r3k2r/1ppbppbp/5np1/p3n3/q1p1PPP1/2NP3N/6BP/R1BQK2R w KQ - 2 18
FEN state: r3k2r/1ppbppbp/5np1/p3n3/q1p1PPP1/2NP3N/6BP/R1BQK2R w KQ - 2 18 ; Best move: a1a4
The current state of the chess board is: Black rook at a8, black king at e8 and black rook at h8. Black pawn at b7, black pawn at c7, black bishop at d7, black pawn at e7, black pawn at f7, black bishop at g7 and black pawn at h7. Black knight at f6 and black pawn at g6. Black pawn at a5 and black knight at e5. Black queen at a4, black pawn at c4, white pawn at e4, white pawn at f4 and white pawn at g4. White knight at c3, white pawn at d3 and white knight at h3. White bishop at g2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 2. Full move number is 18. White to move.