r5nr/p2qpkbp/nppp1pp1/1b6/3P1PPP/PP2P3/2PB2B1/RNQ1K1NR w KQ - 5 17
FEN state: r5nr/p2qpkbp/nppp1pp1/1b6/3P1PPP/PP2P3/2PB2B1/RNQ1K1NR w KQ - 5 17 ; Best move: a3a4
The current state of the chess board is: Black rook at a8, black knight at g8 and black rook at h8. Black pawn at a7, black queen at d7, black pawn at e7, black king at f7, black bishop at g7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at c6, black pawn at d6, black pawn at f6 and black pawn at g6. Black bishop at b5. White pawn at d4, white pawn at f4, white pawn at g4 and white pawn at h4. White pawn at a3, white pawn at b3 and white pawn at e3. White pawn at c2, white bishop at d2 and white bishop at g2. White rook at a1, white knight at b1, white queen at c1, white king at e1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 5. Full move number is 17. White to move.