1Qb1k1nr/1p2p1bp/r3B1p1/nP6/p3pq2/P4PP1/R1PP3P/1NB2KNR b k - 6 21
FEN state: 1Qb1k1nr/1p2p1bp/r3B1p1/nP6/p3pq2/P4PP1/R1PP3P/1NB2KNR b k - 6 21 ; Best move: f4b8
The current state of the chess board is: White queen at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at e7, black bishop at g7 and black pawn at h7. Black rook at a6, white bishop at e6 and black pawn at g6. Black knight at a5 and white pawn at b5. Black pawn at a4, black pawn at e4 and black queen at f4. White pawn at a3, white pawn at f3 and white pawn at g3. White rook at a2, white pawn at c2, white pawn at d2 and white pawn at h2. White knight at b1, white bishop at c1, white king at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 6. Full move number is 21. Black to move.