Chapter 28: Korchnoi's Manoeuvre
I am reading How to Beat Your Dad at Chess by Murray Chandler. I am blogging to create supporting puzzles in studying the content.
Viktor Korchnoi (23 March 1931 – 6 June 2016) was a chess grandmaster who defected to the West and fought a Cold War grudge match against the world champion Anatoly Karpov.
I spell it "maneuver" as in American English (US), but it is "manoeuvre" in British English (UK, Canada, Australia, etc.). Key elements of what New Zealand chess grandmaster Chandler calls "Korchnoi's Manoeuvre":
1) 
on the a2-g8 diagonal, pinning the 
on f7;
2) 
on the bl-h7 diagonal; and
3) h-pawn has moved.
The significance of the above three factors is that the g6-square is probably available
to . is often innocently developed on the c2-square, so it is understandable
that its dramatic arrival may be surprising. This was the case when, as Black, Korchnoi played his "manoeuvre" against Tatai in Beersheba 1978 (the position given immediately below).
120) This is the position at 3:37 in the YT video of this match. f-
is pinned and 
forces White to deal with the threat of 
xh3. Eventually, bringing in 
e2 and 
d4 fatally traps 
.
.
to complete the trap with the unanswerable thread of h7 mate after a necessary xh6.Chapter 29: A bishop sacrifice | Chapter 27: More Queen g6 Bombshells
