Problem 3055 goproblems.com


Author	santa c	Created	2003-10-05
Difficulty	23 kyu (history)	Source	A game of mine on KGS
AVG solve time	32 sec	Stars	4.5 (40 votes)
User attempts	27391 / 42664	Collections	Amateur Game, Side based
Genre	life and death	Your attempts	N/A
Similar problems
Created	2003-10-05
Source	A game of mine on KGS
Stars	4.5 (40 votes)
Collections	Amateur Game, Side based
Your attempts	N/A

(;SZ[19]AW[aa]AW[ab]AW[cb]AW[db]AW[bc]AW[cd]AW[dd]AW[ed]AW[de]AB[eb]AB[fb]AB[ac]AB[fc]AB[ad]AB[bd]AB[fd]AB[ae]AB[ce]AB[ee]AB[af]AB[bf]AB[df]AB[ff]C[Guess... ;)FORCE]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.50]PW[White]PB[Black] (;B[dc];W[ba] (;B[da];W[cc] (;B[ec]C[Well done!RIGHT]) (;B[ea];W[ca];B[ec]C[Well done!RIGHT]) (;B[ca];W[ea]C[White's alive!]TR[ec]TR[da])) (;B[ec] (;W[da];B[cc]C[Well done!CHOICERIGHT]) (;W[cc];B[da]C[Well done!CHOICERIGHT])) (;B[cc];W[ec]C[White's alive!]) (;B[ca];W[da] (;B[ec];W[cc]C[White's alive!]) (;B[cc];W[ec]C[White's alive!])) (;B[ea];W[da]C[White's alive!]LB[cc:A]LB[ec:B])) (;B[ec];W[dc] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!]) (;B[ba];W[bb]C[White's alive!]LB[da:B]LB[ca:A]LB[ea:C]) (;B[bb];W[ba]C[White's alive!])) (;B[cc] (;W[dc] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!]) (;B[ba];W[bb]C[White's alive!]LB[ca:A]LB[da:B]LB[ea:C]) (;B[bb];W[ba]C[White's alive!])) (;W[bb]C[White's alive! (Each set of A and B is miai to deny an eye.)]LB[ca:A]LB[da:B]LB[dc:A]LB[ec:B])) (;B[da];W[ca] (;B[dc];W[cc];B[ec]C[Well done!RIGHT]) (;B[ec];W[dc]C[White's alive!]) (;B[cc] (;W[dc]C[White's alive!CHOICE]) (;W[bb]C[White's alive!CHOICE]LB[dc:A]LB[ec:B])) (;B[ba];W[dc] (;B[bb];W[ab] (;B[cc]MA[bc]C[A ko isn't a solution when a sure kill is possible.]) (;B[aa];W[ab]C[White's alive!])) (;B[ec];W[bb]C[White's alive!]) (;B[ea];W[bb]C[White's alive!])) (;B[bb];W[dc] (;B[ba];W[ab] (;B[cc]C[A ko isn't a solution when sure kill is possible.]MA[bc]) (;B[aa];W[ab]C[White's alive!])) (;B[cc]C[A ko isn't a solution when a sure kill is possible.]MA[bc]) (;B[ec];W[ba]C[White's alive!]) (;B[ea];W[ba]C[White's alive!])) (;B[ea]C[E17 is bigger than D17 by a point, but leave an extra ko threat.] (;W[ec]C[White's alive!]) (;W[dc]C[White's alive!]))) (;B[ca];W[da] (;B[ba];W[dc];B[bb];W[ab] (;B[aa];W[ab]C[White's alive!]) (;B[cc]MA[bc]C[A ko isn't a solution when sure kill is possible.])) (;B[bb];W[ba]C[White's alive!]) (;B[ec];W[dc]C[White's alive!]) (;B[cc];W[dc]C[White's alive!]) (;B[dc];W[ba]C[White's alive!]LB[cc:A]LB[ec:B] (;B[ec];W[cc]C[White's alive!]) (;B[cc];W[ec]C[White's alive!])) (;B[ea] (;W[ba]C[White's alive!CHOICE]) (;W[ec]C[White's alive!CHOICE]) (;W[dc]C[White's alive!]))) (;B[bb];W[ba] (;B[dc];W[da]C[White's alive!]LB[cc:A]LB[ec:B] (;B[ec];W[cc]C[White's alive!]) (;B[cc];W[ec]C[White's alive!])) (;B[da]C[E17 is bigger than D17 by a point but leaves an extra ko threat.] (;W[dc]C[White's alive!CHOICE]) (;W[ec]C[White's alive!CHOICE])) (;B[ec];W[dc]C[White's alive!]) (;B[cc];W[dc]C[White's alive!]) (;B[ca];W[da]C[White's alive!])) (;B[ba];W[bb] (;B[dc];W[cc] (;B[ec]C[Well done!RIGHT]) (;B[da];W[ec] (;B[ca];W[ea] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!])) (;B[ea];W[ca]C[White's alive!])) (;B[ca];W[ec] (;B[ea];W[da]C[White's alive!]) (;B[da];W[ea] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!])))) (;B[ec];W[dc]C[White's alive!]LB[ca:A]LB[da:B]LB[ea:C]) (;B[cc];W[dc]C[White's alive!]LB[ca:A]LB[da:B]LB[ea:C]) (;B[da];W[dc] (;B[ea];W[ca]C[White's alive!]) (;B[ca];W[ea];B[da];W[ca]C[White's alive!]) (;B[ec];W[ca]C[White's alive!])) (;B[ca];W[dc] (;B[ea];W[da]C[White's alive!]) (;B[da];W[ea] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!])) (;B[ec];W[da]C[White's alive!])) (;B[ea];W[dc]C[White's alive!]LB[ca:A]LB[da:B] (;B[da];W[ca]C[White's alive!CHOICE]) (;B[ca];W[da]C[White's alive!]))) (;B[ea]C[E17 is one point bigger than D17 but also provides an extra ko threat..] (;W[dc] (;B[ba];W[bb] (;B[da];W[ca]C[White's alive!CHOICE]) (;B[ca];W[da]C[White's alive!])) (;B[bb];W[ba]C[White's alive!]) (;B[ca];W[da]C[White's alive!]) (;B[da];W[ca]C[White's alive!])) (;W[ec] (;B[da];W[ca]C[White's alive!CHOICE]) (;B[ca];W[da]C[White's alive!]) (;B[ba];W[bb] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!]) (;B[cc];W[dc] (;B[da];W[ca]C[White's alive!]) (;B[ca];W[da]C[White's alive!])) (;B[dc];W[cc] (;B[ca];W[da]C[White's alive!]) (;B[da];W[ca]C[White's alive!]))) (;B[bb];W[ba]C[White's alive!])) (;W[ba]LB[da:A]LB[dc:B]LB[ec:B]C[White's alive!])))