(;GM[1]FF[4]SZ[19]
GN[White chooses this variation]
PC[http://senseis.xmp.net/?KyuExercise26/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise26/Solution

White chooses this variation]
PL[B]

AB[cf][cg][bh][dh][ci][dj][ej][fj][bl][bm][bn][bo][co][do][ep]
AW[ad][bd][cd][de][df][dg][eh][gh][bi][gi][cj][bk][dk][ek][fk][gk][cl][cm][cn][dn][en][eo]

;B[ai]C[B1]MN[1]
;W[ak]C[W2]MN[2]

;
)
