Problem 9683 goproblems.com


Author	Trucid	Created	2007-01-20
Difficulty	3 dan (history)	Source	Scias 6d vs genjuro 4d on KGS
AVG solve time	46 sec	Stars	4.6 (10 votes)
User attempts	324 / 1663	Collections	N/A
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2007-01-20
Source	Scias 6d vs genjuro 4d on KGS
Stars	4.6 (10 votes)
Collections	N/A
Your attempts	N/A

(;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]))))