r1b2bnr/p1p1q3/n1k1pppp/2Q5/1p1p3P/N1PBP3/PP1P1PP1/R1B1K1NR b K - 5 13
FEN state: r1b2bnr/p1p1q3/n1k1pppp/2Q5/1p1p3P/N1PBP3/PP1P1PP1/R1B1K1NR b K - 5 13 ; Best move: a6c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7 and black queen at e7. Black knight at a6, black king at c6, black pawn at e6, black pawn at f6, black pawn at g6 and black pawn at h6. White queen at c5. Black pawn at b4, black pawn at d4 and white pawn at h4. White knight at a3, white pawn at c3, white bishop at d3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, 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 5. Full move number is 13. Black to move.