rnb2b1r/1p2n1k1/2N2q1p/P1ppB3/1Q3p1p/3P1PP1/P1P1PN1R/R3KB2 b Q - 2 18
FEN state: rnb2b1r/1p2n1k1/2N2q1p/P1ppB3/1Q3p1p/3P1PP1/P1P1PN1R/R3KB2 b Q - 2 18 ; Best move: c5b4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at b7, black knight at e7 and black king at g7. White knight at c6, black queen at f6 and black pawn at h6. White pawn at a5, black pawn at c5, black pawn at d5 and white bishop at e5. White queen at b4, black pawn at f4 and black pawn at h4. White pawn at d3, white pawn at f3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at e2, white knight at f2 and white rook at h2. White rook at a1, 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 18. Black to move.