End
of Variation I.
Returning
to the game:
4.E4

Black
is making two threats here: to cut through the center with F6**,
or to cut across the top with G3*.
Variation
II. Suppose White now plays 5.C4:

This
isn’t as good here as it was in variation I. The problem is, Black’s
E4 peg is close enough to make some serious threats. Specifically,
Black can play 6.B5!

Question
4: If White now plays 7.I5* how does Black win? Answer
Question 5: If White instead plays 7.I7* how does
Black win? Answer
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I
emphatically welcome all questions, both general and specific, as
well as any comments you may care to send me! My email is: twixt@cstone.net
-
David
J. Bush