(;GM[1]FF[4]SZ[19]
GN[B can kill]
PC[http://senseis.xmp.net/?RTGProblem37/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem37/Solution

B can kill]
PL[B]

AB[an][bn][co][do][eo][fo][ap][bp][fp][bq][fq][gq][gr][bs][gs]
AW[cp][dp][ep][aq][ar][br][cr][er][fr][cs][es][fs]

;B[dr]C[B1]MN[1]
;W[dq]C[W2]MN[2]
;B[cq]C[B3]MN[3]
;W[ds]C[W4]MN[4]
;B[eq]C[B5]MN[5]

;
)
