(;AP[HexGui:0.10.GIT]
C[2021/09/10

Black\: Sarah
White\: Peter

Handicap\: 1

Black wins.]
FF[4]GM[11]PL[B]SZ[11];B[c10];B[f6];W[d8];B[e8];W[f5];B[h4];W[f7];B[e7];
W[g5];B[h5];W[g6];B[i6]
C[Eric\:

h7 only gives White a height-3 ladder towards the K1 corner.];
W[h8];B[i8];W[h9];B[i9];W[h6];B[i5]
C[Eric\:

j5 too only gives White a height-3 ladder towards the K1 corner.]
;W[i7];B[k6](;W[h3]
C[Peter\: This is not so great for White, because although White connects to the k-edge, Black gets all ladder escapes alog the 1-edge. Better\: see next variation.]
;B[j2];W[j3](;B[i3]C[Eric\: or j6, see next variation.];W[j6];B[e5];
W[f4];B[d4];W[e6];B[c7];W[d5];B[b6]
C[Eric\:

Black is strong-enough in the K1 corner that this wins, but locally, Black should immediately respond to D5 with E4.

That is a peep  ( https\://www.hexwiki.net/index.php/Peep ) ,  and if Black carries out the threat (D6) then Black gets all of E4,D5,D6 (since D5 will be dead).]
;W[c3];B[c5]C[Eric\: e4 connects locally.];W[e3];B[d3];W[e1];B[e2];W[f1]
;B[f2];W[g1];B[g2];W[h1];B[h2];W[i1];B[i2];W[d9];B[b9];W[resign])(;B[j6]
C[Eric\:

This connection probably also wins.];W[i3];B[e4]))(;W[j6];
B[k5];W[j5];B[k4];W[j4];B[k3];W[j2];B[j3];W[i3];B[i4];W[h3];B[g4];W[g3];
B[e4];W[e3];B[f3];W[g1];B[c4];W[e2];B[d2];W[d4];B[c5];W[d6]))
