(;AP[Hexon:0.0]FF[4]GM[11]SZ[11]C[2022/07/29

Black\: Scott
White\: Frank

Handicap\: 0.5

White wins.
]PL[B]
;B[f6]
;W[d10]
;B[f9]
;W[f8]
;B[d9]
;W[e7]
;B[d7]
;W[d8]
;B[b9]
;W[b10]
;B[c9]
;W[c10]
;B[e9]
;W[g10]
;B[f10]
;W[c8]
;B[b8]
;W[c6]
(;B[b6]C[Peter\: Bad move, because White can play at c5 (as White did), or even worse, d5!

Perhaps something like g6 is better for Black, see next variation.



Eric\:


More generally, B6 is star-decomposition dominated by B5\:  Black playing B5 is equivalent to Black playing _both_ B5 _and_ B6.

https\://www.hexwiki.net/index.php/Dominated_cell#Star_decomposition_domination

I agree with G6.]
 ;W[c5]
 ;B[c7]
 ;W[e6]
 ;B[d6]
 ;W[e4]
 ;B[e5]
 ;W[f4]
 ;B[f5]
 ;W[h3]
 ;B[i3]
 ;W[h4]
 (;B[j4]C[Peter\: Now White connects by using g10 to do a 3rd-to-5th row switchback.

If Black had not yielded, White would have escaped the ladder anyway, see e.g. next variation.]
  ;W[i4]
  ;B[j3]
  ;W[i5]
  ;B[j5]
  ;W[i6]
  ;B[j6]
  ;W[i7]
  ;B[j7]
  ;W[i9]
  ;B[i8]
  ;W[g9]
  ;B[resign])
 (;B[i4]
  ;W[g6]
  ;B[h5]
  ;W[g5]
  ;B[i7]
  ;W[g8]
  ;B[i6]
  ;W[h9]))
(;B[g6]
 ;W[h7]
 ;B[c7]
 ;W[e5]
 ;B[e6]
 ;W[g4]
 ;B[h4]
 ;W[i2]
 ;B[h3]
 ;W[h2]
 ;B[g3]
 ;W[g2]
 ;B[f3]
 ;W[f2]
 ;B[e3]
 ;W[e2]
 ;B[c3]
 ;W[d3]
 ;B[b5]
 ;W[a7]
 ;B[c5]
 ;W[d4]
 ;B[d5]))
