rnbqk1n1/6pr/p2b4/2pp1p1p/p1P2P1P/3K1QP1/1PNP2BR/1RB3N1 w q - 1 18
FEN state: rnbqk1n1/6pr/p2b4/2pp1p1p/p1P2P1P/3K1QP1/1PNP2BR/1RB3N1 w q - 1 18 ; Best move: f3d5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black knight at g8. Black pawn at g7 and black rook at h7. Black pawn at a6 and black bishop at d6. Black pawn at c5, black pawn at d5, black pawn at f5 and black pawn at h5. Black pawn at a4, white pawn at c4, white pawn at f4 and white pawn at h4. White king at d3, white queen at f3 and white pawn at g3. White pawn at b2, white knight at c2, white pawn at d2, white bishop at g2 and white rook at h2. White rook at b1, white bishop at c1 and white knight at g1. Black queenside is the only castle move available. Half move number is 1. Full move number is 18. White to move.