1rb1kbnr/pp2p2p/n4pp1/q2p4/1Pp2Q2/N1P1PP2/P2P2PP/R1B1K1NR w KQk - 1 13
FEN state: 1rb1kbnr/pp2p2p/n4pp1/q2p4/1Pp2Q2/N1P1PP2/P2P2PP/R1B1K1NR w KQk - 1 13 ; Best move: b4a5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at f6 and black pawn at g6. Black queen at a5 and black pawn at d5. White pawn at b4, black pawn at c4 and white queen at f4. White knight at a3, white pawn at c3, white pawn at e3 and white pawn at f3. White pawn at a2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside, white queenside and black kingside castles are available. Half move number is 1. Full move number is 13. White to move.