r5nr/p2bk2p/np2ppp1/1q1p4/PP3P2/2p2Q1N/2K1P1PP/1NR2B1R b - - 2 17
FEN state: r5nr/p2bk2p/np2ppp1/1q1p4/PP3P2/2p2Q1N/2K1P1PP/1NR2B1R b - - 2 17 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at d7, black king at e7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at e6, black pawn at f6 and black pawn at g6. Black queen at b5 and black pawn at d5. White pawn at a4, white pawn at b4 and white pawn at f4. Black pawn at c3, white queen at f3 and white knight at h3. White king at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White knight at b1, white rook at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 17. Black to move.