r2q1k1r/5pp1/1Q2b2n/p1ppP1bp/PpP1PPP1/1n1B3P/N7/R1BK2NR w - - 1 21
FEN state: r2q1k1r/5pp1/1Q2b2n/p1ppP1bp/PpP1PPP1/1n1B3P/N7/R1BK2NR w - - 1 21 ; Best move: b6d8
The current state of the chess board is: Black rook at a8, black queen at d8, black king at f8 and black rook at h8. Black pawn at f7 and black pawn at g7. White queen at b6, black bishop at e6 and black knight at h6. Black pawn at a5, black pawn at c5, black pawn at d5, white pawn at e5, black bishop at g5 and black pawn at h5. White pawn at a4, black pawn at b4, white pawn at c4, white pawn at e4, white pawn at f4 and white pawn at g4. Black knight at b3, white bishop at d3 and white pawn at h3. White knight at a2. White rook at a1, white bishop at c1, white king at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.