(;AB[gr]AB[hq]AB[iq]AB[ir]AB[hs]AB[lq]AB[lp]AB[mp]AW[ko]AW[lo]AB[ln]AW[jp]AW[ip]AW[gp]AW[gq]AW[fr]AW[eq]AW[mn]AB[kn]AB[nn]AB[nm]AB[lm]AB[ml]AW[no]AW[np]AW[nq]AW[mq]AB[mr]AB[nr]AB[oq]AB[pr]AB[ps]AB[qr]AW[qs]AW[rs]AW[rr]AW[qq]AW[op]AB[mo]AW[ro]AB[hp]AW[ho]AW[hn]AW[im]AW[jn]AB[jm]AB[jl]AW[pp]AW[rp]C[white has an endgame tesuji to reduce the black side]AP[goproblems]
(;W[kr]
(;B[kq]
(;W[jq];B[jr];W[lr];B[mm];W[or];B[os];W[pq];B[ks];W[or]C[picnic ko to capture some stonesRIGHT])
(;W[lr];B[jr]
(;W[or];B[os]
(;W[jq];B[mm];W[pq];B[ks];W[or]C[RIGHT])
(;W[pq];B[ks]LB[mm:A]C[ok, but b gets an extra point at ARIGHT]))
(;W[jq];B[mm];W[or];B[os];W[pq];B[ks];W[or]C[RIGHT]))
(;W[jr];B[jq]
(;W[lr];B[or])
(;W[or];B[os]
(;W[pq];B[lr])
(;W[lr];B[pq])))
(;W[or]C[NOTTHIS]))
(;B[lr]C[reference variation];W[kq];B[js];W[ks];B[jr];W[fs];B[gs]C[white is not unhappy with this resultRIGHT]))
(;W[kq];B[kr])
(;W[jq];B[kr]C[not bad, but white can do better])
(;W[jr];B[jq];W[kr];B[lr])
(;W[or]C[NOTTHIS])
(;W[lr];B[kr])
(;W[os];B[jq])
(;W[pq];B[or]))