(;AP[Hexon:0.0]FF[4]GM[11]SZ[11]C[2022/08/19

Black\: Jia
White\: Frank

Handicap\: 0.5

Black wins.
]PL[B]
;B[i8]
;W[i9]
;B[g9]
;W[h4]
;B[g4]
;W[e4]
;B[f6]
;W[f9]C[Eric\:

Excellent move.

I had thought he position was very bad for White, until I clicked forward to here and saw this move.]
;B[f8]
;W[f10]
;B[e9]
(;W[f7]C[Eric\: Better c10, see next variation.]
 ;B[e7]
 ;W[e8]
 ;B[d8]
 ;W[d9]
 ;B[c9]
 ;W[b11]
 ;B[g6]
 ;W[g7]
 ;B[i6]
 ;W[h3]
 ;B[g3]
 (;W[f3]C[Eric\: Better f2, see next variation.]
  (;B[j4]C[Eric\: Better i5, see next variation.]
   ;W[g10]
   ;B[j9]
   ;W[j8]C[Eric\:

j9 can't help Black, so White got j8 for free.  Without this exchange, blackJ8 would've both threatened j9 and blocked a potential ladder from i7 towards k11,]
   ;B[g8]C[Eric\:

though if we assume Black's next move is here, then j8 also doesn't help White.]
   ;W[i5]C[Eric\:

In hindsight, I think this should've been at h6, to stop Black's A1-side group from connecting to Black's K11-side group, so that D11 might later work for White.]
   ;B[h6]C[Eric\:

I previously couldn't figure anything out about what should happen on the K11 part of the board, but now that I clicked forward to Black playing this move, I see that Black is winning now.]
   ;W[h1]
   (;B[h2]C[Eric\: j2 is faster, see next variation.]
    ;W[i1]
    ;B[i2]
    ;W[j1]
    ;B[k1]
    ;W[j2]
    ;B[k2]
    ;W[h5]
    ;B[j5]
    ;W[d11]
    ;B[c11]
    ;W[resign])
   (;B[j2]C[Eric\:

This is faster.]
    ;W[h2]
    ;B[i4]))
  (;B[i5]C[Eric\:

Since b11 is connected to the A-edge anyway (b7 to c5 to c3), i5 is strictly better than j4.]))
 (;W[f2]C[Eric\:

This would've been locally-ish strictly better, since it still escapes the B11 ladder.]
  ;B[e3]
  ;W[f3]
  ;B[a11]C[Eric\:

This line shows how it escapes the B11 ladder.]
  ;W[b10]
  ;B[a10]
  ;W[b9]
  ;B[a9]
  ;W[b8]
  ;B[a8]
  ;W[b7]
  ;B[a7]
  ;W[c5]
  ;B[b5]
  ;W[c3]))
(;W[c10]C[Eric\:

I think White should start with this, to hopefully avoid Black not answering it later.]))
