(;AP[Hexon:0.0]FF[4]GM[11]SZ[11]C[2023/01/27

Black\: Mason
White\: Thomas

Black wins.
]PL[B]
;B[a11]
;W[h4]
;B[d5]
;W[d3]
;B[b3]
;W[d4]C[Mason\: This is not joseki.

Peter\: What's the best way for Black to punish it, though? Perhaps b6?]
;B[f4]
;W[d7]
;B[g6]
(;W[h3]C[Peter\: This move is insufficiently forcing and lets Black connect via g5.

Perhaps f5 would have been better? See the next variation.]
 ;B[g5]C[Peter\: Black now has a (gigantic) template.

https\://www.mathstat.dal.ca/~selinger/templates/svg/template-6-z-2.svg]
 ;W[g7]
 ;B[f7]
 ;W[d10]
 ;B[d8]C[Peter\: e8 is simpler and uses less area.]
 ;W[c9]
 ;B[f9]
 ;W[f8]
 ;B[d9]
 ;W[e9]
 ;B[c10]
 ;W[resign])
(;W[f5]
 ;B[d6]
 ;W[d8]
 ;B[e6]
 ;W[f7]
 ;B[i5]
 ;W[h3]
 ;B[f6]
 ;W[e4]
 ;B[e5]
 ;W[g2]))
