r1b1kb2/p1n1B3/3p1r1p/nNp1pp2/PPP5/5PPp/RQ2PK2/5BNR w - - 0 21
FEN state: r1b1kb2/p1n1B3/3p1r1p/nNp1pp2/PPP5/5PPp/RQ2PK2/5BNR w - - 0 21 ; Best move: b5c7
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at a7, black knight at c7 and white bishop at e7. Black pawn at d6, black rook at f6 and black pawn at h6. Black knight at a5, white knight at b5, black pawn at c5, black pawn at e5 and black pawn at f5. White pawn at a4, white pawn at b4 and white pawn at c4. White pawn at f3, white pawn at g3 and black pawn at h3. White rook at a2, white queen at b2, white pawn at e2 and white king at f2. White bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.