Problem 10790 goproblems.com


Author	BartTM	Created	2008-01-11
Difficulty	5 dan (history)	Source	Problem 10786
AVG solve time	48 sec	Stars	3.6 (5 votes)
User attempts	113 / 509	Collections	N/A
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2008-01-11
Source	Problem 10786
Stars	3.6 (5 votes)
Collections	N/A
Your attempts	N/A

(;AW[rs]AW[sr]AW[sq]AW[rq]AW[rp]AW[so]AW[qo]AW[po]AW[pp]AW[oo]AW[mp]AW[lp]AW[lq]AW[kq]AW[kr]AW[np]AB[rr]AB[qr]AB[qq]AB[qp]AB[oq]AB[op]AB[nq]AB[mq]AB[mr]AB[lr]TR[rs]C[Best defense here would be...]AW[ir]AP[goproblems] (;B[or] (;W[pq] (;B[ns];W[pr] (;B[ls]C[Correct! To keep alive you have to shed a limb. Greed is suicidal.RIGHT]TR[qr]TR[rr]TR[qq]TR[qp]) (;B[ps];W[ls]) (;B[qs];W[ls])) (;B[ls];W[ns]C[Just one eye.]) (;B[pr];W[ns]C[One eye only.]) (;B[qs];W[ns] (;B[os];W[pr]) (;B[pr];W[os])) (;B[ps];W[ns]) (;B[os]C[Dead just as it stands.]) (;B[ms];W[pr])) (;W[ns];B[pq];W[ps];B[qs];W[ls];B[ms];W[os]C[White can prevent Black from living with points by causing this gote seki. But Black loses no stones now so this is better for Black than the solution path.RIGHT])) (;B[pq];W[or] (;B[ls];W[ps] (;B[qs];W[ns]C[If Black plays at O2 or Q2 then White connects at P1; otherwise White will play O2 and Q2 to kill from within.]) (;B[ns];W[qs]) (;B[pr];W[qs]) (;B[nr];W[qs])) (;B[qs];W[ns] (;B[ps];W[ls]) (;B[ls];W[ps]) (;B[nr];W[os]) (;B[os];W[ps] (;B[ms]C[Black is dead If White plays at P1 Black can capture but still have just one eye.]) (;B[ls]C[If Black plays at O2 or Q2 then White connects at P1; otherwise White will play O2 and Q2 to kill from within.])) (;B[pr];W[os]) (;B[ms];W[os]) (;B[ss];W[ls])) (;B[ms];W[qs]) (;B[ns];W[ls]) (;B[ps];W[ls]) (;B[os];W[ps] (;B[ns];W[pr] (;B[qs];W[ls]) (;B[ls];W[qs]) (;B[nr];W[ls])) (;B[pr];W[ns] (;B[nr];W[os]C[Just one eye.]) (;B[qs];W[os]C[One eye only.])) (;B[qs];W[ns] (;B[ms]C[Black is dead If White plays at P1 Black can capture but still have just one eye.]) (;B[ls]C[If Black plays at O2 or Q2 then White connects at P1; otherwise White will play O2 and Q2 to kill from within.])) (;B[nr];W[ns] (;B[pr];W[os]C[Just one eye.]) (;B[ms];W[os])) (;B[ls];W[qs] (;B[ns];W[pr]) (;B[pr];W[ns]) (;B[nr];W[ns]))) (;B[pr];W[os]) (;B[nr];W[os]) (;B[ks];W[ir]C[You cannot escape like this. L1 does not help to live either.])) (;B[qs];W[pq] (;B[pr];W[or] (;B[ss];W[os] (;B[ns];W[ls]) (;B[ls];W[ks]TR[os]TR[or]C[Black cannot approach the marked stones.])) (;B[os];W[ps]) (;B[nr];W[ps]) (;B[ns];W[ps]) (;B[ls];W[ps])) (;B[os];W[pr]) (;B[ls];W[or]) (;B[or];W[ns] (;B[os];W[pr]) (;B[pr];W[os])) (;B[ns];W[or] (;B[pr];W[ps]) (;B[ss];W[pr]))) (;B[pr];W[ls] (;B[os];W[qs] (;B[ms];W[nr]) (;B[nr];W[ms])) (;B[nr];W[os]) (;B[ms];W[os]) (;B[ns];W[or] (;B[qs];W[pq] (;B[os];W[ps]) (;B[ss];W[os]) (;B[nr];W[ps])) (;B[os];W[qs])) (;B[or];W[ns]) (;B[qs];W[os])) (;B[ps];W[pq] (;B[or];W[ns]) (;B[ns];W[or] (;B[pr];W[ls]) (;B[ls];W[pr])) (;B[pr];W[ns] (;B[nr];W[os]) (;B[os];W[nr])) (;B[ls];W[or])) (;B[os];W[ls] (;B[pq];W[qs] (;B[ms];W[nr] (;B[ps];W[or]) (;B[or];W[ps])) (;B[ps] (;W[ms];B[ns];W[or]) (;W[or] (;B[nr];W[ms]) (;B[ms];W[nr]))) (;B[or];W[ps]) (;B[nr];W[ms])) (;B[ms];W[qs] (;B[nr];W[pr] (;B[ps];W[pq]) (;B[pq];W[ps])) (;B[ps];W[pq] (;B[ss];W[pr]) (;B[pr];W[nr]) (;B[nr];W[pr])) (;B[pq];W[nr] (;B[ps];W[or]) (;B[or];W[ps])) (;B[pr];W[nr]) (;B[or];W[pq])) (;B[pr];W[qs] (;B[ms];W[nr]) (;B[nr];W[ms])) (;B[qs];W[pr] (;B[pq];W[ms];B[ns];W[or]) (;B[or];W[pq]) (;B[ms];W[pq])) (;B[ps];W[pq]) (;B[or];W[pq] (;B[qs];W[pr]) (;B[pr];W[qs])) (;B[nr];W[pr] (;B[ms];W[pq]) (;B[pq];W[ms])) (;B[ns];W[pr] (;B[pq];W[or]) (;B[or];W[pq]))) (;B[ls];W[or] (;B[ns];W[pq] (;B[pr];W[ps]) (;B[os];W[pr]) (;B[ps];W[pr]) (;B[nr];W[pr])) (;B[pq];W[ps] (;B[qs];W[ns]C[If Black plays at O2 or Q2 then White connects at P1; otherwise White will play O2 and Q2 to kill from within.]) (;B[ns];W[qs]) (;B[pr];W[qs]) (;B[nr];W[qs])) (;B[pr];W[ns] (;B[nr];W[os]) (;B[qs];W[pq] (;B[ss];W[os]) (;B[nr];W[ps]) (;B[os];W[ps])) (;B[pq];W[qs] (;B[nr];W[os]) (;B[ps];W[nr]) (;B[os];W[ps]) (;B[ms];W[ps])) (;B[os];W[ps] (;B[qs];W[pq]) (;B[pq];W[qs]) (;B[nr];W[os]))) (;B[os];W[ps] (;B[pr];W[ns] (;B[qs];W[pq]) (;B[pq];W[qs]) (;B[nr];W[os])) (;B[qs];W[pq] (;B[pr];W[ps]) (;B[ss];W[pr]) (;B[nr];W[pr])) (;B[pq];W[qs] (;B[ns];W[pr]) (;B[pr];W[ns]) (;B[nr];W[ns])) (;B[ns];W[pq])) (;B[ps];W[pq]) (;B[qs];W[pq]) (;B[nr];W[ns] (;B[pr];W[os]) (;B[os];W[ps] (;B[pr];W[os]) (;B[qs];W[pq]) (;B[pq];W[qs]) (;B[ms];W[pq])) (;B[ps];W[pq] (;B[pr];W[os];B[ms];W[os]) (;B[os];W[pr])) (;B[pq];W[ps]) (;B[qs];W[pq] (;B[pr];W[ps]) (;B[ss];W[pr])))) (;B[ns];W[or] (;B[pq];W[ls]) (;B[pr];W[ls] (;B[qs];W[pq] (;B[os];W[ps]) (;B[ss];W[os]) (;B[nr];W[ps])) (;B[os];W[qs])) (;B[qs];W[pq] (;B[pr]) (;B[ss];W[pr])) (;B[ps];W[pq] (;B[pr];W[ls]) (;B[ls];W[pr])) (;B[ls];W[pq] (;B[pr];W[ps]) (;B[os];W[pr]) (;B[ps]) (;B[nr];W[pr])) (;B[os];W[pr] (;B[pq];W[ls]) (;B[ls];W[pq]))) (;B[nr];W[ls] (;B[pr];W[os]) (;B[os];W[pr] (;B[ms];W[pq]) (;B[pq];W[ms])) (;B[ms];W[os]) (;B[pq];W[os] (;B[ps];W[or]) (;B[or];W[ps]))) (;B[ms];W[or] (;B[os];W[nr] (;B[pq];W[qs]) (;B[qs];W[pq] (;B[pr];W[ps]) (;B[ss];W[pr]) (;B[ns];W[pr])) (;B[pr];W[qs])) (;B[pr];W[os]) (;B[ps];W[pq]) (;B[pq];W[qs]) (;B[qs];W[pq]) (;B[nr];W[pq] (;B[pr];W[os]) (;B[os];W[pr]))) (;B[ks];W[pq] (;B[or];W[pr] (;B[ns];W[ls]) (;B[ls];W[ns])) (;B[pr];W[os] (;B[ns];W[or] (;B[nr];W[ls]) (;B[ps];W[qs]) (;B[ls];W[js] (;B[ps];W[qs]) (;B[nr];W[ms]) (;B[qs];W[ps])) (;B[qs];W[ps])) (;B[or];W[ns]) (;B[ls];W[or] (;B[ns];W[js] (;B[ps];W[qs]) (;B[nr];W[ms]) (;B[qs];W[ps])) (;B[nr];W[ns]))) (;B[ls];W[or]) (;B[ns];W[or]) (;B[os];W[pr])))