r1b1kb1r/p3p1p1/1ppp1p1n/2n2q2/1PP3pP/PN3P2/1B1P4/RN1QK2R w kq - 5 18
FEN state: r1b1kb1r/p3p1p1/1ppp1p1n/2n2q2/1PP3pP/PN3P2/1B1P4/RN1QK2R w kq - 5 18 ; Best move: b3c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at e7 and black pawn at g7. Black pawn at b6, black pawn at c6, black pawn at d6, black pawn at f6 and black knight at h6. Black knight at c5 and black queen at f5. White pawn at b4, white pawn at c4, black pawn at g4 and white pawn at h4. White pawn at a3, white knight at b3 and white pawn at f3. White bishop at b2 and white pawn at d2. White rook at a1, white knight at b1, white queen at d1, white king at e1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 5. Full move number is 18. White to move.