Nn3kn1/4bp2/rp1pp2r/p4Ppp/4P1P1/PqP4P/3P1KBN/R1BQ1b2 b - - 1 21
FEN state: Nn3kn1/4bp2/rp1pp2r/p4Ppp/4P1P1/PqP4P/3P1KBN/R1BQ1b2 b - - 1 21 ; Best move: b3d1
The current state of the chess board is: White knight at a8, black knight at b8, black king at f8 and black knight at g8. Black bishop at e7 and black pawn at f7. Black rook at a6, black pawn at b6, black pawn at d6, black pawn at e6 and black rook at h6. Black pawn at a5, white pawn at f5, black pawn at g5 and black pawn at h5. White pawn at e4 and white pawn at g4. White pawn at a3, black queen at b3, white pawn at c3 and white pawn at h3. White pawn at d2, white king at f2, white bishop at g2 and white knight at h2. White rook at a1, white bishop at c1, white queen at d1 and black bishop at f1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.