(;GM[1]FF[4]SZ[19]
GN[Solution 2]
PC[https://senseis.xmp.net/?KyuExercise181/Solution]AP[GoWiki:2009]
DT[2022-12-21]
C[Diagram from https://senseis.xmp.net/?KyuExercise181/Solution

Solution 2]
PL[B]

AB[bn][bo][co][do][ep][eq][er][fr]
AW[bp][cq][dq][dr][bs]

;B[ar]C[B1]MN[1]
;W[br]C[W2]MN[2]
;B[ap]C[B3]MN[3]
;W[aq]C[W4]MN[4]

;
)
