Problem 6657 goproblems.com


Author	maba	Created	2005-06-08
Difficulty	3 kyu (history)	Source	a game
AVG solve time	58 sec	Stars	3.89 (9 votes)
User attempts	901 / 3912	Collections	Corner based
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2005-06-08
Source	a game
Stars	3.89 (9 votes)
Collections	Corner based
Your attempts	N/A

(;AW[ae]AW[af]AW[be]AW[ce]AW[cf]AW[cc]AW[dc]AW[dd]AW[db]AW[eb]AW[ea]AB[fa]AB[fb]AB[ec]AB[ed]AB[de]AB[bg]AB[ag]AB[bf]AB[cg]AB[df]AB[dg]AB[fc]AB[ac]AB[bb]C[White to play.]AP[goproblems] (;W[bc] (;B[ca] (;W[cb];B[bd] (;W[cd] (;B[ab] (;W[ba]C[RIGHT]) (;W[ad];B[ba]) (;W[da];B[ba];W[ad];B[bd])) (;B[ad];W[ab]C[RIGHT]) (;B[aa];W[ad]C[RIGHT]) (;B[ba];W[ab]C[RIGHT]) (;B[da];W[ba]C[RIGHT])) (;W[ad];B[cd]) (;W[ab] (;B[aa] (;W[ad];B[cd]) (;W[cd];B[ab];W[ad]C[RIGHT]) (;W[da];B[ad];W[ba];B[cd])) (;B[ba];W[ad]C[RIGHT]) (;B[ad];W[cd]C[RIGHT]) (;B[da];W[ba]C[RIGHT]) (;B[cd];W[ad]C[RIGHT])) (;W[aa];B[ad] (;W[cd];B[da]) (;W[ab];B[ba]) (;W[ba];B[ab]) (;W[da];B[cd])) (;W[ba];B[ad] (;W[cd];B[da]) (;W[aa];B[ab]) (;W[ab];B[cd]) (;W[da];B[ab] (;W[cd];B[ca]) (;W[aa];B[cd]))) (;W[da];B[ab] (;W[ad];B[cd]) (;W[cd];B[ad]) (;W[ba];B[ad] (;W[cd];B[ca]) (;W[aa];B[cd])) (;W[aa];B[ad];W[ba];B[cd]))) (;W[bd];B[cb] (;W[aa];B[ab]) (;W[ab];B[aa]) (;W[ad];B[ab])) (;W[ad];B[ab] (;W[cb];B[bd] (;W[ba];B[cd]) (;W[da];B[cd]) (;W[cd];B[ba])) (;W[ba];B[bd] (;W[cd];B[cb]) (;W[cb];B[cd]) (;W[da];B[cd])) (;W[da];B[bd] (;W[cb];B[cd]) (;W[cd];B[cb]) (;W[ba];B[cd]))) (;W[da];B[bd] (;W[cb];B[cd]) (;W[cd];B[cb] (;W[ad];B[bd]) (;W[ab];B[ad]) (;W[ba];B[ad])) (;W[ad];B[ab] (;W[cb];B[cd]) (;W[ba];B[cd]) (;W[aa];B[cd]) (;W[cd];B[cb])) (;W[ba];B[ad] (;W[cb];B[ab] (;W[cd];B[ca]) (;W[aa];B[cd])) (;W[ab];B[aa]) (;W[aa];B[ab]) (;W[cd];B[cb])) (;W[ab];B[aa] (;W[cb];B[cd]) (;W[ad];B[cd]) (;W[cd];B[cb];W[ad];B[bd])) (;W[aa];B[ad] (;W[ab];B[cd]) (;W[cd];B[ab]) (;W[cb];B[cd]) (;W[ba];B[cd]))) (;W[cd];B[ad]) (;W[aa];B[ab] (;W[ad];B[bd] (;W[cb];B[cd]) (;W[da];B[cd]) (;W[cd];B[cb])) (;W[da];B[bd] (;W[ad];B[cd]) (;W[cd];B[ad]) (;W[cb];B[cd]))) (;W[ab];B[aa] (;W[ad];B[bd] (;W[ab]C[NOTTHIS]) (;W[cb];B[cd]) (;W[da];B[cd]) (;W[cd];B[cb]C[ko for seki.])) (;W[bd];B[cb]) (;W[cb];B[bd] (;W[cd]C[RIGHT];B[ab];W[ad]C[RIGHT]) (;W[ad];B[cd]) (;W[da];B[cd])) (;W[da];B[bd] (;W[cd];B[cb];W[ad];B[bd]) (;W[cb];B[cd]) (;W[ad];B[cd])) (;W[cd];B[ad])) (;W[ba];B[cb] (;W[ad];B[aa] (;W[bd];B[ab]) (;W[cd];B[ab]) (;W[da];B[bd]C[ko];W[ab]C[ko]) (;W[ab]C[Two step ko for life.])) (;W[ab];B[aa] (;W[bd]C[seki]) (;W[ad];B[bd]C[] (;W[ab]C[ko for life.]) (;W[cd] (;B[da];W[ab]C[ko for life.]) (;B[ab]C[seki])) (;W[da];B[cd])) (;W[cd];B[ad]) (;W[da];B[bd] (;W[ad];B[cd]) (;W[cd];B[ad]))) (;W[aa];B[bd] (;W[da];B[ab]) (;W[cd];B[ab] (;W[ba];B[ad]) (;W[aa];B[ad]) (;W[ad];B[da])) (;W[ad];B[cd])) (;W[da];B[aa] (;W[ad];B[bd];W[ab]C[ko]) (;W[bd]C[seki])) (;W[bd]C[seki]) (;W[cd];B[ad]))) (;B[bd];W[cd] (;B[cb];W[ca] (;B[ba];W[ab]C[RIGHT]) (;B[ab];W[ba]C[RIGHT]) (;B[ad];W[ab]C[RIGHT])) (;B[ad];W[ab]C[RIGHT]) (;B[ab];W[ba] (;B[ad];W[cb]C[RIGHT]) (;B[cb];W[ca]C[RIGHT]) (;B[ca];W[cb]C[RIGHT])) (;B[ba];W[ab]C[RIGHT]) (;B[ca];W[ab]C[RIGHT])) (;B[ad];W[bd] (;B[cb];W[ca] (;B[ba];W[ab]C[RIGHT]) (;B[ab];W[ba]C[RIGHT])) (;B[ba];W[ab]C[RIGHT]) (;B[ab];W[cb]C[RIGHT]) (;B[ca];W[ab]C[RIGHT])) (;B[cd];W[bd] (;B[ab];W[ba] (;B[cb];W[ca]C[RIGHT]) (;B[ca];W[cb]C[RIGHT])) (;B[ba];W[ab]C[RIGHT]) (;B[cb];W[ca] (;B[ba];W[ab]C[RIGHT]) (;B[ab];W[ba]C[RIGHT])) (;B[ca];W[ab]C[RIGHT])) (;B[cb];W[ca] (;B[ab];W[ba] (;B[bd];W[cd]C[RIGHT]) (;B[ad];W[bd]C[RIGHT])) (;B[ba];W[ab]C[RIGHT]) (;B[bd];W[cd] (;B[ba];W[ab]C[RIGHT]) (;B[ad];W[ab]C[RIGHT]) (;B[ab];W[ba]C[RIGHT])) (;B[ad];W[bd]C[RIGHT] (;B[ba];W[ab]C[RIGHT]) (;B[ab];W[ba]C[RIGHT]))) (;B[ba];W[ab]C[RIGHT]) (;B[ab];W[ba] (;B[cb];W[ca]C[RIGHT] (;B[bd];W[cd]C[RIGHT]) (;B[ad];W[bd]C[RIGHT])) (;B[ca];W[cb]C[RIGHT]))) (;W[bd];B[bc] (;W[cb];B[ca]) (;W[ca];B[ba] (;W[cb];B[ad]) (;W[ad];B[cd]) (;W[ab];B[cb]) (;W[aa];B[cb])) (;W[ba];B[ca] (;W[cb];B[aa]) (;W[aa];B[cb]) (;W[da];B[cb])) (;W[aa];B[ba] (;W[ca];B[cb]) (;W[cb];B[ca]))) (;W[cd];B[bc] (;W[cb];B[ca]) (;W[ba];B[ca] (;W[cb];B[aa]) (;W[aa];B[cb])) (;W[ca];B[ba]) (;W[aa];B[ba])) (;W[cb];B[bc] (;W[ba];B[ca]) (;W[ca];B[ba]) (;W[aa];B[ba])) (;W[ca];B[bc] (;W[bd];B[ba] (;W[cb];B[ad]) (;W[ad];B[cd]) (;W[ab];B[cb]) (;W[aa];B[cb])) (;W[ba];B[cb]) (;W[cb];B[ba])) (;W[ba];B[bc] (;W[cb];B[ca]) (;W[ca];B[cb]) (;W[bd];B[ca] (;W[cb];B[aa]) (;W[aa];B[cb]) (;W[da];B[cb]))))