(;GM[1]FF[4]SZ[19]
GN[Correct Var 4]
PC[https://senseis.xmp.net/?OD1PAug6Problem/Solution]AP[GoWiki:2009]
DT[2019-04-02]
C[Diagram from https://senseis.xmp.net/?OD1PAug6Problem/Solution

Correct Var 4]
PL[B]

AB[pm][qm][pn][po][qp][qq][or][rr]
AW[qn][no][qo][ro][pp][mq][nq][pq][pr][qr]

;B[sp]C[B1]MN[1]
;W[so]C[W2]MN[2]
;B[rp]C[B3]MN[3]
;W[sq]C[W4]MN[4]
;B[rq]C[B5]MN[5]
;W[sr]C[W6]MN[6]
;B[ss]C[B7]MN[7]

;
)
