Problem 48 goproblems.com


Author	guff	Created	1999-08-16
Difficulty	2 kyu (history)	Source	Yang Yilun 7p
AVG solve time	31 sec	Stars	3.44 (18 votes)
User attempts	2165 / 10650	Collections	N/A
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	1999-08-16
Source	Yang Yilun 7p
Stars	3.44 (18 votes)
Collections	N/A
Your attempts	N/A

(;AB[ac]AB[bc]AB[bd]AB[cd]AB[dd]AB[ee]AB[ge]AB[hb]AB[hc]AB[hd]AW[ab]AW[bb]AW[cc]AW[dc]AW[fc]AW[gc]SZ[19]PL[B]GM[1]FF[4]AP[Jago:Version 3.11]ST[3] (;B[db];W[cb] (;B[eb];W[ec] (;B[fb]C[Correct. White dies.RIGHT]) (;B[ga]C[RIGHT]) (;B[eb];W[db]C[Wrong. White can live by giving up two stones.] (;B[fb]C[Correct. White dies.RIGHT]) (;B[ga]C[RIGHT]) (;B[eb];W[db]C[Wrong. White can live by giving up two stones.]) (;B[ea];W[eb] (;B[fa];W[da]C[Wrong. White lives.]) (;B[da];W[ca]C[Wrong. White lives.]) (;B[ca];W[fa] (;B[da];W[gb]C[Wrong. White lives.]) (;B[cb];W[da] (;B[gb];W[db]C[Wrong. White lives.]) (;B[ba];W[gb]C[Wrong. White lives.])))) (;B[ca];W[cb] (;B[eb];W[ec];B[fa];W[ga]C[Wrong. White lives.]) (;B[ea];W[eb] (;B[fa];W[da];B[db];W[ba];B[da];W[ga]C[Wrong. White lives.]) (;B[da];W[fa]C[Wrong. White dies.])) (;B[da];W[gb];B[eb];W[ec]C[Wrong. White dies.])) (;B[ca];W[cb];B[ea];W[eb]C[ko.]) (;B[gb];W[fb]) (;B[fa];W[ga];B[gb];W[fb];B[ha];W[da])) (;B[ea];W[eb] (;B[fa];W[da]C[Wrong. White lives.]) (;B[da];W[ca]C[Wrong. White lives.]) (;B[ca];W[fa] (;B[da];W[gb]C[Wrong. White lives.]) (;B[cb];W[da] (;B[gb];W[db]C[Wrong. White lives.]) (;B[ba];W[gb]C[Wrong. White lives.])))) (;B[ca];W[cb] (;B[eb];W[ec];B[fa];W[ga]C[Wrong. White lives.]) (;B[ea];W[eb] (;B[fa];W[da];B[db];W[ba];B[da];W[ga]C[Wrong. White lives.]) (;B[da];W[fa]C[Wrong. White dies.])) (;B[da];W[gb];B[eb];W[ec]C[Wrong. White dies.];B[eb];W[ec]C[Wrong. White dies.])) (;B[ca];W[cb];B[ea];W[eb]C[ko.] (;B[fa];W[da];B[db];W[ba];B[da];W[ga]C[Wrong. White lives.]) (;B[da];W[fa]C[Wrong. White dies.])) (;B[gb];W[fb]) (;B[fa];W[ga];B[gb];W[fb];B[ha];W[da])) (;B[ec];W[eb]) (;B[fb];W[eb])) (;B[ca] (;W[da] (;B[eb];W[ec] (;B[db];W[cb];B[ea];W[fb]) (;B[fb];W[gb];B[ga];W[db] (;B[fa];W[ba]) (;B[ba];W[fa]))) (;B[db];W[eb];B[ea];W[cb] (;B[da];W[fa]) (;B[fb];W[ec] (;B[da];W[ba];B[fa];W[gb]) (;B[fa];W[ba];B[da];W[gb]) (;B[gb];W[ba]) (;B[ga];W[ba])) (;B[fa];W[ba];B[da];W[ga])) (;B[fa];W[ba];B[db];W[eb];B[ea];W[cb];B[da];W[ga]) (;B[ba];W[cb] (;B[eb];W[ec];B[fb];W[gb];B[ga];W[fa];B[ea];W[db]) (;B[ea];W[eb] (;B[db];W[fa]) (;B[fa];W[ga] (;B[gb];W[fb]) (;B[db];W[fb]))) (;B[fa];W[eb];B[ea];W[ga];B[db];W[fb]) (;B[fb];W[eb]) (;B[ec];W[eb]))) (;W[eb];B[cb]) (;W[db];B[ba];W[gb];B[cb];W[da];B[aa];W[eb]) (;W[cb];B[ea];W[eb];B[fa];W[da];B[db];W[ba];B[da];W[ga])) (;B[cb];W[db];B[ca];W[da];B[ba];W[aa];B[ca];W[gb]) (;B[ea];W[eb] (;B[ca];W[cb] (;B[ba];W[fa]) (;B[da];W[fa]) (;B[fa];W[da]C[Look for something better.];B[db];W[ba])) (;B[da];W[fa] (;B[cb];W[ba]) (;B[ca];W[cb]) (;B[ga];W[fb] (;B[ca];W[cb]) (;B[cb];W[db]))) (;B[fa];W[da] (;B[gb];W[cb]) (;B[ga];W[cb]) (;B[ca];W[ba] (;B[db];W[cb];B[da];W[ga]) (;B[cb];W[db]))) (;B[ga];W[da])) (;B[ga];W[ca] (;B[db];W[eb]) (;B[eb];W[db];B[ec]C[Try to catch the whole thing.])) (;B[fa];W[eb] (;B[da];W[ea] (;B[ba];W[cb]C[]) (;B[cb];W[db])) (;B[ca];W[cb] (;B[da];W[ea]) (;B[ea];W[da];B[db];W[ba];B[da];W[ga])) (;B[cb];W[ca]) (;B[ea];W[da];B[ca];W[cb];B[db];W[ba];B[da];W[ga])) (;B[gb];W[ca] (;B[db];W[eb]) (;B[eb];W[db];B[ec]C[Try to catch the whole thing.])) (;B[fb];W[eb];B[gb];W[ca]) (;B[ec];W[eb] (;B[cb];W[db];B[ca];W[da];B[ba];W[aa] (;B[ca];W[gb]) (;B[fa];W[ca])) (;B[db];W[cb]) (;B[ed];W[cb];B[da];W[ea]) (;B[fb];W[ed])) (;B[eb];W[db] (;B[da];W[ca] (;B[ea];W[ec] (;B[ga];W[fa];B[fb];W[gb]) (;B[fa];W[ga]) (;B[gb];W[fb]) (;B[fb];W[gb])) (;B[fa];W[ea]C[ko])) (;B[ec];W[da]) (;B[ea];W[da])) (;B[da] (;W[ca]C[CHOICE] (;B[ea];W[fa] (;B[fb];W[eb];B[ga];W[db];B[fa]C[RIGHT]) (;B[eb];W[ec] (;B[fb];W[gb];B[ga];W[db]) (;B[ba]C[NOTTHIS])) (;B[ba]C[NOTTHIS]) (;B[ga];W[fb])) (;B[db];W[eb]) (;B[ba]C[NOTTHIS]) (;B[eb];W[ec] (;B[fb];W[gb];B[ga];W[fa];B[ea];W[db]) (;B[fa];W[db] (;B[ga];W[ea]C[ko]) (;B[ea];W[ga]) (;B[gb];W[fb])) (;B[db];W[fb]) (;B[ea];W[fb]) (;B[gb];W[fb];B[fa];W[db]) (;B[ga];W[db];B[ea];W[fa];B[fb];W[gb])) (;B[ec];W[eb] (;B[db];W[ed]) (;B[ea];W[fa]) (;B[ed];W[ea])) (;B[fa];W[ga] (;B[gb];W[ea];B[eb];W[db];B[ea];W[fb];B[ha]C[RIGHT]) (;B[eb];W[ec];B[gb];W[fb];B[ha];W[db])) (;B[fb];W[ea])) (;W[db];B[ea];W[fa];B[fb] (;W[eb];B[ga]) (;W[ca];B[ga])) (;W[eb];B[cb];W[db];B[ca];W[ea];B[ba];W[aa];B[ca]) (;W[ba];B[cb];W[db];B[ea] (;W[fa];B[ec];W[ca];B[eb]) (;W[ca]) (;W[eb];B[fa];W[ga];B[gb];W[fb];B[ha];W[ca];B[ga];W[ed];B[fd])) (;W[ea];B[eb] (;W[db];B[fa];W[ca];B[ea]) (;W[ca];B[db];W[ec];B[fb];W[gb];B[ga];W[cb];B[fa]) (;W[ec];B[fa];W[ga];B[gb];W[fb];B[ha];W[db];B[ea];W[ca];B[ga])) (;W[cb];B[eb];W[ec];B[fa]) (;W[fb];B[cb];W[db];B[ca];W[ea];B[ba];W[aa];B[ca]) (;W[fa];B[cb];W[db];B[ca];W[ea];B[ba];W[aa];B[ca];W[cb];B[ec];W[eb];B[gb]) (;W[gb];B[eb];W[ec];B[cb];W[db];B[ca];W[fa];B[ba];W[ea];B[aa])))