1.
i1-g3
is not possible because of 1. … i2-e2
(White must then play 2. f1-d2 to
recycle pieces and offers Black the possibility to do the same on the d1-d8
line). So White plays 1. e2;xGe3. He
must remove one of his GIPF-pieces, otherwise he’ll run out of pieces. The
GIPF on Ge3 is the only one he can
take and still be sure that Black will not get a chance to save Gd5 without running out of pieces. He needs both Ge4 and Ge5 to
keep Black under pressure. It
prevents Black from playing 1. … b1-d3,
because that would make Ge4 too
dangerous on the a5-i1 diagonal. So
he has little other choice than 1. …
a3-c5. But that doesn’t help
either: 2. i1-g3 / f1-f4 / 3. h1-c4 /
c1-c5;x / 4. f1-f4;xGd6 / X.
Examples of escapes if White would have removed another GIPF:
xGe4)
1. e2;xGe4 / a4-c4 / 2. i1-g3 / f1-f4 / 3. a2-e6 / f1-f5;x …
xGe5)
1. e2;xGe5 / b1-d3 / 2. g1-c4 / d2 / 3. h1-c4 / c1-c5;x …