4kbnr/rppqppp1/7p/pb6/PP1P1P1P/3PBN2/4KPPR/RN2QB2 b k - 2 17
FEN state: 4kbnr/rppqppp1/7p/pb6/PP1P1P1P/3PBN2/4KPPR/RN2QB2 b k - 2 17 ; Best move: a5b4
The current state of the chess board is: Black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at c7, black queen at d7, black pawn at e7, black pawn at f7 and black pawn at g7. Black pawn at h6. Black pawn at a5 and black bishop at b5. White pawn at a4, white pawn at b4, white pawn at d4, white pawn at f4 and white pawn at h4. White pawn at d3, white bishop at e3 and white knight at f3. White king at e2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white queen at e1 and white bishop at f1. Black kingside is the only castle move available. Half move number is 2. Full move number is 17. Black to move.