(;AP[HexGui:0.10.GIT]
C[2023/01/17

Black\: Mason
White\: Peter

Black wins.
]FF[4]GM[11]PL[B]
SZ[11];B[a11];W[swap-pieces];B[e7];W[d3];B[c3];W[c4];B[g4];W[f6];B[i7]
C[Eric\:

Neat.  I guess the point of this is, working with it against h5.

Peter\: At the time, I thought it was a botched corner move. But it plays nicely with e7 and g4.


Eric\:

Yes.  e7 makes it hard for White to try exploiting that i7 is not in a usual place for this corner.]
(;W[g6]
C[Peter\: I wonder if h5 would have been better for White. I was worried that i3 would become forcing. But that might have been less bad than what actually happened. 

However, the next variations show that i3 is indeed an excellent response to h5, and White was probably correct not playing h5.]
;B[h5];W[h6];B[i5];W[g8];B[j7];W[i6];B[j4](;W[k5]
C[Peter\: Bad move. White could have gotten more out of the k11-corner first. Specifically, White could have taken away Black's 3rd row escape. See the next variation.

Mohex\: Losing move. h9 was winning, see the next variation.]
;B[e6];W[f5];B[e5];W[f4];B[e4];W[f2];B[f3];W[g2];B[g3];W[i1];B[h2];W[h1]
;B[j1];W[i2];B[j2];W[h4];B[g5];W[j3];B[i3];W[c11];B[d9];W[resign])(;
W[h9]
C[Eric\:

Ah, yes.  I figured White could probably foil somewhat, but didn't see how.]
;B[i9];W[h10];B[j9];W[k5];B[e6];W[d9];B[c9];W[d8];B[b8];W[c7];B[b7];
W[c6];B[b6];W[a5];B[resign]))(;W[h5];B[i3];W[h3];B[h4](;W[j3]
C[Peter\: Now Black wins. Was i3 sufficiently threatening, or should White have ignored it? See the next variation.]
;B[e6];W[f5];B[e5];W[f4];B[e4];W[f2];B[f3];W[g2];B[g3])(;W[e6]
C[Peter\: White ignores Black's i3. This seems good for Black too?];
B[j4](;W[i6]C[Peter\: Perhaps j5 is better, see the next variation.];
B[k5];W[j6];B[k6];W[j7];B[k7];W[j9];B[j8];W[i9];B[i8];W[h9];B[g8];W[f9];
B[g9];W[f11];B[f10];W[e11];B[d10];W[e10];B[f8];W[e9];B[d8])(;W[j5];B[i5]
;W[i6];B[h6]
C[Peter\: This also looks good for Black.

Mohex\: Yes, Black wins. In particular, h6 is connected to the 11-edge.]
))(;W[h6]
C[Eric\:

Locally, this is better, though the difference probably doesn't matter here.]
)))
