(;AP[Hexon:0.0]FF[4]GM[11]SZ[11]C[2022/10/07

Black\: Peter
White\: Frank

Black wins.
]PL[B]
;B[a4]
;W[d8]
;B[c7]
;W[d9]
;B[f8]
;W[h4]
;B[e7]
;W[f7]
;B[e8]
;W[g9]
;B[c9]
;W[c10]C[Eric\:

This should be C8.]
;B[b8]C[Eric\: Black should punish C10 by playing B7. (Black B10 would connect.)
]
;W[d5]
;B[e6]C[Eric\: good]
;W[f4]
;B[b6]
(;W[c4]C[Eric\: Better b5, see next variation.]
 ;B[a5]
 ;W[b3]
 ;B[a3]
 ;W[b1]
 ;B[b2]
 ;W[c1]
 ;B[c2]
 ;W[d1]
 ;B[d2]
 ;W[e1]
 ;B[f2]
 ;W[resign])
(;W[b5]C[Eric\:

This also loses, but makes Black need FAR more space.]
 ;B[g2]
 ;W[c5]
 ;B[g4]
 ;W[f5]
 ;B[g5]
 ;W[f6]
 ;B[h6]
 ;W[h5]
 ;B[g6]
 ;W[g7]
 ;B[h7]
 ;W[g8]
 ;B[i8]
 ;W[i7]
 ;B[h8]))
