Problem	1166
Created	2001-11-10
Source	Amateur Game (variation)
Rating

Difficulty	0.4 kyu
Average Solve Time	85 secs
User Attempts	1149 / 5189
Solve Ratio Rating	2 kyu
	rating history

A black overplay at Q19 caused black the loss of some territory (M18-O18) and a problem similar to this.

(;SZ[19]AW[ac]AW[bb]AW[bd]AW[cb]AW[cc]AW[cd]AW[dd]AW[cg]AW[ch]AW[df]AW[ee]AW[ef]AW[eg]AW[fd]AW[gd]AW[gc]AW[ff]AW[gf]AW[he]AW[hf]AW[if]AW[jf]AW[kf]AW[kg]AW[lf]AW[jh]AW[mf]AW[me]AW[ne]AW[nb]AW[mb]AW[lb]AW[jb]AW[od]AW[oc]AW[pc]AW[qc]AW[rd]AW[re]AW[ea]AW[jc]AB[kh]AB[lg]AB[mg]AB[nf]AB[oe]AB[pd]AB[qe]AB[pf]AB[rf]AB[qg]AB[pa]AB[nc]AB[nd]AB[md]AB[lc]AB[ld]AB[le]AB[jd]AB[hd]AB[hc]AB[kb]AB[ka]AB[gb]AB[fb]AB[fc]AB[ec]AB[ed]AB[dc]AB[ad]AB[ae]AB[be]AB[ce]AB[de]AB[cf]AB[bg]AB[bh]AB[ke]LB[jb:a]LB[ka:b]LB[jc:c]C[White has attacked with 'a' and 'c' while black blocked at 'b'. Black to play and live with two eyes.]FF[4]GM[1]AP[Jago:Version 4.18]GN[temp2] (;B[kc];W[id] (;B[ic];W[hb];B[ie];W[ib];B[id];W[je];B[kd];W[mc] (;B[ha];W[la]) (;B[ia];W[la]) (;B[ja];W[la])) (;B[hb];W[ic] (;B[je];W[ie];B[ja];W[ib];B[ia];W[fa]) (;B[ja];W[je]) (;B[fa];W[je])) (;B[ib];W[ic] (;B[hb];W[je];B[ja];W[ie]) (;B[je];W[hb]) (;B[ja];W[hb] (;B[ha];W[je]) (;B[fa];W[ia]) (;B[je];W[ia])) (;B[ha];W[ja])) (;B[je];W[hb])) (;B[kd];W[id] (;B[ic];W[hb];B[ie];W[ib];B[id];W[kc] (;B[ha];W[la]) (;B[ia];W[la]) (;B[ja];W[la])) (;B[hb];W[ic];B[ib];W[ja]) (;B[ib];W[ic] (;B[hb];W[ja]) (;B[ha];W[ja])) (;B[je];W[kc] (;B[ic];W[hb];B[ie];W[ib]) (;B[hb];W[ic]) (;B[hb];W[ic]) (;B[ib];W[ic]))) (;B[je];W[kc] (;B[ib];W[ia] (;B[fa];W[ha] (;B[ic];W[ja]) (;B[kd];W[ja])) (;B[ha];W[ja] (;B[fa];W[la]) (;B[ic];W[la]) (;B[kd];W[la])) (;B[ic];W[ja] (;B[ha];W[la]) (;B[fa];W[ha])) (;B[kd];W[ja] (;B[ha];W[la]) (;B[fa];W[ha]))) (;B[ha];W[ib] (;B[fa];W[la]) (;B[ia];W[ja]) (;) (;B[ic];W[la]) (;B[id];W[la])) (;B[ia];W[ib] (;B[ha];W[ja]) (;B[hb];W[la]) (;B[fa];W[la])) (;B[ic];W[ib] (;B[ia];W[la]) (;B[hb];W[la])) (;B[fa];W[ib];B[ia];W[la])) (;B[ie];W[kc] (;B[ia];W[ib] (;B[ha];W[ja]) (;B[fa];W[la])) (;B[ib];W[ia] (;B[ha];W[ja] (;B[fa];W[la]) (;B[ic];W[la])) (;B[ic];W[ja] (;B[ha];W[la]) (;B[fa];W[ha])) (;B[kd];W[ja] (;B[ha];W[la]) (;B[fa];W[ha]))) (;B[ja];W[ia] (;B[ib];W[ha];B[ic];W[la]) (;B[ha];W[ib])) (;B[ha];W[ib] (;B[ia];W[ja]) (;B[fa];W[la]))) (;B[id];W[kc] (;B[ib];W[ia] (;B[ha];W[ja] (;B[ic];W[la]) (;B[kd];W[la]) (;B[fa];W[la])) (;B[fa];W[ha] (;B[kd];W[ja]) (;B[ic];W[ja]) (;B[hb];W[ja])) (;B[ja];W[la];B[ha];W[ja])) (;B[ia];W[ib] (;B[ha];W[ja]) (;B[fa];W[la])) (;B[ha];W[ib] (;B[ia];W[ja]) (;B[fa];W[la])) (;B[fa];W[ib] (;B[ia];W[la]) (;))) (;B[ic];W[kc] (;B[ib];W[ja] (;B[ia];W[la] (;B[fa];W[ha]) (;B[ha];W[fa])) (;B[ha];W[fa]) (;B[fa];W[ia])) (;B[ia];W[ib] (;B[hb];W[la]) (;B[ja];W[ha]) (;B[fa];W[la])) (;B[fa];W[ib];B[ia];W[la]) (;B[ha];W[ib];B[ia];W[ja])) (;B[ib];W[kc] (;B[kd];W[ja];B[ia];W[la] (;B[fa];W[ha]) (;B[ha];W[fa])) (;B[ic];W[ja];B[ia];W[la] (;B[ha];W[fa]) (;B[fa];W[ha])) (;B[ha];W[ja] (;B[fa];W[ic]) (;B[ic];W[la];B[fa];W[ia]) (;B[ia];W[ic])) (;B[fa];W[ja] (;B[ha];W[ia]) (;B[ia];W[ha]) (;B[ic];W[ia])) (;B[ia];W[ja];B[ic];W[la] (;B[ha];W[fa]) (;B[fa];W[ha])) (;B[ja];W[ha] (;B[fa];W[ia]) (;B[ga];W[ia];B[hb];W[ia];B[ha];W[la];B[ia];W[ie]C[Only one eye here.]) (;B[hb];W[ia];B[ga];W[ia];B[ha];W[la];B[ia];W[ie]C[Only one eye here.]) (;B[ia];W[fa] (;B[kd];W[ga] (;B[ie];W[je];B[ic];W[jc]) (;B[je];W[ie]) (;B[ic];W[jc] (;B[ie];W[je]) (;B[je];W[ie]))) (;B[ic];W[ga] (;B[kd];W[jc] (;B[ie];W[je]) (;B[je];W[ie])) (;B[ie];W[je];B[kd];W[jc]) (;B[je];W[ie];B[kd];W[jc])) (;B[id];W[ga]) (;B[je];W[ga] (;B[ie];W[ic]C[seki]) (;B[ic] (;W[ie];B[kd];W[jc]) (;)) (;B[kd];W[ie])) (;B[ie];W[ga] (;B[je];W[ic]C[seki]) (;B[ic] (;W[je];B[kd];W[jc]) (;)) (;B[kd];W[je];B[ic];W[jc])) (;B[ga];W[id] (;B[je];W[ic] (;B[ie];W[hb];B[hc];W[hd]) (;B[kd];W[ie])) (;B[ie]) (;B[kd];W[je];B[ic]C[RIGHT]) (;B[ic];W[la] (;B[hb]C[RIGHT]) (;B[kd]C[RIGHT]) (;B[ie];W[je] (;B[hb]C[RIGHT]) (;B[id]C[RIGHT]) (;B[kd]C[RIGHT])))) (;B[hb];W[ga] (;B[je];W[da] (;B[ie];W[ic]C[seki]) (;B[kd];W[ie]) (;B[ic];W[ie];B[kd];W[jc])) (;B[ie];W[da] (;B[je];W[ic]C[seki]) (;B[ic];W[je];B[kd];W[jc])) (;B[kd];W[da] (;B[ic];W[jc] (;B[ie];W[je]) (;B[je];W[ie])) (;B[ie];W[je];B[ic];W[jc]) (;B[je];W[ie])) (;B[ic];W[ie]) (;B[da];W[db] (;B[eb]C[RIGHT]) (;B[je];W[ca];B[ie];W[ic]C[seki]) (;B[ie];W[ca];B[je];W[ic]C[seki])))) (;B[ic];W[ia];B[kd]C[Black has 'a' , 'b' or 'c' for his second eye RIGHT]LB[fa:a]LB[ga:b]LB[jc:c]) (;B[kd];W[ia];B[ic]LB[fa:a]LB[ga:b]LB[jc:c]C[Black has 'a', 'b' or 'c' for his second eye. RIGHT]))) (;B[ja];W[id] (;B[ic];W[hb];B[ie];W[ib];B[id];W[kc] (;B[kd];W[je]) (;B[ha];W[la]) (;B[ia];W[la])) (;B[hb];W[je] (;B[ic];W[kd];B[kc];W[jd]) (;B[kd];W[ic])) (;B[ib];W[ic] (;B[hb];W[ie] (;B[kc];W[je]) (;B[je];W[kc]) (;B[fa];W[kc])) (;B[je];W[hb]) (;B[ha];W[ie] (;B[je];W[kc]) (;B[kc];W[je]) (;B[fa];W[kc]))) (;B[je];W[hb]) (;B[ha];W[ic];B[je];W[hb] (;B[kc];W[fa]) (;B[fa];W[kc]))) (;B[ia];W[ib] (;B[id];W[kc] (;B[ha];W[ja]) (;B[ja];W[ha]) (;B[hb];W[ja])) (;B[kc];W[id] (;B[je];W[hb]) (;B[hb];W[ic] (;B[je];W[ie] (;B[fa];W[ja]) (;B[ja];W[fa])) (;B[fa];W[ha] (;B[je];W[ie]) (;B[ja];W[ie])) (;B[ja];W[ie] (;B[je];W[fa]) (;B[fa];W[je]))) (;B[ic];W[hb]) (;B[je];W[hb]) (;B[ja];W[hb])) (;B[ic];W[hb] (;B[id];W[kc] (;B[ja];W[la]) (;B[ha];W[la]) (;B[kd];W[la])) (;)) (;B[hb];W[kc] (;B[ic];W[la]) (;B[kd];W[la]) (;B[ha];W[ja]) (;B[id];W[la]) (;B[fa];W[ja]) (;B[ja];W[ha];B[ga];W[la];B[ha];W[ic] (;B[je];W[ie]) (;B[ie];W[je]) (;))) (;B[ja];W[id] (;B[ic];W[hb]) (;B[hb];W[ic] (;B[je];W[ie] (;B[fa];W[kc]) (;B[kc];W[fa])) (;B[kc];W[ie] (;B[je];W[fa]) (;B[fa];W[je])) (;B[fa];W[ha] (;B[je];W[ie]) (;B[kc];W[ie]))) (;B[je];W[hb])) (;B[je];W[hb] (;B[id];W[kc] (;B[ja];W[la]) (;B[ha];W[la]) (;B[ic];W[la]) (;B[kd];W[la])) (;B[kc];W[id]) (;B[ja];W[id]) (;B[ha];W[id]))) (;B[hb];W[kc] (;B[ia];W[ja]) (;B[ja];W[ia]) (;B[ib];W[ja]) (;B[ic];W[ja])) (;B[ha];W[kc] (;B[ja];W[ib] (;B[ia];W[id] (;B[hb];W[ic]) (;B[ic];W[hb]) (;B[kd];W[ic])) (;B[hb];W[ia]) (;B[ic];W[ia]) (;B[id];W[ia]) (;B[fa];W[ia])) (;B[ib];W[ja] (;B[fa];W[ic]) (;B[ic];W[fa]) (;B[ia];W[fa])) (;B[ic];W[ib] (;B[ja];W[ia]) (;B[ia];W[ja]) (;B[fa];W[ja]) (;B[kd];W[ja])) (;B[ia];W[ja] (;B[ib];W[fa]) (;B[ic];W[fa]) (;B[fa];W[ib]))) (;B[fa];W[kc] (;B[ib];W[ja] (;B[ha];W[ia]) (;B[ia];W[ha]) (;B[ic];W[ia])) (;B[ia];W[ja] (;B[ib];W[ha]) (;B[ic];W[ib]) (;B[ha];W[ib]) (;)) (;B[ha] (;W[ib] (;B[ia];W[ja]) (;B[ja];W[ia]) (;B[id];W[ja])) (;)) (;B[ic];W[ja] (;B[ib];W[ia]) (;B[ia];W[ib]) (;B[ha];W[ib])) (;B[ja];W[ia] (;B[ib];W[la];B[ha];W[ja]) (;B[ha];W[ib]) (;B[ic];W[ib]))))