(;AP[HexGui:0.10.GIT]
C[2022/01/28

Black\: Frank
White\: Bian

Black wins.]FF[4]GM[11]PL[B]
SZ[11];B[j10];W[f6];B[d5];W[e8];B[d8]C[Eric\: good];W[c9];B[d9];W[d6];
B[c6];W[c7];B[e6](;W[f4]C[Eric\: better e7, see next variation.];B[e5];
W[e3];B[d3];W[d4];B[b5];W[c2];B[b4];W[e1];B[e2];W[f1];B[f2];W[g1];B[g2];
W[h1];B[h2];W[i1];B[j2];W[i2];B[i3];W[h3];B[h4](;W[f5]
C[Mohex\: losing move. e7 was winning, see next variation.];B[g6];W[f9];
B[f7];W[e7];B[f8];W[e10];B[h8];W[resign])(;W[e7]
C[This is the last possible moment when Black still cares about the e6-d8 bridge.

According to Mohex, this move is winning.]
;B[i6]C[Perhaps Black's best chance.];W[i7]
C[This wins, though not locally.];B[h7];W[j4];B[g6];W[g9];B[f8];W[e10];
B[e9];W[c11];B[b10];W[c10];B[b9];W[c8];B[a8];W[b7];B[a7];W[b6];B[a6];
W[c5]))(;W[e7]
C[Eric\:

White should respond here, since if Black doesn't immediately answer this peep, then Black shouldn't have made the e6-e7 exchange.]
))
