r1b2k2/3pp3/nq1pBn1p/1p4r1/1P3P2/2N3PP/1B1N1P2/3K3R b - - 3 21
FEN state: r1b2k2/3pp3/nq1pBn1p/1p4r1/1P3P2/2N3PP/1B1N1P2/3K3R b - - 3 21 ; Best move: g5g7
The current state of the chess board is: Black rook at a8, black bishop at c8 and black king at f8. Black pawn at d7 and black pawn at e7. Black knight at a6, black queen at b6, black pawn at d6, white bishop at e6, black knight at f6 and black pawn at h6. Black pawn at b5 and black rook at g5. White pawn at b4 and white pawn at f4. White knight at c3, white pawn at g3 and white pawn at h3. White bishop at b2, white knight at d2 and white pawn at f2. White king at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.