r1b1kb1r/p1pn1pp1/1p6/1q1pp3/4Pn1p/P2P2PP/1PP2P1R/RNB1K1N1 w Qkq - 0 18
FEN state: r1b1kb1r/p1pn1pp1/1p6/1q1pp3/4Pn1p/P2P2PP/1PP2P1R/RNB1K1N1 w Qkq - 0 18 ; Best move: g3f4
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 c7, black knight at d7, black pawn at f7 and black pawn at g7. Black pawn at b6. Black queen at b5, black pawn at d5 and black pawn at e5. White pawn at e4, black knight at f4 and black pawn at h4. White pawn at a3, white pawn at d3, white pawn at g3 and white pawn at h3. White pawn at b2, white pawn at c2, white pawn at f2 and white rook at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white knight at g1. White queenside, black kingside and black queenside castles are available. Half move number is 0. Full move number is 18. White to move.