(;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[e9];W[e3];B[h3];W[f7];B[d8]
C[Eric\:

Black's 7 and 9 seemed fine to me, until I saw and analyzed the position just after White's 10.  ^_^

Now I'm thinking Black should've played E7 instead of D8, so that F6 at least connects to the 11-edge.]
;W[d9];B[e8];W[f5];B[g5];W[e7];B[g7];W[h4](;B[i4];W[h5];B[i5];W[h6];
B[i6];W[h7];B[i7](;W[h9];B[i9];W[i8](;B[k7]
C[Wasted move because White has ladder escapes on both sides.](;W[e6];
B[j6];W[j10];B[h8];W[f9];B[g9];W[f10]
C[Eric\:


(White is winning anyway, but locally\:)

white F10 kills G9, so this exchange just gives White a free piece.  (In particular, it removes the possibility of Black playing F10)]
;B[c3];W[c7];B[f8];W[g8];B[resign])(;W[j7]
C[Eric\:

Even just locally, this exchange gives up everything Black had in this corner.
(namely, the possibility of Black playing J7)]
))(;B[j7]
C[Eric\:

White just played I8, so Black should get this exchange.];
W[j8]))(;W[h8]C[Eric\:

White can connect.];B[i8];W[j9];B[h10];W[h9];
B[i9];W[i3]))(;B[i5]
C[Eric\:

I would either connect at G4 or play this, due to White's response to I4.]
))
