(;AP[HexGui:0.10.GIT]
C[2021/11/26

Black\: Frank
White\: Peter

Black wins.
]FF[4]GM[11]PL[B]
SZ[11];B[b2];W[f6];B[h7];W[h8];B[i7];W[i8]
C[Eric\:

I suggest i9 instead, due to my comment on the next move.](;
B[j7]C[Eric\: Better g8, see next variation.];W[j8];B[g8];W[e9];B[f10];
W[h4];B[c8];W[d7];B[c7];W[d5];B[f5];W[h3];B[e5](;W[d6]
C[Mohex\: losing move. e3 was winning, see 3rd variation.];B[g5](;W[g6]
C[Eric\: Would h2 work? See next variation.];B[h5];W[h6];B[j5];W[i5];
B[j4];W[h2];B[i4];W[j2];B[f3];W[resign])(;W[h2]
C[Eric\:


Would this work?

I'm guessing no, since I seem to remember Peter's comment saying D6 was losing.

Mohex\: Indeed, Black h5 now wins.]
;B[h5];W[f3];B[i4];W[j2];B[e4];W[e3];B[c4];W[d4];B[b6];W[b7];B[c6];W[c9]
;B[d8];W[f7];B[d9]))(;W[f7]
C[Variation not played. 

Mohex\: this is also losing.
];B[b7];W[e3](;
B[c4]
C[Black loses the win (now White is winning). c5 is winning, see next variation.]
;W[b6];B[f3];W[d6])(;B[c5];W[c4];B[d4];W[d3];B[g3]))(;W[e3]
C[Mohex\: winning.
];B[f3];W[f2];B[g2];W[e4];B[f4];W[f7];B[d6];W[c9];
B[j4];W[h6])(;W[e4]
C[Eric\:

Does this also win for White?

I'm guessing no, since from the Mohex lines, it seems to me that White needs b7 to not be forcing against the a1 corner.

Mohex\: no, g3 is now winning for Black.

Peter\: The reason seems to be that after g3, h2 is then insufficiently forcing.]
;B[g3]))(;B[g8]C[Eric\:

I would play here first, so that](;W[f10]
C[Eric\:

if White plays here, then];B[j6]
C[Eric\:


Black gets this.

(ladder escape fork at J9)])(;W[e9]
C[Eric\:

If White plays this instead, then Black can still get J6 at the cost of E10.]
;B[j6];W[e10];B[f10])))
