r2k1b1r/Np1p1pp1/2p4n/pP6/P1PPpP1P/4P3/1R1K3P/2BQnBNR b - - 2 20
FEN state: r2k1b1r/Np1p1pp1/2p4n/pP6/P1PPpP1P/4P3/1R1K3P/2BQnBNR b - - 2 20 ; Best move: f8b4
The current state of the chess board is: Black rook at a8, black king at d8, black bishop at f8 and black rook at h8. White knight at a7, black pawn at b7, black pawn at d7, black pawn at f7 and black pawn at g7. Black pawn at c6 and black knight at h6. Black pawn at a5 and white pawn at b5. White pawn at a4, white pawn at c4, white pawn at d4, black pawn at e4, white pawn at f4 and white pawn at h4. White pawn at e3. White rook at b2, white king at d2 and white pawn at h2. White bishop at c1, white queen at d1, black knight at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. Black to move.