(;GM[1]FF[4]SZ[19]
GN[Problem #124 of Igo Hatsuyoron]
PC[http://www.go4go.net/]
AP[GoWiki:2009]
DT[2023-12-03]
C[Diagram from http://www.go4go.net/

Problem #124 of Igo Hatsuyoron]
PL[B]

AB[ma][pa][ob][oc][pc][qc][rc][qg][qi]
AW[ra][lb][mb][pb][qb][rb][nc][md][od][rd][qe][pf]

;B[sc]C[B1]MN[1]
;W[rf]C[W2]MN[2]
;B[nb]C[B3]MN[3]
;W[na]C[W4]MN[4]
;B[qa]C[B5]MN[5]

;
)
