r3kbr1/ppn2p1p/4b1p1/nNp2p2/2Pp3P/5KPR/PP1PP3/R1B1QB2 w q - 2 18
FEN state: r3kbr1/ppn2p1p/4b1p1/nNp2p2/2Pp3P/5KPR/PP1PP3/R1B1QB2 w q - 2 18 ; Best move: b5c7
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black knight at c7, black pawn at f7 and black pawn at h7. Black bishop at e6 and black pawn at g6. Black knight at a5, white knight at b5, black pawn at c5 and black pawn at f5. White pawn at c4, black pawn at d4 and white pawn at h4. White king at f3, white pawn at g3 and white rook at h3. White pawn at a2, white pawn at b2, white pawn at d2 and white pawn at e2. White rook at a1, white bishop at c1, white queen at e1 and white bishop at f1. Black queenside is the only castle move available. Half move number is 2. Full move number is 18. White to move.