I did not find this basic shape using pattern search... Hope its not duplicate. Comments welcome.
(;AB[ls]AB[lr]AB[lq]AB[jq]AB[kq]AB[iq]AB[hr]AW[gr]AW[gq]AW[gp]AW[hp]AW[ip]AW[jp]AW[kp]AW[lp]AW[mp]AW[mq]AW[mr]AW[ms]AW[jr]C[Black to play.]AP[goproblems]
(;B[is]C[Ouch ... ])
(;B[ks]C[Ouch...])
(;B[ir];W[hs];B[js];W[kr])
(;B[kr];W[js])
(;B[hs];W[js])
(;B[js];W[is]
(;B[ks];W[hs])
(;B[ir];W[ks]
(;B[hs];W[js])
(;B[kr];W[js]))
(;B[kr];W[ks]C[Ko. The best black can get.RIGHT])
(;B[hs];W[ks])))