Problem 427 goproblems.com


Author	adum	Created	2001-03-03
Difficulty	1 kyu (history)	Source	GZP end 530
AVG solve time	59 sec	Stars	4.13 (8 votes)
User attempts	877 / 4672	Collections	GuanZiPu
Genre	life and death ⓒ	Your attempts	N/A
Similar problems
Created	2001-03-03
Source	GZP end 530
Stars	4.13 (8 votes)
Collections	GuanZiPu
Your attempts	N/A

(;GM[1]FF[4]CA[UTF-8] SZ[19]RU[Japanese]KM[0]TM[1800,0,30,5]PW[]PB[]AW[ca][cb][cc][bc][dc][fc][ec][gb]AB[gc][hb][hc][ee][be][bd]AE[ce][df]AB[de]AE[gd]AB[ge]AE[fd]AB[ac][bb]PL[B]C[how can black attack this?] (;B[ga]CR[ga] ;W[ab]CR[ab] (;B[aa]CR[aa] ;W[ba]CR[ba] (;B[ab]CR[ab] ;W[ad]CR[ad] (;B[ab]CR[ab] ;W[eb]CR[eb] (;B[ac]CR[ac] ;W[fa]CR[fa]C[RIGHT ko]) (;B[fb]CR[fb] ;W[ac]CR[ac]) (;B[ea]CR[ea] ;W[da]CR[da] (;B[ac]CR[ac] ;W[fb]CR[fb]) (;B[fa]CR[fa] ;W[ac]CR[ac]))) (;B[fb]CR[fb] ;W[ab]CR[ab]) (;B[ea]CR[ea] ;W[ab]CR[ab])) (;B[fb]CR[fb] ;W[ab]CR[ab]) (;B[ad]CR[ad] ;W[ab]CR[ab]) (;B[ea]CR[ea] ;W[ab]CR[ab])) (;B[ea]CR[ea] ;W[ba]CR[ba]) (;B[fb]CR[fb] ;W[ba]CR[ba]) (;B[ad]CR[ad] ;W[ba]CR[ba])) (;B[fb]CR[fb] ;W[eb]CR[eb] (;B[ga]CR[ga] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba] (;B[ab]CR[ab] ;W[ad]CR[ad]) (;B[ad]CR[ad] ;W[ab]CR[ab])) (;B[ab]CR[ab] ;W[fa]CR[fa]) (;B[fa]CR[fa] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba])) (;B[eb]CR[eb] ;W[fb]CR[fb] (;B[ab]CR[ab] ;W[ea]CR[ea] (;B[ga]CR[ga] ;W[db]CR[db]) (;B[db]CR[db] ;W[ga]CR[ga])) (;B[ea]CR[ea] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba])) (;B[ea]CR[ea] ;W[eb]CR[eb] (;B[ga]CR[ga] ;W[da]CR[da] (;B[fa]CR[fa] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba]) (;B[fb]CR[fb] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba]) (;B[ab]CR[ab] ;W[fb]CR[fb] (;B[ha]CR[ha] ;W[fa]CR[fa]) (;B[fa]CR[fa] ;W[ha]CR[ha]))) (;B[ab]CR[ab] ;W[fa]CR[fa]) (;B[da]CR[da] ;W[fa]CR[fa]) (;B[fa]CR[fa] ;W[da]CR[da] ;B[ga]CR[ga] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba])) (;B[fa]CR[fa] ;W[eb]CR[eb] (;B[ab]CR[ab] ;W[ga]CR[ga] (;B[ha]CR[ha] ;W[fb]CR[fb]) (;B[ea]CR[ea] ;W[da]CR[da])) (;B[ga]CR[ga] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba]) (;B[fb]CR[fb] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba])) (;B[ha]CR[ha] ;W[ab]CR[ab] ;B[aa]CR[aa] ;W[ba]CR[ba] ;B[ab]CR[ab] ;W[ad]CR[ad] ;B[ab]CR[ab] ;W[ac]CR[ac] (;B[fb]CR[fb] ;W[eb]CR[eb]) (;B[ga]CR[ga] ;W[eb]CR[eb]) (;B[ea]CR[ea] ;W[eb]CR[eb])) (;B[ab]CR[ab] ;W[ga]CR[ga] (;B[ea]CR[ea] ;W[eb]CR[eb] (;B[da]CR[da] ;W[fa]CR[fa] ;B[ha]CR[ha] ;W[db]CR[db]) (;B[fa]CR[fa] ;W[da]CR[da]) (;B[ha]CR[ha] ;W[da]CR[da])) (;B[eb]CR[eb] ;W[ea]CR[ea] (;B[fb]CR[fb] ;W[db]CR[db]) (;B[db]CR[db] ;W[fb]CR[fb]) (;B[ha]CR[ha] ;W[fb]CR[fb]))))