(;GM[1]FF[4]SZ[19]
GN[a and b miai for life]
PC[http://senseis.xmp.net/?RTGProblem23/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?RTGProblem23/Solution

a and b miai for life]
PL[W]

AB[in][kn][mn][on][pn][qn][rn][oo][ip][iq][jq][kq][nq][rq][sq][mr][qr][sr][qs][rs]
AW[po][qo][ro][jp][kp][lp][mp][np][op][pp][rp][sp][pq][qq][pr][ps]
LB[oq:a][or:b]

;W[nr]C[W1]MN[1]
;B[mq]C[B2]MN[2]
;W[ns]C[W3]MN[3]

;LB[oq:a][or:b]
)
