(;AB[hc]AB[hb]AB[id]AB[jd]AB[ld]AB[kd]AB[md]AB[mc]AW[kb]AW[kc]AW[lc]AW[mb]AW[ib]AW[ic]C[Black to kill]AB[gc]SZ[13]AB[ge]AW[eb]AW[ed]AP[goproblems]
(;B[la]
(;W[jc]
(;B[lb];W[ka]
(;B[ia]LB[ja:A]C[Correct. White can't move at K13 by Damezumari.RIGHT])
(;B[ma];W[mb]))
(;B[ja];W[ia]
(;B[lb];W[ka])
(;B[ka];W[lb]C[It's seki.]))
(;B[ia];W[ja]
(;B[lb];W[ha]
(;B[ma];W[fa])
(;B[ga];W[ka]
(;B[ia];W[ma])
(;B[ma];W[mb])))
(;B[ka];W[ha];B[ga];W[ia]))
(;B[ka];W[ja])
(;B[ma];W[lb]
(;B[ia];W[ja])
(;B[ja];W[ia];B[ka];W[jb]C[White has got four territories.])))
(;W[ka];B[ia];W[ja];B[jc];W[ha];B[jb];W[fa];B[ia];W[ib]))
(;B[jc];W[la])
(;B[ia];W[la])
(;B[ja];W[la])
(;B[ka];W[la])
(;B[lb];W[la]))