1r3k1r/pp2ppb1/2n3pn/q1pp1bPp/P6P/1P1PPN2/2PB1P1R/RN1QK2B b Q - 6 17
FEN state: 1r3k1r/pp2ppb1/2n3pn/q1pp1bPp/P6P/1P1PPN2/2PB1P1R/RN1QK2B b Q - 6 17 ; Best move: a5c7
The current state of the chess board is: Black rook at b8, black king at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7, black pawn at f7 and black bishop at g7. Black knight at c6, black pawn at g6 and black knight at h6. Black queen at a5, black pawn at c5, black pawn at d5, black bishop at f5, white pawn at g5 and black pawn at h5. White pawn at a4 and white pawn at h4. White pawn at b3, white pawn at d3, white pawn at e3 and white knight at f3. White pawn at c2, white bishop at d2, white pawn at f2 and white rook at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1 and white bishop at h1. White queenside is the only castle move available. Half move number is 6. Full move number is 17. Black to move.