r4br1/p2pp1pp/bq3n1B/n1P2kP1/1p5P/P3K2N/1PP1PQ1R/RN3B2 b - - 2 21
FEN state: r4br1/p2pp1pp/bq3n1B/n1P2kP1/1p5P/P3K2N/1PP1PQ1R/RN3B2 b - - 2 21 ; Best move: f5e6
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at d7, black pawn at e7, black pawn at g7 and black pawn at h7. Black bishop at a6, black queen at b6, black knight at f6 and white bishop at h6. Black knight at a5, white pawn at c5, black king at f5 and white pawn at g5. Black pawn at b4 and white pawn at h4. White pawn at a3, white king at e3 and white knight at h3. White pawn at b2, white pawn at c2, white pawn at e2, white queen at f2 and white rook at h2. White rook at a1, white knight at b1 and white bishop at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.