Problem	18521
Created	2014-12-07
Name	402 - 900
Source	encyclopedia of life and death
Rating

Difficulty	29.7 kyu
Average Solve Time	15 secs
User Attempts	2345 / 2970
Solve Ratio Rating	25 kyu
	rating history

(;AB[ca]AB[ea]AB[eb]AB[ec]AB[ed]AB[dd]AB[cd]AB[ad]AB[bd]AW[aa]AW[ac]AW[bc]AW[cc]AW[dc]AW[db]AW[da]AP[goproblems] (;B[bb]C[RIGHT]) (;B[ba];W[bb]C[Disadv. koCHOICE]))