2bqkb1r/rppppp2/p5p1/PQ5p/1nP3n1/RPNP1P1N/4P1BP/2B1K2R b K - 2 13
FEN state: 2bqkb1r/rppppp2/p5p1/PQ5p/1nP3n1/RPNP1P1N/4P1BP/2B1K2R b K - 2 13 ; Best move: a6b5
The current state of the chess board is: Black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at e7 and black pawn at f7. Black pawn at a6 and black pawn at g6. White pawn at a5, white queen at b5 and black pawn at h5. Black knight at b4, white pawn at c4 and black knight at g4. White rook at a3, white pawn at b3, white knight at c3, white pawn at d3, white pawn at f3 and white knight at h3. White pawn at e2, white bishop at g2 and white pawn at h2. White bishop at c1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 13. Black to move.