(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[https://senseis.xmp.net/?BeginnerExercise256/Solution]AP[GoWiki:2009]
DT[2024-09-18]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise256/Solution

Solution]
PL[B]

AB[ia][cb][ib][cc][hc][ic][cd][id][ce][de][ee][fe][ge][he][ie]
AW[fa][ha][db][eb][hb][dc][gc][dd][fd][gd][hd]
LB[fb:a]

;B[gb]C[B1]MN[1]
;W[ed]C[W2]MN[2]
;B[ga]C[B3]MN[3]

;LB[fb:a]
)
