rnb1k1r1/pRp3p1/5p2/5pq1/2PQ2Pp/P4N1P/P2nP1R1/2BK1B2 b - - 0 21
FEN state: rnb1k1r1/pRp3p1/5p2/5pq1/2PQ2Pp/P4N1P/P2nP1R1/2BK1B2 b - - 0 21 ; Best move: c8b7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at g8. Black pawn at a7, white rook at b7, black pawn at c7 and black pawn at g7. Black pawn at f6. Black pawn at f5 and black queen at g5. White pawn at c4, white queen at d4, white pawn at g4 and black pawn at h4. White pawn at a3, white knight at f3 and white pawn at h3. White pawn at a2, black knight at d2, white pawn at e2 and white rook at g2. White bishop at c1, white king at d1 and white bishop at f1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.