1rq2b1r/1p1n1k1p/1p3p2/4pPp1/P1p1PP2/2Pp3P/3NP3/R1BQKRNB b Q - 0 18
FEN state: 1rq2b1r/1p1n1k1p/1p3p2/4pPp1/P1p1PP2/2Pp3P/3NP3/R1BQKRNB b Q - 0 18 ; Best move: g5f4
The current state of the chess board is: Black rook at b8, black queen at c8, black bishop at f8 and black rook at h8. Black pawn at b7, black knight at d7, black king at f7 and black pawn at h7. Black pawn at b6 and black pawn at f6. Black pawn at e5, white pawn at f5 and black pawn at g5. White pawn at a4, black pawn at c4, white pawn at e4 and white pawn at f4. White pawn at c3, black pawn at d3 and white pawn at h3. White knight at d2 and white pawn at e2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white rook at f1, white knight at g1 and white bishop at h1. White queenside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.