(;AP[HexGui:0.10.GIT]
C[2021/11/05

Black\: Sarah
White\: Peter

Handicap\: 0.5

White wins.
]
FF[4]GM[11]PL[B]SZ[11];B[f6];W[f8];B[e8];W[d10];B[c10];W[d9];B[c9];W[d8]
;B[c7];W[c8];B[a9];W[b6];B[b8];W[d5];B[e5];W[d6];B[d7];W[e6];B[e7];W[f5]
;B[h4];W[h3](;B[j2]
C[Peter\: Now White can win via switchback. Better\: i3, see next variation.]
;W[i3];B[j3](;W[g5]
C[Peter\: Mistake. i4 wins via the d6 (or c6) switchback. See next variation.]
;B[i5]C[Peter\: Good!];W[h6](;B[i7]
C[Peter\: Losing. i6 is winning, see next variation.];W[j4];B[i4];W[i6];
B[resign])(;B[i6]C[Winning.]))(;W[i4];B[j4](;W[i6]
C[Peter\: c6 switchback.];B[i5];W[g6];B[h6];W[g8])(;W[i5]
C[d6 switchback.];B[j5];W[i7];B[i6];W[g7];B[h7];W[g9])))(;B[i3];W[j1];
B[g4];W[g3];B[f4];W[f3];B[e4](;W[e3];B[d4];W[d3];B[c5]
C[Peter\: Now White loses the switchback threat (g5 is captured, and White still needs to play a move in the a1 area).]
;W[b4];B[k1];W[j2];B[k2];W[j3];B[k3];W[i5];B[j5];W[i7];B[i6];W[g7];B[h6]
;W[g6];B[h5];W[g5];B[c6])(;W[g5]
C[Peter\: Instead of letting Black get c5, White should push here first.]
;B[h5];W[g6];B[h6];W[i7])))
