Problem	22362
Created	2020-04-29
Source	unknown source on KGS.
Rating

Difficulty	13.8 kyu
Average Solve Time	75 secs
User Attempts	146 / 362
Solve Ratio Rating	7 kyu
	rating history

black to live without ko or seki.

(; AW [ea][eb][bc][ec][dd][fd][de][af][bf][cf][df] AB [da][bb][db][dc][ae][be][ce] SZ[19] C[black to live.] (;B[cc] (;W[cd] C[CHOICE] (;B[ac] (;W[bd] C[CHOICE] (;B[ca] (;W[ab] C[CHOICE] ;B[aa] ;W[ad] ;B[ab] C[RIGHT correct.]) (;W[ad] C[CHOICE] (;B[ab] C[RIGHT correct.]) (;B[aa] ;W[ab] C[oops. ko. black can do better.]) ) ) (;B[ab] (;W[ba] C[CHOICE] C[black dies.]) (;W[ca] C[CHOICE] C[black dies.]) ) ) (;W[ca] C[CHOICE] (;B[bd] C[RIGHT correct.]) (;B[cb] ;W[bd] (;B[ba] ;W[ab] C[black dies.]) (;B[ab] ;W[ba] C[black dies.]) ) ) ) (;B[ca] ;W[ab] (;B[aa] ;W[ac] C[black dies.]) (;B[ac] ;W[ad] ;B[aa] ;W[ba] C[ko. black can do better.]) ) (;B[ab] (;W[ba] C[CHOICE] ;B[ac] ;W[bd] C[black dies.]) (;W[ca] C[CHOICE] ;B[cb] ;W[ba] ;B[ac] ;W[bd] C[black dies.]) ) ) (;W[ca] C[CHOICE] (;B[ac] ;W[cd] ;B[bd] C[RIGHT correct.]) (;B[cd] ;W[ab] (;B[ba] C[RIGHT correct.]) (;B[cb] ;W[ba] ;B[aa] ;W[ba] (;B[ac] ;W[ad] C[seki. black can do better.]) (;B[ad] ;W[ac] C[seki. black can do better.]) (;B[ca] ;W[ad] ;B[aa] C[ko. black can do better.]) ) (;B[bd] ;W[ac] (;B[ba] C[RIGHT correct.]) (;B[cb] ;W[ba] ;B[aa] ;W[ba] C[seki. black can do better.]) ) ) (;B[bd] (;W[cd] C[CHOICE] ;B[ac] C[RIGHT correct.]) (;W[ac] C[CHOICE] (;B[ab] C[RIGHT correct.]) (;B[cd] C[RIGHT correct.]) (;B[cb] ;W[ab] (;B[cd] ;W[ba] ;B[aa] ;W[ba] C[seki. black can do better.]) (;B[ba] ;W[cd] C[black dies.]) ) (;B[ba] ;W[cd] ;B[cb] ;W[ab] C[black dies.]) ) ) ) ) (;B[ac] ;W[cc] (;B[cb] ;W[cd] C[black dies.]) (;B[cd] (;W[cb] C[CHOICE] C[black dies.]) (;W[bd] C[CHOICE] C[black dies.]) (;W[ad] C[CHOICE] C[black dies.]) ) ) (;B[cd] ;W[cc] (;B[cb] (;W[ad] C[CHOICE] C[black dies.]) (;W[bd] C[CHOICE] C[black dies.]) ) (;B[ac] ;W[cb] C[black dies.]) ) (;B[cb] ;W[cd] ;B[ab] ;W[ba] C[black dies.]) )