(;AB[qq]AB[qr]AB[qp]AB[rp]AW[ro]AW[qo]AW[po]AW[pp]AW[pq]AW[pr]AW[nr]AW[rm]AW[rq]C[A proverb say that the L-Group is dead. However, White did not know this and hastefully plays the marked stone without thinking. What does Black have in the corner now?FORCE]TR[rq]LB[ks:Nothing]LB[kq:Ko Threats]LB[ko:Ko]LB[km:Seki]LB[kk:Life]AP[goproblems](;B[kk];W[jk]C[Restore life to the Black group!](;B[rr](;W[sq];B[sr];W[qs];B[rs]C[Right! More stones isn't always better!RIGHT])(;W[qs];B[rs];W[sq];B[sr]C[Right! More stones isnt always better!RIGHT])(;W[rs];B[qs];W[sq](;B[sr]C[Right! More stones isnt always better.RIGHT])(;B[sp]C[Right! More stones isnt always better!RIGHT])))(;B[rs](;W[sq];B[sr];W[sp])(;W[sr];B[rr];W[sq]))(;B[sr];W[rs](;B[rr];W[qs])(;B[qs];W[rr]))(;B[sq](;W[rr];B[rs];W[sr];B[ss];W[rr])(;W[rs](;B[rr];W[qs])(;B[qs];W[rr]))))(;B[km];W[jm]C[Okay, please show me the seki.];B[sr];W[rs];B[qs];W[rr];B[sp]C[Not a seki, once White fills the outside liberties, the Black group is in atari and a connect-and-die situation.]AW[ps]AW[so]TR[ps]TR[so])(;B[ko];W[jo]C[No... its not a ko.])(;B[kq];W[jq]C[Well... it's not just ko threats.])(;B[ks];W[js]C[Are you sure? Even if you think that Black cannot live, there is at least some ko threats. Please reconsider carefully.]))