(;AP[Hexon:0.0]FF[4]GM[11]SZ[11]C[2023/04/14

Black\: Jack
White\: Peter

White wins.
]PL[B]
;B[b4]
;W[d8]
;B[h7]
;W[h4]
;B[e7]
;W[e8]
;B[g6]
;W[f7]
;B[f6]
;W[g7]
;B[h6]
;W[g8]
;B[i8]
;W[h8]
;B[i7]
;W[h9]
;B[j9]C[Peter\: Bad move, because it gives White a free ladder escape at j8. Black should have played i9.]
;W[f5]
;B[d6]
;W[d5]
;B[e5]
;W[f3]
;B[g4]
;W[h2]
;B[g2]
;W[g3]
;B[f4]C[Eric\:

This loses.  C5 was  winning; see the variation at move 31.]
(;W[g5]C[Eric\:  This loses.]
 ;B[j2]
 ;W[i3]
 (;B[e4]C[Peter\: Losing move. c5 was winning, see the next variation (a4 switchback).]
  ;W[e3]
  (;B[c5]C[Peter\: White's preparation in the h9 area is now useless, but it was going to be used if Black played as in the next variation.]
   ;W[c4]C[Peter\: The win is more obvious if White plays d4 first, but this also works.]
   ;B[d3]
   ;W[d4])
  (;B[d4]
   ;W[d3]
   ;B[c2]
   ;W[c4]
   ;B[b5]
   ;W[c5]
   ;B[b6]
   ;W[c6]
   ;B[b7]
   ;W[c7]
   ;B[b8]
   ;W[b10]))
 (;B[c5]
  ;W[d4]
  ;B[c6]
  ;W[c4]
  ;B[b5]
  ;W[c2]
  ;B[c3]
  ;W[d2]
  ;B[e3]))
(;W[j8]C[Eric\:

White can delay this move, but playing this move first makes it more clear that the overlap at A8 doesn't matter.]
 ;B[i9]
 ;W[d4]C[Eric\:

J8 connected H2 to the K-edge.]))
