Problem	5453
Created	2004-11-10
Name	Go Seigen Tsumego No.21
Source	Go Seigen
Rating

Difficulty	7 dan
Average Solve Time	53 secs
User Attempts	260 / 2030
Solve Ratio Rating	2 dan
	rating history

Black to play.

(;AB[na][nb][nc][oc][pc][pe][qe][re][se][sd] AW[sc][rd][qd][rb][qb][ob][oa]SZ[19] (;B[qa] (;W[pb] (;B[ra] (;W[qc];B[sb]C[RIGHT]) (;W[sa];B[qc];W[rc];B[sb]C[RIGHT])) (;WV[]B[qc];W[ra]C[Wrong.])) (;W[qc];B[ra];W[pb];B[sb]C[RIGHT])) (;B[qc];W[pb] (;WV[]B[rc];W[sb]C[Wrong.]) (;WV[]B[sb];W[rc]C[Wrong.])))