and black pawn at g7. Black pawn at b6, black pawn at f6 and black rook at h6. White queen at a5, black knight at c5, black queen at d5 and black knight at f5. Black pawn at a4, black pawn at c4, white pawn at d4, white pawn at f4, white pawn at g4 and black pawn at h4. White pawn at a3, white pawn at b3, white pawn at e3 and white pawn at h3. White knight at e2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 2. Full move number is 21. Black to move.