1rbq1bn1/2pk4/p2Q4/3Pp1p1/6Pp/5r1P/PN1P1P2/RNBK1B1R b - - 4 21
FEN state: 1rbq1bn1/2pk4/p2Q4/3Pp1p1/6Pp/5r1P/PN1P1P2/RNBK1B1R b - - 4 21 ; Best move: f8d6
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black bishop at f8 and black knight at g8. Black pawn at c7 and black king at d7. Black pawn at a6 and white queen at d6. White pawn at d5, black pawn at e5 and black pawn at g5. White pawn at g4 and black pawn at h4. Black rook at f3 and white pawn at h3. White pawn at a2, white knight at b2, white pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.