rn1qkb2/3p2r1/4pp1p/Q5p1/BPb1P2n/2NP3P/PBP2PPR/3RK1N1 w - - 1 21
FEN state: rn1qkb2/3p2r1/4pp1p/Q5p1/BPb1P2n/2NP3P/PBP2PPR/3RK1N1 w - - 1 21 ; Best move: a5a8
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at d7 and black rook at g7. Black pawn at e6, black pawn at f6 and black pawn at h6. White queen at a5 and black pawn at g5. White bishop at a4, white pawn at b4, black bishop at c4, white pawn at e4 and black knight at h4. White knight at c3, white pawn at d3 and white pawn at h3. White pawn at a2, white bishop at b2, white pawn at c2, white pawn at f2, white pawn at g2 and white rook at h2. White rook at d1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.