rq4n1/p1p1k1r1/2B3p1/np1bppPp/1P6/2P1P1P1/P2N1N1P/R1B1KR2 b Q - 6 21
FEN state: rq4n1/p1p1k1r1/2B3p1/np1bppPp/1P6/2P1P1P1/P2N1N1P/R1B1KR2 b Q - 6 21 ; Best move: a5c6
The current state of the chess board is: Black rook at a8, black queen at b8 and black knight at g8. Black pawn at a7, black pawn at c7, black king at e7 and black rook at g7. White bishop at c6 and black pawn at g6. Black knight at a5, black pawn at b5, black bishop at d5, black pawn at e5, black pawn at f5, white pawn at g5 and black pawn at h5. White pawn at b4. White pawn at c3, white pawn at e3 and white pawn at g3. White pawn at a2, white knight at d2, white knight at f2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 6. Full move number is 21. Black to move.