Problem	1427
Created	2002-04-01
Source
Rating

Difficulty	6 dan
Average Solve Time	65 secs
User Attempts	315 / 2764
Solve Ratio Rating	3 dan
	rating history

Game on IGS: Billy vs ZiGong

(;GM[1] FF[4] AP[Hibiscus:2.1] SZ[19] ST[3] ;C[Black to kill.] PL[B] AB[ni][og][oh][oj][pd][pe][pf][pg][pj][pk][pl][qd][ql][qm][qn][qo][rd][re][rm][ro][sc][so] AW[oi][pi][qe][qf][qg][qi][qj][qk][rf][rl][rn][sk][sl][sm][sn] (;B[sj] ;W[rk] (;B[qh] ;W[rh] (;B[ph] ;W[si] (;B[rj] ;W[ri] ;B[sf] C[RIGHT] )(;B[sf] ;W[rj] ))(;B[ri] ;W[ph] )(;B[sh] ;W[sf] )(;B[sf] ;W[si] (;B[sg] ;W[rj] (;B[sh] ;W[ph] )(;B[ph] ;W[rg] ))(;B[rg] ;W[rj] ;B[sh] ;W[sg] C[ko] )(;B[ph] ;W[rj] )))(;B[rh] ;W[qh] (;B[sf] ;W[sg] )(;B[sg] ;W[sf] )(;B[rg] ;W[sf] )(;B[sh] ;W[ri] ;B[sf] ;W[sg] )(;B[ri] ;W[sh] )(;B[si] ;W[sf] ))(;B[sf] ;W[rh] (;B[sg] ;W[si] ;B[rj] C[RIGHT] )(;B[ph] ;W[si] ;B[rj] ;W[sg] ;B[qh] C[RIGHT] ))(;B[sh] ;W[rh] ;B[sf] ;W[si] ;B[ri] ;W[rj] ;B[qh] ;W[si] ;B[rg] ;W[sg] C[ko] )(;B[ri] ;W[rh] )(;B[sg] ;W[sf] )(;B[ph] ;W[qh] ))(;B[si] ;W[rh] )(;B[rj] ;W[rh] )(;B[ri] ;W[rh] )(;B[ph] ;W[qh] )(;B[qh] ;W[rh] (;B[sj] ;W[ph] )(;B[sf] ;W[ph] )(;B[ph] ;W[rj] ))(;B[rh] ;W[qh] (;B[sj] ;W[rk] (;B[sf] ;W[sg] )(;B[sg] ;W[sf] )(;B[sh] ;W[ri] ;B[sf] ;W[sg] ;B[rg] ;W[si] )(;B[rg] ;W[sf] )(;B[ri] ;W[sh] ))(;B[sf] ;W[rj] (;B[sg] ;W[si] )(;B[rg] ;W[si] )(;B[si] ;W[sg] ;B[sj] ;W[rk] ;B[rg] ;W[se] LB[ph:A][ri:B]C[Black plays A and get seki gote or White plays B and lives unconditionally.] )(;B[sh] ;W[sg] )(;B[ri] ;W[sg] ))(;B[si] ;W[ri] )(;B[ri] ;W[rj] )(;B[sg] ;W[sf] ))(;B[sh] ;W[rh] )(;B[sg] ;W[sf] )(;B[sf] ;W[rh] (;B[sj] ;W[sg] )(;B[sg] ;W[rj] )))