Problem	18472
Created	2014-12-06
Name	449 - 900
Source	encyclopedia of life and death
Rating

Difficulty	15.5 kyu
Average Solve Time	37 secs
User Attempts	1078 / 2377
Solve Ratio Rating	8 kyu
	rating history

(;AP[goproblems]AW[bc]AW[cc]AW[dc]AW[cb]AW[eb]AW[da]AB[fa]AB[fb]AB[fc]AB[ec]AB[dd]AB[cd]AB[bd]AB[bf](;B[ab];W[ac](;B[ea];W[ba]C[Adv. koCHOICE])(;B[ba];W[bb];B[ea];W[ca]C[CHOICE]))(;B[ac];W[ab](;B[ba]C[RIGHT])(;B[ea];W[ba])(;B[ca];W[ba])(;B[ad];W[ba]))(;B[ea];W[ba];B[ab];W[ac];B[db]C[Adv. koCHOICE])(;B[ba];W[bb](;B[ac];W[ab];B[ea]C[RIGHT])(;B[ea]C[RIGHT])(;B[ab];W[ac]))(;B[bb];W[ba])(;B[ca];W[ba]))