(;AP[Hexon:0.0]FF[4]GM[11]SZ[6]C[2022/11/18

Black\: Eric
White\: Mason

Black wins.
]PL[B]
;B[a4]
;W[swap-pieces]
;B[e2]
(;W[d5]C[Eric\: See next variation for White's only winning move.]
 ;B[b5]
 ;W[c4]
 ;B[b4]
 ;W[c3]
 ;B[b3]
 ;W[resign])
(;W[d3]C[Eric\:

According to bobson8, this is White's only winning move here.]))
