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

Black\: Eric
White\: Sarah

Handicap\: -1

Black wins.]
FF[4]GM[11]PL[B]SZ[11];B[k8];W[f7];W[f6];B[d5];W[d7];B[j4];W[i6]
C[Eric\:

i7 was better here,];B[j7]
C[Eric\:

since this works very nicely with Black's other pieces along the K-edge and against i6.]
;W[j6];B[h6];W[g8]
C[Eric\:

H6 is probably connected to the 11-edge, so White should play near the K1 corner instead; maybe H2.

That would, for example, leave the possibility of F8 instead of G8, which would stop C6 from begin a forcing move for Black.]
;B[f8];W[g7];B[h7];W[j10];B[h8];W[g10];B[g9]
C[Eric\:

Black can connect via the K11 corner, by playing h10 or i10.  I was giving handicap, so I played this instead in the hope that White would waste a move here.]
(;W[f10]
C[Eric\:

White indeed wasted a move here, since F10 does not even _threaten_ to cut Black off from the 11-edge\:  Black connects via the K11 corner or F9.

https\://www.hexwiki.net/index.php/Edge_template_IV2b

See next variation for a better move.]
;B[i4];W[resign])(;W[e11]
C[Eric\:

This would be the move to keep the G9 ladder from connecting\:  White pulls Black away from F8.

However, since Black can connect via the K11 corner instead, White shouldn't play this either, since it would just let Black get stronger before Black connects.

White should instead defend near the K1 corner; maybe with H2.]
;B[d9];W[d10]C[Eric\:

https\://www.hexwiki.net/index.php/Foiling]))
