rn4nr/p2Q4/b2bp1k1/5p1p/1R1q3p/1KPB4/1P1P1PPR/1NB3N1 b - - 0 21
FEN state: rn4nr/p2Q4/b2bp1k1/5p1p/1R1q3p/1KPB4/1P1P1PPR/1NB3N1 b - - 0 21 ; Best move: d4d5
The current state of the chess board is: Black rook at a8, black knight at b8, black knight at g8 and black rook at h8. Black pawn at a7 and white queen at d7. Black bishop at a6, black bishop at d6, black pawn at e6 and black king at g6. Black pawn at f5 and black pawn at h5. White rook at b4, black queen at d4 and black pawn at h4. White king at b3, white pawn at c3 and white bishop at d3. White pawn at b2, white pawn at d2, white pawn at f2, white pawn at g2 and white rook at h2. White knight at b1, white bishop at c1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.