It’s Your Move: daily chess puzzle #280
Is the Pe6 poisoned?
Spassky v Fischer, Siegen 1970
Solution
Answer: no, because before the 1972 match, Fischer had never beaten Spassky.
Longer answer: 1 Qe6 Rd1 2 Qf7!
My engine give a long line in which White emerges as better: too long for humans to compute, but it is clear from 2 Qf7 that White is at least not worse.
allanbeardsworth 
After 1 Qxe6, doesn’t 1 … Rd6 win the knight on f6? What am I missing here?
Ah, I see now that 1 … Rd6 doesn’t win a piece because of 2 Qe4, hitting the rook on a8.