(;AP[HexGui:0.10.GIT]
C[2021/01/22

Black\: Frank
White\: Bian

White wins.
]FF[4]GM[11]PL[B]
SZ[11];B[a7];W[c8];B[e7];W[f4];B[h4];W[h3];B[i3];W[j1];B[e3];W[g2];B[g3]
;W[h2];B[g4];W[f3];B[d6];W[d5];B[e5];W[e4];B[b7]
C[Eric\: I had to play with ghosts to figure out the following, but it turns out that White is still connected to the A edge. So White could ignore b7 and simply connect to the k-edge.]
;W[c4];B[k1];W[g6];B[f5];W[j2];B[k2];W[j3];B[k3];W[j4];B[k4];W[j5];B[k5]
;W[j6];B[k6];W[j8];B[j7];W[i8];B[i7];W[h8];B[h7];W[g8](;B[i5]
C[Peter\: This move is not optimal, as f8 was clearly winning, see next variation.

Eric\: Well, it's the first move that I worked out as winning for Black, although I now see that f8 is simpler.]
;W[d9];B[b10];W[a9](;B[f8]
C[Losing move. 

Eric\: e9 would now have been winning, see next variation.]
;W[e10];B[f9];W[f10];B[g9];W[g10];B[h9];W[h10];B[i9];W[i10];B[resign])(;
B[e9];W[e8];B[f8];W[g7];B[f7]))(;B[f8]
C[Black's group is connected by double threat at g7 and i5.];W[e8];B[g7]
;W[e10];B[d9]C[Black is connected by templates and double threats.]))
