1rbq1k2/2np2p1/pp1Q1B2/4p3/2PP1p2/2R5/PP2PnP1/4KBr1 b - - 0 21
FEN state: 1rbq1k2/2np2p1/pp1Q1B2/4p3/2PP1p2/2R5/PP2PnP1/4KBr1 b - - 0 21 ; Best move: f8g8
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8 and black king at f8. Black knight at c7, black pawn at d7 and black pawn at g7. Black pawn at a6, black pawn at b6, white queen at d6 and white bishop at f6. Black pawn at e5. White pawn at c4, white pawn at d4 and black pawn at f4. White rook at c3. White pawn at a2, white pawn at b2, white pawn at e2, black knight at f2 and white pawn at g2. White king at e1, white bishop at f1 and black rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.