(;AB[se]AB[re]AB[qe]AB[qf]AB[pf]AB[pg]AB[ph]AB[pi]AB[pj]AB[qj]AB[ri]AW[sd]AW[rd]AW[qd]AW[pe]AW[pd]AW[ne]AW[of]AW[oj]AW[ok]AW[pk]AW[rk]AW[qk]AW[nh]AW[mj]AB[og]AW[ng]AW[rj]AW[rm]AW[sj]C[White to kill.]AP[goproblems]
(;W[si];B[rg])
(;W[rg];B[rh])
(;W[sg];B[rg])
(;W[rh];B[si]
(;W[sh];B[rg]TR[qi]TR[qh])
(;W[rg];B[qi]
(;W[rf];B[sg])
(;W[sf];B[sh])
(;W[sg]C[gote seki])
(;W[sh];B[rf]C[An interesting ko. But you can do better.]))
(;W[qi];B[qh]
(;W[sh];B[rg])
(;W[rg]C[:)RIGHT]))))