r1bqkr2/pppp1p1p/3n1n2/4B1p1/3P4/b1NQ1P1N/1PP1P1PP/2KR1B1R b q - 1 10
FEN state: r1bqkr2/pppp1p1p/3n1n2/4B1p1/3P4/b1NQ1P1N/1PP1P1PP/2KR1B1R b q - 1 10 ; Best move: a3b2
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at f8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black knight at d6 and black knight at f6. White bishop at e5 and black pawn at g5. White pawn at d4. Black bishop at a3, white knight at c3, white queen at d3, white pawn at f3 and white knight at h3. White pawn at b2, white pawn at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White king at c1, white rook at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 10. Black to move.