(;GM[1]FF[4]SZ[19]
GN[Idea 3, black takes corner]
PC[http://senseis.xmp.net/?PositionalJudgementProblem2/Discussion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?PositionalJudgementProblem2/Discussion

Idea 3, black takes corner]
PL[B]

AB[bk][gk][ik][lk][mk][qk][il][jl][kl][ol][pl][gm][hm][nm][an][in][mn][nn][ao][io][ko][lo][po][jp][kp][kq][pq][kr]
AW[jk][kk][nk][ok][cl][ll][ml][nl][im][jm][km][lm][mm][cn][hn][bo][ho][ap][dp][ip][lp][hq][jq][lq][ir][jr]
LB[cp:f][br:a][cr:d][bs:e][cs:c][ds:b]

;B[bp]C[B1]MN[1]
;W[am]C[W2]MN[2]
;B[aq]C[B3]MN[3]
;W[bn]C[W4]MN[4]
;W[bl]C[W6]MN[6]
;B[cq]C[B7]MN[7]
;W[dq]C[W8]MN[8]
;B[dr]C[B9]MN[9]
;W[er]C[W10]MN[10]

;LB[cp:f][br:a][cr:d][bs:e][cs:c][ds:b]
)
