(;AP[HexGui:0.10.GIT]
C[2021/05/07

Black\: Peter
White\: Frank

Black wins.]FF[4]GM[11]PL[B]
SZ[11];B[a3];W[swap-pieces];B[h4];W[h9];B[i9];W[i8];B[e7];W[g5];B[f5];
W[g3];B[i4];W[e8];B[d8];W[c10];B[d9];W[d10];B[e9];W[e10];B[g9];W[f9]
C[Eric\:


I would've immediately played h10 instead of this, due to concern about c10 getting cut off from the A-edge.

(h10 captures the corner, and in particular guarantees that ladders toward this corner connect.)]
;B[g8];W[h6];B[f6](;W[g4]
C[White might have tried foiling at h2. See next variations.];B[f3];
W[f4];B[d5];W[f2];B[e3];W[resign])(;W[h2]C[Foiling.];B[j4]
C[Eric\:


It was slightly tricky to check, but indeed, Black can't "counter-foil" against h6, even if White connecting e10 to the K-edge doesn't matter.

I might check to see if I can find more-general conditions for this.]
;W[g4];B[f3](;W[e3];B[d5])(;W[f4];B[d5];W[e2];B[d4];W[g1];B[d2];W[d3];
B[b4];W[c4];B[b5];W[c5];B[b6](;W[d6];B[c6];W[e5];B[c7])(;W[d7](;B[c6];
W[e5];B[b8];W[c8];B[b9];W[c9];B[a11])(;B[c7]C[Eric\:

somewhat faster]))
)))
