(;GM[1]FF[4]SZ[19]
GN[White 1 here instead of 7]
PC[http://senseis.xmp.net/?DoubleThreat/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?DoubleThreat/Solution

White 1 here instead of 7]
PL[W]

AB[oc][kd][ld][nd][od][pd][qd][me][ne][cf][dg][lg][dh][di][qi][ri][dj][lj][mj][nj][oj][pj][qj][ck][jk][kk][pk][cl][el][ll][lm][mm][qm][rm][sm][bn][mn][on][sn][bo][co][eo][fo][ho][qo][ro][cp][dp][fp][np][pp][bq][dq][gq][hq]
AW[mb][ob][fc][mc][nc][pc][qc][dd][md][ce][qf][cg][ch][kh][lh][mh][oh][qh][ci][cj][jj][kj][rj][bk][lk][mk][nk][ok][rk][bl][kl][ml][ol][pl][ql][rl][bm][nm][pm][cn][dn][en][pn][qn][rn][gp][cq][fq][br][cr][dr][er][gr][fs]

;W[nn]C[W1]MN[1]
;B[no]C[B2]MN[2]
;W[mo]C[W3]MN[3]
;B[kn]C[B4]MN[4]
;W[po]C[W5]MN[5]
;B[oo]C[B6]MN[6]
;W[qp]C[W7]MN[7]
;B[rp]C[B8]MN[8]
;W[qq]C[W9]MN[9]
;B[rq]C[B10]MN[10]

;
)
