r1b2bnr/p2pk1p1/1pn4p/q1p1p3/PPP4P/1QBPp3/3N1PPN/R3KBR1 b Q - 1 17
FEN state: r1b2bnr/p2pk1p1/1pn4p/q1p1p3/PPP4P/1QBPp3/3N1PPN/R3KBR1 b Q - 1 17 ; Best move: c5b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at d7, black king at e7 and black pawn at g7. Black pawn at b6, black knight at c6 and black pawn at h6. Black queen at a5, black pawn at c5 and black pawn at e5. White pawn at a4, white pawn at b4, white pawn at c4 and white pawn at h4. White queen at b3, white bishop at c3, white pawn at d3 and black pawn at e3. White knight at d2, white pawn at f2, white pawn at g2 and white knight at h2. White rook at a1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 17. Black to move.