(;AP[HexGui:0.10.GIT]
C[2021/10/29

Black\: Kyle
White\: Frank

Black wins.
]FF[4]GM[11]PL[B]
SZ[11];B[a3];W[g8];B[d8];W[d4];B[g5];W[c9];B[i8];W[h3];B[i4];W[h9];B[h8]
;W[g9];B[f7](;W[d9]C[Silly.];B[e9];W[resign])(;W[e9];B[d9];W[c11];B[j7](
;W[i6](;B[h7];W[g6];B[j4]
C[Eric\:


Did the players think this was an obvious win for Black?

It's not clear to me.

Peter\: 

No, we just didn't record the rest of the variation. The variation on move 19 leads to a very similar situation.]
;W[h5]
C[Eric\:

For example, this is overlap between i4's connection to g5 and i4's connection to i8.]
)(;B[d10];W[d11];B[e10];W[e11];B[f10];W[f11];B[g10];W[g11];B[h10];W[h11]
;B[i10];W[i11];B[k10];W[j10];B[k9];W[j9];B[k8];W[i9];B[j4];W[k5];B[h7];
W[g6]C[Eric\:  good and];B[f6];W[h5]C[Eric\: good];B[g7];W[f4]
C[Eric\:  and good];B[c6];W[e5]
C[Eric\:

though to my surprise, that sequence is apparently not _enough_ for White]
;B[b5];W[d7];B[b8]))(;W[h10]
C[Eric\:

This is bad, because Black g11 makes White h10 completely useless, and is a ladder escape.

(After g11, with or without h10, the j9 area is whoever moves connects.)]
;B[j9];W[i6];B[h7];W[g6];B[f6];W[h5];B[g7])))
