r1bq1bnr/ppp2p2/2k3p1/3p1pPp/PN6/7B/1PPPP2P/1RBQK1NR b K - 0 10
FEN state: r1bq1bnr/ppp2p2/2k3p1/3p1pPp/PN6/7B/1PPPP2P/1RBQK1NR b K - 0 10 ; Best move: f8b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7 and black pawn at f7. Black king at c6 and black pawn at g6. Black pawn at d5, black pawn at f5, white pawn at g5 and black pawn at h5. White pawn at a4 and white knight at b4. White bishop at h3. White pawn at b2, white pawn at c2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, 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 10. Black to move.