r1b1k1r1/3p1ppp/n2b4/p1p1p1PP/1qP4n/P3PP1N/RP6/1NBQ1BKR b q - 4 17
FEN state: r1b1k1r1/3p1ppp/n2b4/p1p1p1PP/1qP4n/P3PP1N/RP6/1NBQ1BKR b q - 4 17 ; Best move: b4b6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at a6 and black bishop at d6. Black pawn at a5, black pawn at c5, black pawn at e5, white pawn at g5 and white pawn at h5. Black queen at b4, white pawn at c4 and black knight at h4. White pawn at a3, white pawn at e3, white pawn at f3 and white knight at h3. White rook at a2 and white pawn at b2. White knight at b1, white bishop at c1, white queen at d1, white bishop at f1, white king at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 4. Full move number is 17. Black to move.