r5n1/p1p1k1pr/1p1qb2p/n2Np3/1b1PQ2P/4PPP1/PP1P4/RNB1KBR1 b Q - 4 17
FEN state: r5n1/p1p1k1pr/1p1qb2p/n2Np3/1b1PQ2P/4PPP1/PP1P4/RNB1KBR1 b Q - 4 17 ; Best move: d6d5
The current state of the chess board is: Black rook at a8 and black knight at g8. Black pawn at a7, black pawn at c7, black king at e7, black pawn at g7 and black rook at h7. Black pawn at b6, black queen at d6, black bishop at e6 and black pawn at h6. Black knight at a5, white knight at d5 and black pawn at e5. Black bishop at b4, white pawn at d4, white queen at e4 and white pawn at h4. White pawn at e3, white pawn at f3 and white pawn at g3. White pawn at a2, white pawn at b2 and white pawn at d2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 4. Full move number is 17. Black to move.