3r1bnr/p5pp/1pppbk2/5p1P/1nPPqP2/N3P1P1/1P1Q3R/R1B2BK1 b - - 1 21
FEN state: 3r1bnr/p5pp/1pppbk2/5p1P/1nPPqP2/N3P1P1/1P1Q3R/R1B2BK1 b - - 1 21 ; Best move: a7a5
The current state of the chess board is: Black rook at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at g7 and black pawn at h7. Black pawn at b6, black pawn at c6, black pawn at d6, black bishop at e6 and black king at f6. Black pawn at f5 and white pawn at h5. Black knight at b4, white pawn at c4, white pawn at d4, black queen at e4 and white pawn at f4. White knight at a3, white pawn at e3 and white pawn at g3. White pawn at b2, white queen at d2 and white rook at h2. White rook at a1, white bishop at c1, white bishop at f1 and white king at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.