1rb2q1r/p1k1pp1p/1p3b1P/6R1/1n1PP1n1/P7/1PP1QPP1/2BRKBN1 b - - 0 21
FEN state: 1rb2q1r/p1k1pp1p/1p3b1P/6R1/1n1PP1n1/P7/1PP1QPP1/2BRKBN1 b - - 0 21 ; Best move: f6g5
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at f8 and black rook at h8. Black pawn at a7, black king at c7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at b6, black bishop at f6 and white pawn at h6. White rook at g5. Black knight at b4, white pawn at d4, white pawn at e4 and black knight at g4. White pawn at a3. White pawn at b2, white pawn at c2, white queen at e2, white pawn at f2 and white pawn at g2. White bishop at c1, white rook at d1, white king at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.