(;GM[1]FF[4]SZ[19]
GN[Solution 4]
PC[https://senseis.xmp.net/?BeginnerExercise147/Solution]AP[GoWiki:2009]
DT[2024-09-12]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise147/Solution

Solution 4]
PL[B]

AB[pm][qm][rm][on][qn][sn][oo][ro][op][pq][nr][or][pr]
AW[po][so][pp][qp][rp][sp][qq][qr]

;B[sr]C[B1]MN[1]
;W[rr]C[W2]MN[2]
;B[qs]C[B3]MN[3]

;
)
