r1bqkbnr/1pppppp1/p6p/8/1P2PN2/3B3P/P1nPKPP1/R1BQ3R b k - 1 10
FEN state: r1bqkbnr/1pppppp1/p6p/8/1P2PN2/3B3P/P1nPKPP1/R1BQ3R b k - 1 10 ; Best move: c2b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black pawn at a6 and black pawn at h6. White pawn at b4, white pawn at e4 and white knight at f4. White bishop at d3 and white pawn at h3. White pawn at a2, black knight at c2, white pawn at d2, white king at e2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white queen at d1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 10. Black to move.