r1b2br1/pp1pk1pp/n6n/N3ppqP/1Pp1P3/6P1/P1PP1P1R/R1BQKBN1 w Q - 1 10
FEN state: r1b2br1/pp1pk1pp/n6n/N3ppqP/1Pp1P3/6P1/P1PP1P1R/R1BQKBN1 w Q - 1 10 ; Best move: d2d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black king at e7, black pawn at g7 and black pawn at h7. Black knight at a6 and black knight at h6. White knight at a5, black pawn at e5, black pawn at f5, black queen at g5 and white pawn at h5. White pawn at b4, black pawn at c4 and white pawn at e4. White pawn at g3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at f2 and white rook at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 10. White to move.