(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[https://senseis.xmp.net/?BeginnerExercise271/Solution]AP[GoWiki:2009]
DT[2024-09-18]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise271/Solution

Solution]
PL[B]

AB[fa][fb][ac][ec][fc][ad][bd][cd][dd]
AW[ca][da][ab][eb][bc][cc][dc]
LB[ea:a]

;B[ba]C[B1]MN[1]
;W[bb]C[W2]MN[2]
;B[db]C[B3]MN[3]

;LB[ea:a]
)
