Problem	3803
Created	2004-01-25
Source	ferdi
Rating

Difficulty	8 dan
Average Solve Time	63 secs
User Attempts	156 / 1660
Solve Ratio Rating	3 dan
	rating history

The white group is weak... can you prove it?!

(;GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2] RU[Japanese]SZ[19]KM[0.00] PW[Weiß]PB[Schwarz]AW[bm][cm][dm][em][ao][bo][do][ap][ep][aq][cq][dq][eq]AB[ak][ek][bl][cl][dl][fl][am][fm][an][fn][eo][go][dp][fp][fq][br][cr][fr][es] (;B[cn]CR[cn] (;W[bn]CR[bn] ;B[dn]CR[dn] ;W[en]CR[en] ;B[co]CR[co] ;W[cp]CR[cp] ;B[do]CR[do] ;W[fo]CR[fo] ;B[do]CR[do] ;W[eo]CR[eo] ;B[bq]CR[bq]C[White is dead! RIGHT]) (;W[cp]CR[cp] ;B[dn]CR[dn] ;W[co]CR[co] (;B[bq]CR[bq] ;W[en]CR[en]C[White lives]) (;B[bn]CR[bn] ;W[bq]CR[bq]C[White lives]) (;B[en]CR[en] ;W[bq]CR[bq]C[White lives]))) (;B[dn]CR[dn] ;W[cp]CR[cp] ;B[cn]CR[cn] ;W[co]CR[co] (;B[bq]CR[bq] ;W[en]CR[en]C[White lives]) (;B[bn]CR[bn] ;W[bq]CR[bq]C[White lives]) (;B[en]CR[en] ;W[bq]CR[bq]C[White lives])) (;B[cp]CR[cp] ;W[en]CR[en] ;B[co]CR[co] ;W[fo]CR[fo]C[Ko - this is not good enough for Black]) (;B[bn]CR[bn] ;W[cn]CR[cn]C[White lives]))