(;AP[Hexon:0.0]FF[4]GM[11]SZ[11]C[2022/12/09

Black\: Mason
White\: Eric

Handicap\: 1.5

White wins.
]PL[B]
;B[e7]
;B[h7]
;W[h9]
;B[j9]
;W[i10]
(;B[j10]C[Eric\: Black should also consider i9, see next variation.]
 ;W[j8]
 (;B[i8]C[Eric\: Better g9, see next variation.]
  ;W[i9]
  ;B[g9]
  ;W[e10]
  ;B[d9]
  ;W[h2]
  ;B[c4]
  ;W[e6]
  ;B[c7]
  ;W[b10]
  ;B[f10]
  ;W[c5]
  ;B[e4]
  ;W[d6]
  (;B[i2]C[Eric\: See the variation, which was also played.]
   ;B[resign]C[Eric\:

Black resigns, due to whiteG5, which gets a 3rd row ladder that White escapes.])
  (;B[g5]C[Eric\:

so we play a variation now.]
   ;W[g1]
   (;B[f5]C[Eric\: Better g2 or f4, see next variations.]
    ;W[f4]
    ;B[e5]
    ;W[d3]
    ;B[d4]
    ;W[c3]
    ;B[f2]
    ;W[f1]
    (;B[i2]C[Eric\: Black should first get g2 and b5, see next variation.]
     (;W[h3]C[Eric\: Maybe h6 was better, see next variation.]
      ;B[i3]
      ;W[h6]
      ;B[h5]
      ;W[c11]
      ;B[f7]
      ;W[resign])
     (;W[h6]C[Eric\:

It's not enough (even blackH3 and blackH4 both still win), and shouldn't even work locally - due to rest of this variation - but I should've tried this directly instead of H3 first, to hopefully avoid H8 being a forcing move for Black.]
      ;B[i4]C[Eric\:

blackH3 and blackH4 win even if Black just defends the G8+H8 bridge, but this move connects to the 1-edge in a way which results in blackH8 still being a forcing move.]
      ;W[h4]
      ;B[h5]
      ;W[i3]
      ;B[g2]
      ;W[h1]
      ;B[h3]))
    (;B[g2]C[Eric\:


Black should probably get this peep,

https\://www.hexwiki.net/index.php/Peep

to make sure F3 can't help me.]
     ;W[h1]
     ;B[b5]C[Eric\:


Also, this could help Black near D8.

(It threatens a ladder escape fork at B2/C2, and also leaves E6 no longer connected to the A-edge.)]))
   (;B[g2]C[Eric\:


This is an automatic peep.

https\://www.hexwiki.net/index.php/Peep#Automatic_peep

Due to it, I believe Black should be able to keep the whole A1 corner.])
   (;B[f4]C[Eric\:


(Black should play G2 instead of either, but)

I believe this would've been better than F5, since although it gives me a better bridge intrusion, I believe it connects to the 1-edge.])))
 (;B[g9]C[Eric\:

Black's normal continuation is as if the i10-j10 exchange had not happened.  (In return for giving Black the chance to change up, if Black doesn't then the i8 intrusion would cost Black Black's ladder escape.)]))
(;B[i9]C[Eric\:

Black can change up now, if Black wants.]
 ;W[h10]
 ;B[j10]
 ;W[i8]
 ;B[j6]C[Eric\:

The point is, White is forced into the closed variation.  If Black had played i9 instead of j9, then White could instead choose the open variation.  (i8 instead of h10)]))
