(;AP[HexGui:0.10.GIT]
C[2020/10/30

Black\: Eric
White\: Bian

Handicap\: -1

White wins.
]
FF[4]GM[11]PL[B]SZ[12];B[k11];W[g7];W[g6];B[d5];W[d4];B[e4];W[e7];B[j5];
W[i8];B[j8];W[i9];B[j9];W[j7];B[l6];W[h10];B[k5];W[k7];B[g8];W[i6];B[d7]
;W[d8];B[b9];W[c8];B[b8];W[c7];B[b7];W[c6];B[a6];W[b6];B[a7];W[c3];B[b4]
;W[c2];B[c4];W[d3];B[c5];W[f3](;B[h3]
C[e3 would have allowed Black to connect to the 1-edge via a 2-to-4 switchback (but White still wins on the 12-edge). See next variation.]
;W[h2];B[h4];W[i2];B[l2];W[i4];B[g2];W[e3];B[g3];W[f4];B[resign])(;B[e3]
C[e3 connects to the 1-edge by switchback.];W[f1];B[f2];W[g1];B[g2];
W[h1];B[h2];W[i1];B[i2];W[j1];B[k2];W[j2];B[i4];W[j3];B[l3];W[i3];B[h4];
W[h3];B[g4]C[Black is connected to the 1-edge, but not the 12-edge.];
W[b10];B[c9];W[c10];B[d9];W[d10];B[e9];W[e10];B[f10];W[f9];B[f8];W[g9]))

