r1bqk3/p1pp2p1/n2b1pPr/1p1nP2p/QPP1P2P/5B2/P2P1K2/R1B1N1NR b q - 2 17
FEN state: r1bqk3/p1pp2p1/n2b1pPr/1p1nP2p/QPP1P2P/5B2/P2P1K2/R1B1N1NR b q - 2 17 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black king at e8. Black pawn at a7, black pawn at c7, black pawn at d7 and black pawn at g7. Black knight at a6, black bishop at d6, black pawn at f6, white pawn at g6 and black rook at h6. Black pawn at b5, black knight at d5, white pawn at e5 and black pawn at h5. White queen at a4, white pawn at b4, white pawn at c4, white pawn at e4 and white pawn at h4. White bishop at f3. White pawn at a2, white pawn at d2 and white king at f2. White rook at a1, white bishop at c1, white knight at e1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 2. Full move number is 17. Black to move.