rnb2rk1/2qpbpp1/4pn2/ppP4p/P2P1PP1/8/1RP1P2P/1NBQKBNR b K - 0 10
FEN state: rnb2rk1/2qpbpp1/4pn2/ppP4p/P2P1PP1/8/1RP1P2P/1NBQKBNR b K - 0 10 ; Best move: c8b7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black rook at f8 and black king at g8. Black queen at c7, black pawn at d7, black bishop at e7, black pawn at f7 and black pawn at g7. Black pawn at e6 and black knight at f6. Black pawn at a5, black pawn at b5, white pawn at c5 and black pawn at h5. White pawn at a4, white pawn at d4, white pawn at f4 and white pawn at g4. White rook at b2, white pawn at c2, white pawn at e2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1, 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.