A1

AA
 A

b2

AA
bA
bb

C3

AA
bA
bbC
 CC

a4

AA
bA
bbC
 CC
 aa
  a

B5

AA
bA
bbC
 CC
 aa
BBa
B

c6

 cAA
ccbA
  bbC
   CC
   aa
  BBa
  B

A7

AAcAA
AccbA
   bbC
    CC
    aa
   BBa
   B

b8

AAcAA
AccbA
bb bbC
 b  CC
    aa
   BBa
   B

C9

 AAcAA
 AccbA
Cbb bbC
CCb  CC
     aa
    BBa
    B

a10

 AAcAA
 AccbA
Cbb bbC
CCb  CC
     aa
   aBBa
  aaB

B11

 AAcAA
 AccbA
Cbb bbC
CCb  CC
 B   aa
 BBaBBa
  aaB

c12

 AAcAA
 AccbA
Cbb bbC
CCbc CC
 Bcc aa
 BBaBBa
  aaB

A13

Player 1 must pass.