rq4nr/p2k4/nPpbpp1p/4PPp1/3K4/N6N/1PPP1PBP/1RBQ3R b - - 0 21
FEN state: rq4nr/p2k4/nPpbpp1p/4PPp1/3K4/N6N/1PPP1PBP/1RBQ3R b - - 0 21 ; Best move: b8b6
The current state of the chess board is: Black rook at a8, black queen at b8, black knight at g8 and black rook at h8. Black pawn at a7 and black king at d7. Black knight at a6, white pawn at b6, black pawn at c6, black bishop at d6, black pawn at e6, black pawn at f6 and black pawn at h6. White pawn at e5, white pawn at f5 and black pawn at g5. White king at d4. White knight at a3 and white knight at h3. White pawn at b2, white pawn at c2, white pawn at d2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.