(;SZ[19]AW[ib]AW[qb]AW[hc]AW[oc]AW[pc]AW[id]AW[jd]AW[ld]AW[qd]AW[le]AW[ne]AW[jf]AW[mf]AB[jb]AB[ob]AB[pb]AB[jc]AB[lc]AB[mc]AB[nc]AB[kd]AB[me]LB[jb:3]LB[kd:1]LB[le:2]C[Black tries to live with 1 and 3. What can white do?]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]PW[White]PB[Black]PL[W]
(;W[pa];B[na]
(;W[mb];B[lb]
(;W[kc];B[ma];W[ka];B[ja]C[White cannot connect. Black is alive])
(;W[ja];B[ka]TR[ma]TR[kc]C[Marked intersections are miai for 2 eyes.])
(;W[ma];B[kc]C[Black is alive]))
(;W[kc];B[mb]C[Black is alive])
(;W[kb];B[ka]C[Black is alive])
(;W[qa]
(;B[la]C[CHOICE]
(;W[mb];B[lb]
(;W[ja]C[RIGHT])
(;W[kc]C[RIGHT]))
(;W[kb];B[mb]
(;W[kc];B[oa]C[Black is alive])
(;W[oa];B[kc]C[Black is alive]))
(;W[ja];B[mb]
(;W[kb];B[ka];W[kc];B[lb]C[Black is alive])
(;W[oa];B[ka]C[Black is alive]))
(;W[kc];B[mb]
(;W[kb];B[oa]C[Black is alive])
(;W[oa];B[kb]C[Black is alive])))
(;B[ja]C[CHOICE]
(;W[kc];B[kb]
(;W[la]C[RIGHT])
(;W[nb];B[mb];W[la]C[ Black is deadRIGHT]))
(;W[la];B[lb]
(;W[kc]C[RIGHT])
(;W[nb]C[RIGHT])
(;W[ma];B[kc]
(;W[nb];B[mb]
(;W[ka];B[kb]C[Black is alive])
(;W[oa];B[ka]C[Black is alive]))
(;W[ka];B[nb]C[Black is alive]))
(;W[ka];B[nb]
(;W[ma];B[kc]C[Black is alive])
(;W[kc];B[ma]C[Black is alive]))))
(;B[ka];W[kc];B[lb];W[ma]C[RIGHT]))
(;W[la];B[ka]
(;W[qa];B[lb]C[Black is alive])
(;W[ma];B[lb]C[Black is alive])))
(;W[la];B[ka]
(;W[na];B[kc]
(;W[nb];B[mb]C[Black is alive])
(;W[mb];B[nb]C[Black is alive]))
(;W[kc];B[na];W[pa];B[lb]C[Black is alive]))
(;W[ma];B[na]
(;W[ka];B[la]C[Black is alive])
(;W[la];B[ka]C[Black is alive]))
(;W[kb];B[ka]
(;W[kc];B[lb]C[Black is alive])
(;W[la];B[ja]
(;W[kc];B[lb]C[Black is alive])
(;W[lb];B[mb]C[Black is alive])
(;W[mb];B[lb]C[Black is alive])
(;W[pa];B[na]C[Black is alive]))
(;W[pa];B[na]C[Black is alive])
(;W[lb];B[mb]C[Black is alive]))
(;W[kc];B[na]
(;W[mb];B[lb]
(;W[pa];B[ma]C[Black is alive];W[ka];B[ja]C[White cannot connect. Black is alive])
(;W[ma];B[pa]C[Black is alive]))
(;W[kb];B[ka]C[Black is alive])
(;W[pa];B[mb]C[Black is alive])))