(;AB[rq]AB[qq]AW[pq]AW[pr]AW[qr]AW[oq]AW[nr]AB[np]AB[nq]AB[op]AB[pp]AW[qp]AW[rp]AW[ro]AW[rn]AB[rm]AB[qm]AB[qn]AB[qo]AB[on]AW[mq]AW[mp]AW[mo]AB[rr]LB[rr:1]C[Black just played 1. Best way to defend your corner?]AB[rk]AW[kq]AP[goproblems]
(;W[rs];B[qs]
(;W[sr];B[ss]C[You can do better than ko.])
(;W[ps];B[sr]
(;W[sp];B[sn]
(;W[qs];B[os]
(;W[mr];B[sm]C[White dies.])
(;W[or];B[mr]
(;W[lr];B[sm]C[White dies.])
(;W[ns];B[ms];W[lr];B[sm]C[White dies.])))
(;W[os];B[sm]C[White dies.]))
(;W[so];B[sq];W[sm];B[sl]C[White can do better than an approach ko.])
(;W[qs];B[os]
(;W[sp];B[sn];W[or];B[mr]
(;W[lr];B[sm]C[White dies.])
(;W[ns];B[ms];W[lr];B[sm]C[White dies.]))
(;W[or];B[mr]
(;W[ns];B[ms];W[lr];B[sp]C[White dies.])
(;W[sp];B[sn]
(;W[lr];B[sm]C[White dies.])
(;W[ns];B[ms];W[lr];B[sm]C[White dies.]))
(;W[lr];B[sp]))
(;W[so];B[sq]
(;W[sm];B[sl]C[W can do better than an approach ko.])
(;W[or];B[mr]
(;W[sm];B[sl])
(;W[lr];B[sm])
(;W[ns];B[ms];W[sm];B[sl]C[W can do better than an approach ko.])))
(;W[ns];B[sp])))
(;W[sq];B[ss];W[ps];B[os]C[Very bad ko for white.])
(;W[sp];B[ss]
(;W[sq];B[sn];W[ps];B[os])
(;W[ps];B[os])))
(;W[sq];B[sr]
(;W[so];B[sp]C[White can do better than an approach ko.])
(;W[rs];B[sp]))
(;W[sr];B[sq]
(;W[rs];B[ss]C[White can do better than a ko.])
(;W[sp];B[ss]C[White dies.]))
(;W[sp]
(;B[sn]
(;W[rs];B[qs]
(;W[sr];B[ss]C[White can do better than a ko.])
(;W[ps];B[sr]
(;W[or];B[sm]C[White dies.])
(;W[mr];B[sm]C[White dies.])
(;W[qs];B[os]
(;W[ss];B[or])
(;W[or];B[mr]
(;W[lr];B[sm]C[White dies.])
(;W[ns];B[ms]
(;W[ss];B[os])
(;W[lr];B[sm]C[White dies.])))
(;W[mr];B[sm]C[White dies.])
(;W[ns];B[sm]C[White dies.]))))
(;W[sq];B[sr])
(;W[sr]
(;B[rs]
(;W[qs]C[Starting with T4 was the only way to save your stones. Use Navigate Solution to explore all the wrong variations.RIGHT])
(;W[sq]C[Starting with T4 was the only way to save your stones. Use Navigate Solution to explore all the wrong variations.RIGHT]))
(;B[qs]
(;W[sq];B[rs];W[ps]C[Starting with T4 was the only way to save your stones. Use Navigate Solution to explore all the wrong variations.RIGHT])
(;W[rs];B[ss]C[White can do better than ko.])
(;W[ps]C[Starting with T4 was the only way to save your stones. Use Navigate Solution to explore all the wrong variations.RIGHT])
(;W[os];B[ss]C[White can do better than ko.]))))
(;B[sr];W[qs]C[RIGHT])
(;B[rs];W[qs]C[RIGHT])
(;B[qs];W[sr]
(;B[ps];W[or]
(;B[mr];W[sq]C[RIGHT])
(;B[rs];W[sq]C[RIGHT]))
(;B[rs];W[sq]C[RIGHT]))))