r1bqkb1r/1p4pp/3p1p2/pPp1p3/1QPn1P1P/B1NP3N/P3P1Bn/1R2K2R b K - 3 16
FEN state: r1bqkb1r/1p4pp/3p1p2/pPp1p3/1QPn1P1P/B1NP3N/P3P1Bn/1R2K2R b K - 3 16 ; Best move: a5b4
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 and black rook at h8. Black pawn at b7, black pawn at g7 and black pawn at h7. Black pawn at d6 and black pawn at f6. Black pawn at a5, white pawn at b5, black pawn at c5 and black pawn at e5. White queen at b4, white pawn at c4, black knight at d4, white pawn at f4 and white pawn at h4. White bishop at a3, white knight at c3, white pawn at d3 and white knight at h3. White pawn at a2, white pawn at e2, white bishop at g2 and black knight at h2. White rook at b1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 3. Full move number is 16. Black to move.