rn5r/2p3pp/1p1Bkp1n/1Q6/3pP3/1p1P1q2/P1P2PPP/2R1KB1R b K - 6 18
FEN state: rn5r/2p3pp/1p1Bkp1n/1Q6/3pP3/1p1P1q2/P1P2PPP/2R1KB1R b K - 6 18 ; Best move: f3g4
The current state of the chess board is: Black rook at a8, black knight at b8 and black rook at h8. Black pawn at c7, black pawn at g7 and black pawn at h7. Black pawn at b6, white bishop at d6, black king at e6, black pawn at f6 and black knight at h6. White queen at b5. Black pawn at d4 and white pawn at e4. Black pawn at b3, white pawn at d3 and black queen at f3. White pawn at a2, white pawn at c2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 6. Full move number is 18. Black to move.