Problem	19764
Created	2015-05-08
Source
Rating

Difficulty	6.2 kyu
Average Solve Time	59 secs
User Attempts	371 / 829
Solve Ratio Rating	7 kyu
	rating history

(;AB[sq]AB[rq]AB[rp]AB[qp]AB[pp]AB[op]AB[nq]AB[nr]AB[ns]AB[np]AW[os]AW[or]AW[oq]AW[pq]AW[qq]AW[rr]AW[sr]LB[ln:0]LB[mn:1]LB[nn:2]LB[on:3]LB[pn:4]LB[qn:5]LB[rn:6]C[How many ko threats are there?FORCE]AP[goproblems] (;B[ln]) (;B[mn]) (;B[nn]) (;B[on];W[om]C[Prove it.FORCE] (;B[qr];W[qs]C[FORCE] (;B[pr];W[ps]C[FORCE] (;B[qr];W[rs]C[RIGHT]) (;B[rs];W[qr]C[RIGHT]) (;B[pr]) (;B[ss])) (;B[ps];W[pr]) (;B[rs];W[pr]) (;B[ss];W[pr])) (;B[qs];W[qr]) (;B[rs];W[qr]) (;B[ps];W[qr]) (;B[pr];W[qr]) (;B[ss];W[qr])) (;B[pn]) (;B[qn]) (;B[rn]))