r2qkbn1/p5pr/2pp1p2/1pnNpb2/2PPN2P/1P2Q3/P2BPPBP/R3K2R w q - 1 18
FEN state: r2qkbn1/p5pr/2pp1p2/1pnNpb2/2PPN2P/1P2Q3/P2BPPBP/R3K2R w q - 1 18 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at g7 and black rook at h7. Black pawn at c6, black pawn at d6 and black pawn at f6. Black pawn at b5, black knight at c5, white knight at d5, black pawn at e5 and black bishop at f5. White pawn at c4, white pawn at d4, white knight at e4 and white pawn at h4. White pawn at b3 and white queen at e3. White pawn at a2, white bishop at d2, white pawn at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white king at e1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 18. White to move.