2rqkb1r/p3pppp/b1pp1n2/1p3P2/1n2P3/P4K1N/RPPP2PP/1NB1QB1R w k - 0 13
FEN state: 2rqkb1r/p3pppp/b1pp1n2/1p3P2/1n2P3/P4K1N/RPPP2PP/1NB1QB1R w k - 0 13 ; Best move: a3b4
The current state of the chess board is: Black rook at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black bishop at a6, black pawn at c6, black pawn at d6 and black knight at f6. Black pawn at b5 and white pawn at f5. Black knight at b4 and white pawn at e4. White pawn at a3, white king at f3 and white knight at h3. White rook at a2, white pawn at b2, white pawn at c2, white pawn at d2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at e1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 13. White to move.