(;AP[HexGui:0.10.GIT]
C[2021/10/22

Black\: Sarah
White\: Frank

Handicap\: 0.5

White wins.
]
FF[4]GM[11]PL[B]SZ[11];B[f6];W[d9];B[g8];W[f7];B[h6];W[h7];B[g7];W[h9];
B[f10]
C[Eric\:


Black should minimax with F8 or B10.

https\://www.hexwiki.net/index.php/Minimax]
;W[h4](;B[g6]
C[Eric\:

The situation where Black has H6 connected to the 11-edge and an F6 stone, and White has F7 and a ladder escape in the K11 corner and plays H4 comes up frequently in an opening I used to play a lot, and still play whenever (rarely now) my opponents allow me to be the side I like in it.

I strongly recommend that Black play j2, to force White to choose between i3 and h5, before Black chooses between g5 and g6. See next variation.]
;W[f5];B[i4]
C[Eric\:


White ladders toward the K11 corner connect, and J2 was forcing anyway, so the only thing this can possibly help with, is a potential peep at F9.

https\://www.hexwiki.net/index.php/Peep]
;W[i3];B[k2]C[Eric\:

This loses the forcing move at J2.];W[j3]
C[Peter\: White should have tidied up at i2 first. 

https\://www.hexwiki.net/index.php/Tidiness]
;B[k3];W[j4];B[k4];W[i6];B[j6]
C[Eric\:


Now Black's play along the K-edge can't even help even in the 1 way it previously might possibly have helped\: 

against a peep at F9]
;W[i8];B[j8]
C[Eric\:

Black just passed, which is _far worse_ than bad forcing exchanges.]
;W[i10]
C[Eric\:

White could have just played d6, since j8 doesn't even threaten to disconnect White (j7 or i10).]
;B[d6];W[e4](;B[d4]C[Eric\: See next variation for c5.];W[d5];B[b6](;
W[c6]C[Eric\: White has an easy win at c3, see next variation.];B[b7];
W[d8];B[a10]
C[Peter\: Better d7 or c8. They connect Black to the 11-edge.];W[b10];
B[a11]
C[Peter\: This is locally losing, as White now connects. d7 would have still worked.

However, White was winning anyway via c3.]
;W[b8];B[c7];W[e6];B[resign])(;W[c3]
C[Eric\:

White no longer needs anything towards the A11 corner, since F3 would foil any attempt by Black to get a ladder escape.]
;B[b5];W[e2];B[e3];W[f2];B[f3];W[g2];B[h3];W[i1];B[i2];W[j1];B[j2];W[k1]
))(;B[c5]
C[Eric\:


Since Black no longer has a forcing move at J2, Black can't do enough with a height-3 ladder along the 1-edge, so this would be Black's best chance.

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

However, I now see that even this isn't enough for Black, since White can keep Black's height-3 ladder from connecting _without_ giving up any of F5's connection to the K-edge, so a switchback via D9 will still work for White.]
))(;B[j2]
C[Eric\: 

This forces White to choose between i3 and h5, before Black chooses between g5 and g6.]
))
