rnb1qbnr/1p1kpp2/2p5/N2p2pp/4P3/3B1P2/PPPPQ1PP/1RB1K1NR b K - 0 9
FEN state: rnb1qbnr/1p1kpp2/2p5/N2p2pp/4P3/3B1P2/PPPPQ1PP/1RB1K1NR b K - 0 9 ; Best move: a8a5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black king at d7, black pawn at e7 and black pawn at f7. Black pawn at c6. White knight at a5, black pawn at d5, black pawn at g5 and black pawn at h5. White pawn at e4. White bishop at d3 and white pawn at f3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2, white queen at e2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 9. Black to move.