(;GM[1]FF[4]SZ[19]
GN[A straightforward approach]
PC[https://senseis.xmp.net/?Imagist/DifficultProblem3Attempts]AP[GoWiki:2009]
DT[2019-12-24]
C[Diagram from https://senseis.xmp.net/?Imagist/DifficultProblem3Attempts

A straightforward approach]
PL[B]

AB[mm][nm][om][ln][on][co][lo][no][cp][dp][ep][fp][lp][mp][bq][cq][fq][jq][kq][lq][fr][gr][ir][lr][fs][hs][is][ls]
AW[dm][km][lm][cn][kn][mn][bo][do][eo][fo][ho][ko][oo][bp][gp][jp][kp][np][op][qp][aq][dq][eq][gq][hq][iq][mq][br][cr][dr][hr][jr][mr][or][as][bs][ks][ms]

;B[nn]C[B1]MN[1]
;W[er]C[W2]MN[2]
;B[mo]C[B3]MN[3]
;W[es]C[W4]MN[4]
;B[kr]C[B5]MN[5]
;W[gs]C[W6]MN[6]

;
)
