(;GM[1]FF[4]SZ[19]
GN[White kills]
PC[https://senseis.xmp.net/?RTGProblem7/Solution]AP[GoWiki:2009]
DT[2023-02-09]
C[Diagram from https://senseis.xmp.net/?RTGProblem7/Solution

White kills]
PL[W]

AB[pn][qn][oo][qo][pp][qp][rp][oq][rq][or][sr]
AW[nl][pl][rl][mm][pm][rm][nn][rn][so][np][op][sp][lq][nq][sq][nr]
LB[on:a][rs:b]

;W[qr]C[W1]MN[1]
;B[rr]C[B2]MN[2]
;W[ps]C[W3]MN[3]

;LB[on:a][rs:b]
)
