2r1kb1r/p1n1pp1n/3p2Q1/qpp2bpp/P1P1N1PP/1K1P3N/1P2BP2/R1B4R b k - 5 18
FEN state: 2r1kb1r/p1n1pp1n/3p2Q1/qpp2bpp/P1P1N1PP/1K1P3N/1P2BP2/R1B4R b k - 5 18 ; Best move: b5c4
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black knight at c7, black pawn at e7, black pawn at f7 and black knight at h7. Black pawn at d6 and white queen at g6. Black queen at a5, black pawn at b5, black pawn at c5, black bishop at f5, black pawn at g5 and black pawn at h5. White pawn at a4, white pawn at c4, white knight at e4, white pawn at g4 and white pawn at h4. White king at b3, white pawn at d3 and white knight at h3. White pawn at b2, white bishop at e2 and white pawn at f2. White rook at a1, white bishop at c1 and white rook at h1. Black kingside is the only castle move available. Half move number is 5. Full move number is 18. Black to move.