(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[https://senseis.xmp.net/?BeginnerExercise40/Solution]AP[GoWiki:2009]
DT[2024-08-30]
C[Diagram from https://senseis.xmp.net/?BeginnerExercise40/Solution

Solution]
PL[B]

AB[ob][pb][qb][mc][nc][md][rd][le][re][lf][pf][qf][rf][lg][mg][ng][og][pg]
AW[rb][oc][pc][qc][rc][nd][qd][oe][pe][qe][mf][nf][of]
LB[pd:a]

;B[od]C[B1]MN[1]
;W[me]C[W2]MN[2]

;LB[pd:a]
)
