Problem	10348
Created	2007-09-09
Source	Go congress in Praha (2005)
Rating

Difficulty	13 kyu
Average Solve Time	47 secs
User Attempts	1127 / 2576
Solve Ratio Rating	7 kyu
	rating history

Comments are welcome.
Japanese rules

(;AB[ps]AB[pr]AB[qq]AB[rr]AB[rp]AW[rn]AB[ro]AW[rs]AW[or]AW[op]AW[pq]AW[qp]AW[qo]AW[qn]AW[so]C[White to kill]AP[goproblems] (;W[os];B[qr] (;W[sq] (;B[sr] (;W[sp];B[rq];W[sn]C[RIGHT]) (;W[sn];B[rq];W[sp]C[RIGHT])) (;B[rq] (;W[sp]C[RIGHT]) (;W[sr]C[RIGHT]) (;W[sn];B[sp];W[sr];B[ss];W[sr]C[Black is going to be killed in a bent four.RIGHT]))) (;W[sp];B[sq] (;W[sr];B[ss]C[Only ko]) (;W[rq];B[rp];W[ss]C[RIGHT]) (;W[ss];B[sn])) (;W[sr];B[sq];W[sn];B[ss]C[Ko]) (;W[ss];B[sq];W[sn];B[sp])) (;W[sp];B[sq];W[rq];B[rp] (;W[ss];B[qs]) (;W[qs];B[ss];W[sr]C[Ko]) (;W[sr];B[ss]C[ko]) (;W[os];B[ss];W[sr]C[ko])) (;W[sq] (;B[rq] (;W[sp];B[sr] (;W[os];B[sn];W[qr]C[RIGHT]) (;W[sn];B[qs])) (;W[sn] (;B[sp];W[os];B[qr];W[sr];B[ss];W[sr]C[Black is going to be killed in a bent four.RIGHT]) (;B[sr];W[os] (;B[qr];W[sp]C[RIGHT]) (;B[sp];W[qr]C[RIGHT]))) (;W[sr];B[qs];W[sp];B[ss];W[sn]C[RIGHT]) (;W[os]C[RIGHT])) (;B[sr] (;W[os];B[qr] (;W[sp];B[rq];W[sn]C[RIGHT]) (;W[sn];B[rq];W[sp]C[RIGHT])) (;W[sn]) (;W[qs];B[rq]))))