Problem 12399 goproblems.com


Author	Lok	Created	2009-02-14
Difficulty	9 dan (history)	Source	N/A
AVG solve time	70 sec	Stars	5 (1 votes)
User attempts	34 / 177	Collections	Corner based
Genre	life and death	Your attempts	N/A
Similar problems
Created	2009-02-14
Source	N/A
Stars	5 (1 votes)
Collections	Corner based
Your attempts	N/A

(;SZ[19]AW[rl]AW[nn]AW[on]AW[pn]AW[qn]AW[rn]AW[mo]AW[qo]AW[mp]AW[mq]AW[nr]AW[qs]AB[oo]AB[ro]AB[qp]AB[sp]AB[qq]LB[ol:T]C[Can black live? Play elsewhere at T, if you think it is not possible.]GM[1]FF[4]CA[UTF-8]AP[CGoban:3]ST[2]RU[Japanese]KM[0.00] (;B[rs];W[sr] (;B[rr];W[sn] (;B[oq];W[pr] (;B[or];W[os] (;B[pq];W[ns] (;B[nq];W[mr] (;B[po]C[Well done!RIGHT]) (;B[qr];W[ps];B[po]C[RIGHT])) (;B[po];W[op] (;B[nq];W[mr] (;B[np]C[Well done!RIGHT]) (;B[qr];W[ps];B[np]C[RIGHT])) (;B[np];W[nq]) (;B[qr];W[ps] (;B[nq];W[mr];B[np]C[RIGHT]) (;B[np];W[nq]))) (;B[qr];W[ps] (;B[nq];W[mr];B[po]C[RIGHT]) (;B[po];W[op] (;B[nq];W[mr];B[np]C[RIGHT]) (;B[np];W[nq])))) (;B[qr];W[ps] (;B[pq];W[ns] (;B[nq];W[mr];B[po]C[RIGHT]) (;B[po];W[op] (;B[nq];W[mr];B[np]C[RIGHT]) (;B[np];W[nq]))) (;B[nq]C[NOTTHIS])) (;B[nq]C[NOTTHIS])) (;B[pq];W[or])) (;B[or];W[os] (;B[oq];W[pr]C[] (;B[pq];W[ns] (;B[nq];W[mr] (;B[po]C[Well done!RIGHT]) (;B[qr];W[ps])) (;B[po];W[op] (;B[nq];W[mr] (;B[np]C[Well done!RIGHT]) (;B[qr];W[ps])) (;B[np];W[nq]) (;B[qr];W[ps])) (;B[qr];W[ps])) (;B[qr];W[ps] (;B[pq];W[ns] (;B[nq];W[mr];B[po]C[RIGHT]) (;B[po];W[op] (;B[nq];W[mr];B[np]C[RIGHT]) (;B[np];W[nq]))) (;B[nq]C[NOTTHIS])) (;B[nq]C[NOTTHIS])) (;B[pr];W[ps]C[] (;B[oq];W[pp]) (;B[nq];W[oq]))) (;B[pr];W[ps] (;B[or];W[os] (;B[oq];W[pp]) (;B[nq];W[oq])) (;B[oq];W[pp];B[os];W[or])) (;B[sq]C[NOTTHIS]) (;B[rq]C[NOTTHIS];W[so];B[oq]C[Works too.])) (;B[qr];W[pr]C[] (;B[ps];W[or] (;B[rq];W[sn]TR[so]TR[sq]C[Dead]) (;B[rr];W[sn];B[sq];W[rp]C[Dead])) (;B[rq];W[sn]TR[so]TR[sq]C[Dead]) (;B[rr];W[sn];B[sq];W[rp]C[Dead])) (;B[pr];W[ps]C[];B[os];W[or]) (;B[ps];W[pr]C[];B[qr]) (;B[oq];W[pr] (;B[rr];W[sn]C[] (;B[or];W[os] (;B[pq];W[ns] (;B[nq];W[mr] (;B[po]C[Well done!RIGHT]) (;B[qr];W[ps])) (;B[po];W[op] (;B[nq];W[mr] (;B[np]C[Well done!RIGHT]) (;B[qr];W[ps])) (;B[np];W[nq]) (;B[qr];W[ps])) (;B[qr];W[ps])) (;B[qr];W[ps] (;B[pq];W[ns] (;B[nq];W[mr];B[po]C[RIGHT]) (;B[po];W[op] (;B[nq];W[mr];B[np]C[RIGHT]) (;B[np];W[nq]))) (;B[nq]C[NOTTHIS])) (;B[nq]C[NOTTHIS])) (;B[pq];W[or])) (;B[qr];W[or]C[Only one eye in the corner]) (;B[rq]C[NOTTHIS]) (;B[or];W[os] (;B[rr];W[sn]C[] (;B[pq];W[ns] (;B[nq];W[mr] (;B[po]C[Well done!RIGHT]) (;B[qr];W[ps])) (;B[po];W[op] (;B[nq];W[mr] (;B[np]C[Well done!RIGHT]) (;B[qr];W[ps])) (;B[np];W[nq]) (;B[qr];W[ps])) (;B[qr];W[ps])) (;B[qr];W[ps] (;B[pq];W[ns] (;B[nq];W[mr];B[po]C[RIGHT]) (;B[po];W[op] (;B[nq];W[mr];B[np]C[RIGHT]) (;B[np];W[nq]))) (;B[nq]C[NOTTHIS])) (;B[nq]C[NOTTHIS])) (;B[qr]C[NOTTHIS]) (;B[rq]C[NOTTHIS]) (;B[pq]C[NOTTHIS])) (;B[pq];W[or])) (;B[or];W[os] (;B[oq];W[qr]) (;B[qr];W[ps]) (;B[rr];W[sn]C[] (;B[oq];W[pr]C[]) (;B[pr];W[ps]C[])) (;B[rq]C[NOTTHIS])) (;B[rq]C[NOTTHIS];W[sn];B[rr];W[so];B[oq]C[Works too.])) (;B[qr];W[pr] (;B[sr];W[rs]TR[rq]TR[rr]C[Miai]) (;B[rs];W[sr] (;B[ps];W[or] (;B[rq];W[sn]TR[so]TR[sq]C[Dead]) (;B[rr];W[sn];B[sq];W[rp]C[Dead])) (;B[rq];W[sn]TR[so]TR[sq]C[Dead]) (;B[rr];W[sn];B[sq];W[rp]C[Dead]))) (;B[ps];W[pr] (;B[qr];W[sr];B[rs];W[or] (;B[rq];W[sn]TR[so]TR[sq]C[Dead]) (;B[rr];W[sn];B[sq];W[rp]C[Dead])) (;B[rs];W[sr];B[qr];W[or] (;B[rq];W[sn]TR[so]TR[sq]C[Dead]) (;B[rr];W[sn];B[sq];W[rp]C[Dead]))) (;B[pr];W[ps] (;B[os];W[or];B[rs];W[sr];B[qr];W[ps]C[Dead, only one eye in corner.]) (;B[rs];W[sr];B[os];W[or];B[qr];W[ps]C[Dead, only one eye in corner.])) (;B[rq];W[rs]) (;B[oq];W[pr]C[There might be better moves than this one (this is the best I found).] (;B[rr];W[rs];B[or];W[os];B[nq];W[mr]C[Dead]) (;B[rs];W[rr];B[qr];W[rq];B[sr];W[ss]C[Ko])) (;B[rr];W[rs]) (;B[ol]C[No, black can live.]))