2kr3r/pqp2pb1/bp2p3/3pP2p/1P1P1P1p/PN2B2P/2P3P1/R2QK1R1 b Q - 4 21
FEN state: 2kr3r/pqp2pb1/bp2p3/3pP2p/1P1P1P1p/PN2B2P/2P3P1/R2QK1R1 b Q - 4 21 ; Best move: f7f6
The current state of the chess board is: Black king at c8, black rook at d8 and black rook at h8. Black pawn at a7, black queen at b7, black pawn at c7, black pawn at f7 and black bishop at g7. Black bishop at a6, black pawn at b6 and black pawn at e6. Black pawn at d5, white pawn at e5 and black pawn at h5. White pawn at b4, white pawn at d4, white pawn at f4 and black pawn at h4. White pawn at a3, white knight at b3, white bishop at e3 and white pawn at h3. White pawn at c2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 4. Full move number is 21. Black to move.