(;GM[1]FF[4]SZ[19]
GN[forcing first, part 1]
PC[http://senseis.xmp.net/?TsumegoFromGames141/Attempts]AP[GoWiki:2009]
DT[2009-08-19]
C[Diagram from http://senseis.xmp.net/?TsumegoFromGames141/Attempts

forcing first, part 1]
PL[W]

AB[dc][ce][pe][qe][pg][mi][qi][nj][rj][ck][nk][rk][ml][ql][im][qm][fn][hn][in][ln][go][io][jo][ko][qo][cp][jp][pp][qp][rp][eq][kq][lq][mq][nq][oq][rq][sr]
AW[hc][kc][pc][nd][qd][oi][mk][pk][qk][hl][nl][ol][rl][gm][hm][gn][pn][ho][lo][mo][oo][po][hp][ip][op][hq][jq][pq][qq][kr][lr][mr][nr][or][qr][rr]

;W[qn]C[W1]MN[1]
;B[rn]C[B2]MN[2]
;W[pm]C[W3]MN[3]
;B[rm]C[B4]MN[4]
;W[mm]C[W5]MN[5]
;B[ll]C[B6]MN[6]
;W[nn]C[W7]MN[7]
;B[np]C[B8]MN[8]
;W[mn]C[W9]MN[9]
;B[om]C[B10]MN[10]

;
)
