Problem	9121
Created	2006-09-05
Source	9112
Rating

Difficulty	27.1 kyu
Average Solve Time	25 secs
User Attempts	22058 / 29819
Solve Ratio Rating	20 kyu
	rating history

Rectangular six in the corner with surrounding stones unsettled. 5-2-09 Removed the Bt14 stone.

(;AW[qa]AW[qb]AW[qc]AW[qd]AW[rd]AW[sd]AB[pa]AB[pb]AB[pc]AB[pd]AB[pe]AB[qe]AB[se]AB[qf]AB[qg]AB[od]AB[oc]AB[oa]AW[na]AW[nb]AW[nc]AW[nd]AW[of]AW[og]AW[oh]AW[qi]AW[qj]AW[rg]AB[re]AW[sh]AB[rj]AW[ri]AW[ne]AP[goproblems] (;W[ra];B[sb]MA[rc]MA[rb]MA[sb]MA[sa]MA[sc]C[Wrong; now white needs to kill black before black kills the wR16 group.];W[ob];B[rb];W[oe];B[sa];W[pf];B[sc];W[rc];B[sb];W[qh];B[sc];W[pg];B[sa];W[rb];B[sb];W[sg];B[sc];W[sa];B[sb];W[sc];B[sb]) (;W[rb]MA[sc]MA[sb]C[T17 and T18 are miai for white.RIGHT]AB[sf]) (;W[rc];B[sb]MA[rb]MA[ra]MA[sa]MA[sb]MA[sc]C[You just killed yourself. You are left with a bulky five shape inside and black has enough liberties to kill the white R16 group.];W[ob];B[rb];W[qh];B[ra]C[Atari]) (;W[sc];B[rb]MA[rc]MA[rb]MA[sb]MA[sa]MA[ra]C[You killed yourself. You are left with a killable bulky five shape inside. Black has enough outside liberties to kill.];W[ob];B[sb];W[oe];B[ra]C[Atari]) (;W[sb]C[RIGHT]) (;W[sa];B[rb]MA[rc]MA[sc]MA[sb]MA[ra]C[You killed yourself. You have a bulky five killable shape inside. Black has enough liberties to kill.];W[ob];B[ra];W[pf];B[sc]C[Atari]) (;W[ob]C[];B[rb]C[No, this doesn't work. Play it out if you don't see why.] (;W[oe];B[ra] (;W[pf] (;B[sc]C[AtariCHOICE]) (;B[rc]C[AtariCHOICE])) (;W[sb] (;B[rc]C[Atari]) (;B[sc];W[rc];B[sc]C[Snapback])) (;W[rc];B[sc])) (;W[ra];B[sc] (;W[sb];B[sa]C[Ko];W[sb]C[NOTTHIS]) (;W[oe];B[sa]C[Atari];W[sb]C[Ko];B[sa]C[NOTTHIS])) (;W[rc];B[ra]C[Atari]) (;W[sc];B[sb];W[oe];B[ra]C[Atari]) (;W[sb];B[ra];W[oe] (;B[rc]C[Atari]) (;B[sc]C[Atari];W[rc];B[sc]C[Snapback])) (;W[pf];B[ra]) (;W[pg];B[ra]) (;W[ph];B[ra]) (;W[qh];B[ra];W[oe]LB[ng:T];B[ng]C[Black tenukis];W[pf]LB[nh:T];B[nh]C[Black tenukis];W[pg] (;B[rc]C[CHOICE]) (;B[sc]C[CHOICE]))) (;W[oe];B[rb] (;W[ra];B[sc];W[sb];B[sa]C[Ko]) (;W[rc];B[ra]C[Atari]MA[qa]MA[qb]MA[qc]MA[rc]MA[qd]MA[rd]MA[sd]) (;W[sb];B[ra]) (;W[sg];B[ra];W[ob]LB[nf:T];B[nf]C[Black tenukis.];W[pf]LB[ng:T];B[ng]C[Black tenukis.];W[pg] (;B[rc]C[AtariCHOICE]MA[qa]MA[qb]MA[qc]MA[qd]MA[rd]MA[sd]) (;B[sc]C[Atari]MA[qa]MA[qb]MA[qc]MA[qd]MA[rd]MA[sd])) (;W[pf];B[ra]) (;W[qh];B[ra])) (;W[pf];B[rb] (;W[ra];B[sc];W[pg];B[sa]C[Atari];W[sb]C[Ko];B[sa]C[NOTTHIS]) (;W[qh];B[ra]) (;W[rf];B[ra]) (;W[sb];B[ra] (;W[rc];B[sc]) (;W[ob] (;B[sc]C[CHOICE];W[rc];B[sc]) (;B[rc]C[CHOICE])))) (;W[pg];B[rb] (;W[ra];B[sc] (;W[sb];B[sa]C[Ko];W[sb]C[NOTTHIS]) (;W[ob];B[sa]C[Atari];W[sb]C[Ko];B[sa]C[NOTTHIS])) (;W[sb];B[ra]) (;W[qh];B[ra])) (;W[qh];B[rb] (;W[ra];B[sc];W[ob];B[sa]C[Atari];W[sb]C[Ko];B[sa]C[NOTTHIS]) (;W[sb];B[ra] (;W[rc];B[sc]) (;W[ob]LB[nh:T];B[nh]C[Black tenukisCHOICE];W[oe]C[]LB[ni:T];B[ni]C[Black tenukisCHOICE];W[pf] (;B[sc]C[CHOICE];W[rc];B[sc]) (;B[rc]C[Atari; marked stones die.]MA[qa]MA[qb]MA[qc]MA[qd]MA[rd]MA[sd]MA[sb])) (;W[sa];B[sc]C[Atari]MA[qa]MA[qb]MA[qc]MA[qd]MA[rd]MA[sd]) (;W[sg] (;B[sc]C[CHOICE];W[rc];B[sc]C[Snapback]) (;B[rc]C[AtariCHOICE]MA[qa]MA[qb]MA[qc]MA[qd]MA[rd]MA[sd]))) (;W[ob];B[ra];W[oe]LB[ng:T];B[ng]C[Black tenukis];W[pf]LB[nh:T];B[nh]C[Black tenukis];W[pg] (;B[rc]C[CHOICE]) (;B[sc]C[CHOICE])) (;W[pf];B[ra]) (;W[pg];B[ra]) (;W[rc];B[ra]C[Atari]MA[qa]MA[qb]MA[qc]MA[rc]MA[qd]MA[rd]MA[sd]) (;W[ph];B[ra]) (;W[sg];B[ra])) (;W[rf];B[rb] (;W[ra];B[sc];W[ob];B[sa]C[Atari];W[sb]C[Ko];B[sa]C[NOTTHIS]) (;W[sb];B[ra]) (;W[rk];B[ra])) (;W[sg];B[rb] (;W[ra];B[sc] (;W[ob];B[sa]C[Atari];W[sb]C[Ko];B[sa]C[NOTTHIS]) (;W[sb];B[sa]C[Ko];W[sb]C[NOTTHIS])) (;W[sb];B[ra])) (;W[mb];B[rb];W[ob];B[ra]) (;W[ph];B[rb] (;W[ob];B[ra]) (;W[ra];B[sb];W[ob];B[sa];W[oe];B[sc];W[rc];B[sb];W[pf];B[rb];W[qh];B[sa];W[sc];B[sb];W[pg];B[rb] (;W[rf];B[sa]) (;W[sa];B[sb];W[rb];B[sb])) (;W[rc];B[ra]C[Atari]MA[qa]MA[qb]MA[qc]MA[rc]MA[qd]MA[rd]MA[sd]) (;W[sb];B[ra]) (;W[rf];B[ra]) (;W[qh];B[ra])) (;W[rh];B[rb] (;W[ob];B[ra]) (;W[sb];B[ra])) (;W[sj];B[rb];W[ob];B[ra]) (;W[rk];B[rb] (;W[ob];B[ra]) (;W[ra];B[sb];W[ob];B[sa];W[oe];B[sc];W[rc];B[sb];W[pf];B[sa];W[pg];B[sc];W[rb];B[sb];W[qh];B[sc];W[sa];B[sb] (;W[sc];B[sb]) (;W[rf];B[sc])) (;W[sb];B[ra]) (;W[rf];B[ra]) (;W[sj];B[ra])))