(;AP[HexGui:0.10.GIT]
C[2021/07/02

Black\: Sarah
White\: Peter

Handicap\: 0.5

White wins.]
FF[4]GM[11]PL[B]SZ[11];B[f6];W[g10];B[c10]
C[Eric\:

b10 is probably better, since it's on the short diagonal.  (So it reduces how much of the A-edge White can access.)]
;W[e8];B[d8];W[e5];B[e6]C[d7 dominates this.];W[g4];B[h4];W[g5];B[h5];
W[g6](;B[h7]
C[Mistake. Now White gets a 3rd row ladder and switchback.

See next variation for an alternate ending.]
;W[h6];B[j5];W[i6];B[j6];W[i7];B[j7];W[i9];B[i8];W[g9];B[c6]
C[Eric\:

Locally, f8 makes White choose, although White still wins in the way White did win.]
;W[d4];B[c4];W[c5];B[a6];W[b6];B[a7];W[b7];B[a8];W[b8];B[a9];W[b10];
B[b9];W[c9];B[f8];W[h8];B[resign])(;B[h6];W[f9]
C[Peter\:

The so-called "Bian's move" \:)

I think Black wins anyway, see second variation on the next move.



Eric\:

Nice

(As Peter mentioned, G8 indeed wins for Black, but I'm not sure I would've seen that.)]
(;B[i9];W[g8];B[i7];W[i8];B[k7]
C[Eric\:

Now White wins even if it's Black's turn again.  (j2 or j10)];
W[j2])(;B[g8];W[f7];B[g9];W[f10];B[i9];W[h9];B[i8];W[h7];B[j6];W[i6];
B[j5];W[i5];B[j4];W[j2];B[i3];W[i2];B[h3];W[h2];B[g3];W[g2];B[f3];W[f2];
B[d3];W[e3];B[d4];W[e4];B[c6])))
