q3k2r/1r3ppp/2p5/1p3b1n/1B1pp1QP/1PP1P2N/P2P1PP1/RN2KB1R w KQk - 3 18
FEN state: q3k2r/1r3ppp/2p5/1p3b1n/1B1pp1QP/1PP1P2N/P2P1PP1/RN2KB1R w KQk - 3 18 ; Best move: g4f5
The current state of the chess board is: Black queen at a8, black king at e8 and black rook at h8. Black rook at b7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at c6. Black pawn at b5, black bishop at f5 and black knight at h5. White bishop at b4, black pawn at d4, black pawn at e4, white queen at g4 and white pawn at h4. White pawn at b3, white pawn at c3, white pawn at e3 and white knight at h3. White pawn at a2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white rook at h1. White kingside, white queenside and black kingside castles are available. Half move number is 3. Full move number is 18. White to move.