(;GM[1]FF[4]SZ[19]
GN[Example 1: white needs a and e to live, but cannot play both.]
PC[http://senseis.xmp.net/?KyuExercise88/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise88/Attempts

Example 1: white needs a and e to live, but cannot play both.]
PL[B]

AB[in][jn][kn][go][ho][lo][mo][fq][gq][hq][lq][mq][nq][fr][nr][fs][ns]
AW[ip][kp][iq][jq][kq][gr][hr][lr][mr][gs][ms]
LB[jo:e][ir:a]

;B[jr]C[B1]MN[1]
;W[is]C[W2]MN[2]
;B[kr]C[B3]MN[3]

;LB[jo:e][ir:a]
)
