(;AP[HexGui:0.10.GIT]
C[2021/04/30

Black\: Sarah
White\: Bian

Handicap\: 0.5

White wins.]
FF[4]GM[11]PL[B]SZ[11];B[f6];W[d9];B[e9];W[f4];B[g4];W[f7];B[e8];W[e7];
B[c8];W[d6](;B[c6]
C[Letting White build this wall is not good for Black. See next variation for an alternative that was also played.]
;W[d5];B[c5];W[d4];B[c4];W[d3];B[c3];W[d2];B[c2];W[c7];B[a8];W[b8];B[a9]
;W[b10];B[b9];W[d8];B[g7];W[h2];B[i2];W[i3];B[h3];W[g5](;B[h4]
C[Peter\: I would have tried g6, then i4. See next variation against Mohex. It's still winning for White, but much harder to pull off.]
;W[h5];B[j4];W[i6];B[resign])(;B[g6];W[f8];B[g8];W[f5];B[i4];W[h4];B[k2]
;W[h5];B[i5];W[h6];B[i6];W[j3];B[k3];W[j4];B[k4];W[j5];B[k5];W[i8]
C[Note\: not Tom's move! The follow-up is different.];B[j7];W[g9];B[j8];
W[j6];B[k6];W[i10];B[h9];W[i9];B[i7];W[h8]))(;B[g7];W[g3];B[i2];W[i3];
B[h3](;W[g5];B[h4];W[h5]
C[Mohex\: this position is winning for White, and White keeps the win until the end.]
;B[j4];W[i6];B[e5](;W[f5];B[d4]
C[Eric\:

I don't see anything better for Black, but after D4, I can prove that White wins.

White kept the win for the rest of the game, including when White passed.]
;W[d5];B[e4];W[e6];B[c6]C[White passes one move.
];B[c5];W[c7];B[a8];
W[b8];B[a9];W[b10];B[b9];W[d8])(;W[g6]
C[Eric\:

This is simple, since White connects to the A-edge via a ladder escape fork at B10, or Tom's move for that matter.]
))(;W[g6]
C[Eric\:

This connects to the K-edge, and thus wins for White, since E7 connects to the A-edge using either the fork at B10 or Tom's move.]
)))
