(;AB[pr]AB[pq]AB[sq]AB[rp]AB[rs]AW[or]AW[oq]AW[ns]AW[nr]AW[op]AW[po]AW[ro]AW[so]AW[qo]C[W to move]AP[goproblems]
(;W[ps]
(;B[qq];W[rr];B[sr];W[qs];B[qr];W[ss]C[nice :)RIGHT])
(;B[qs]
(;W[qr];B[os]
(;W[qq];B[qp];W[pp];B[ps];W[rr]C[nice! :) (this is the most interesting ressistance, but b could get a ko, see naviagate solution)CHOICERIGHT])
(;W[qp];B[qq])
(;W[rr];B[sr]C[ko]LB[ps:1]))
(;W[qp];B[qq]MA[rr]MA[sr])
(;W[qq];B[qp]
(;W[qr];B[pp]
(;W[rr];B[os]C[ko])
(;W[os];B[rr]))
(;W[pp];B[qr]))
(;W[rr];B[sr]
(;W[qr];B[os]C[ko])
(;W[qq];B[qr]))))
(;W[qp];B[qq])
(;W[qq];B[qp])
(;W[qr];B[qq])
(;W[rr];B[qr]
(;W[sr];B[rq]MA[qp]MA[ps])
(;W[ps];B[sr])
(;W[qp];B[sr])))