1n1qk3/rb3pp1/p1Pp1b2/1p1np2r/2P2PPp/NP3N1B/P1Q1P2P/R1B1K2R b K - 3 18
FEN state: 1n1qk3/rb3pp1/p1Pp1b2/1p1np2r/2P2PPp/NP3N1B/P1Q1P2P/R1B1K2R b K - 3 18 ; Best move: d5b4
The current state of the chess board is: Black knight at b8, black queen at d8 and black king at e8. Black rook at a7, black bishop at b7, black pawn at f7 and black pawn at g7. Black pawn at a6, white pawn at c6, black pawn at d6 and black bishop at f6. Black pawn at b5, black knight at d5, black pawn at e5 and black rook at h5. White pawn at c4, white pawn at f4, white pawn at g4 and black pawn at h4. White knight at a3, white pawn at b3, white knight at f3 and white bishop at h3. White pawn at a2, white queen at c2, white pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 3. Full move number is 18. Black to move.