Tactics,
Openings, Endgames -
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Few pieces
By giving up his passed pawn with 33.d6, White can force
33...Bxd6 34.Nxd6+
Qxd6 and make the black king vulnerable to checks.
This...
A) ... leads by force to the win of Black's rook or queen;
B) ... results in a balanced position/perpetual check;
C) ... ultimately just blunders a pawn.
Solution