Problem 6606 goproblems.com


Author	LCZLAPINSKI	Created	2005-06-02
Difficulty	27 kyu (history)	Source	LCzlapinsk[21k] vs. gonecrazy[20k] on KGS
AVG solve time	18 sec	Stars	3.8 (25 votes)
User attempts	23986 / 33042	Collections	Basic Shape, Corner based
Genre	life and death	Your attempts	N/A
Similar problems
Created	2005-06-02
Source	LCzlapinsk[21k] vs. gonecrazy[20k] on KGS
Stars	3.8 (25 votes)
Collections	Basic Shape, Corner based
Your attempts	N/A

(;AW[an]AW[bn]AW[cn]AW[dn]AW[en]AW[fo]AW[bo]AW[do]AW[ep]AW[fq]AW[fr]AW[fs]AW[er]AB[ao]AB[ap]AB[bp]AB[cp]AB[co]AB[dp]AB[dq]AB[eq]AB[dr]AB[ds]AB[es]LB[gm:T]C[Play T if you wish to tenuki]AP[goproblems] (;B[br]C[RIGHT]) (;B[bs];W[br] (;B[ar];W[bq] (;B[aq]C[RIGHT]) (;B[cr]C[RIGHT]) (;B[cq]C[RIGHT]) (;B[cs];W[aq]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.])) (;B[bq] (;W[ar];B[cr]C[RIGHT]) (;W[cr];B[ar]C[RIGHT])) (;B[cr] (;W[ar];B[bq]C[RIGHT]) (;W[bq];B[ar]C[RIGHT]))) (;B[ar];W[br] (;B[bs];W[bq] (;B[aq]C[RIGHT]) (;B[cr]C[RIGHT]) (;B[cq]C[RIGHT]) (;B[cs];W[aq]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.])) (;B[as];W[bs] (;B[aq];W[cr]) (;B[bq];W[cr] (;B[cs];W[aq];B[ar]C[Gote seki.]) (;B[cq];W[aq];B[ar]C[Gote seki])) (;B[cr];W[bq];B[aq]C[Gote seki])) (;B[aq];W[cr] (;B[bs];W[cs]C[10000 year ko. Neither side wishes to connect it nor play B3 or C3 and have the other side retake the ko.]) (;B[cs];W[bs];B[bq]C[Gote seki]) (;B[bq];W[cs];B[bs];W[as]C[Ko]) (;B[cq];W[bs])) (;B[bq];W[cr];B[bs]C[RIGHT]) (;B[cr];W[bs];B[bq]C[RIGHT]) (;B[cq];W[bs];B[bq];W[as]C[10000 year ko. Neither side wishes to connect it nor play C1 or C2 and have the other side retake the ko.]) (;B[cs];W[bq] (;B[as];W[aq]) (;B[aq];W[bs]C[];B[cr]C[Gote seki]) (;B[cr];W[aq];B[bs];W[as]C[Ko]) (;B[cq];W[bs]C[]MA[cr]) (;B[bs];W[aq]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.]))) (;B[as];W[br] (;B[bq];W[cr];B[ar];W[bs] (;B[cq];W[aq];B[ar]C[Gote seki]) (;B[cs];W[aq];B[ar]C[Gote seki.])) (;B[cr];W[bq];B[bs];W[ar] (;B[aq];W[cs];B[bs]C[Gote seki]) (;B[cq];W[cs];B[bs]C[Gote seki]))) (;B[aq];W[br];B[bs];W[cr] (;B[cs];W[ar];B[bq]C[Gote seki]) (;B[ar];W[cs]C[10000 year ko. Neither side wishes to connect it nor play B3 or C3 and have the other side retake the ko.]) (;B[bq];W[cs];B[ar];W[as]C[Ko]) (;B[cq];W[ar])) (;B[bq];W[br] (;B[ar];W[cr];B[bs]C[RIGHT]) (;B[bs] (;W[ar];B[cr]C[RIGHT]) (;W[cr];B[ar]C[RIGHT])) (;B[cr] (;W[ar];B[bs]C[RIGHT]) (;W[bs];B[ar]C[RIGHT])) (;B[as];W[cr];B[ar];W[bs] (;B[cq]) (;B[cs]))) (;B[cq];W[br];B[ar];W[bs];B[bq];W[as]C[10000 year ko. Neither side wishes to connect it nor play C1 or C2 and have the other side retake the ko.]) (;B[cr];W[br] (;B[ar];W[bs];B[bq]C[RIGHT]) (;B[bq] (;W[ar];B[bs]C[RIGHT]) (;W[bs];B[ar]C[RIGHT])) (;B[bs] (;W[ar];B[bq]C[RIGHT]) (;W[bq];B[ar]C[RIGHT]))) (;B[cs];W[br];B[ar];W[bq] (;B[as];W[aq]) (;B[aq];W[bs]C[];B[cr]C[Gote seki]) (;B[cr];W[aq];B[bs];W[as]C[Ko]) (;B[cq];W[bs]C[]MA[cr]) (;B[bs])) (;B[gm]C[];W[br]C[The tenuki costs black at least 8 points locally. Bb2 secures the corner.] (;B[ar];W[cr] (;B[bs];W[cs] (;B[bq];W[as]C[Ko]) (;B[aq];W[as]C[Ko])) (;B[cs];W[bs];B[bq]C[Gote seki.]) (;B[bq];W[bs];B[cs]C[Gote seki]) (;B[aq];W[cs];B[bs];W[as]C[Ko]) (;B[cq];W[cs] (;B[bq];W[aq]) (;B[aq];W[bs]) (;B[bs];W[as]C[Ko]) (;B[as];W[bq])) (;B[as];W[bq] (;B[bs];W[aq]) (;B[cq];W[aq]))) (;B[as] (;W[bq] (;B[ar];W[bs]C[] (;B[aq];W[cr]C[Black is dead.]) (;B[cs];W[aq]) (;B[cq];W[cr]C[Black is dead.])) (;B[aq];W[bs]C[] (;B[ar];W[cr]C[Black is dead.]) (;B[cs];W[ar]LB[gn:T]) (;B[cr];W[ar]C[Black is dead. One eye versus no eyes.]) (;B[cq];W[ar]C[Black is dead. One eye versus no eyes.])) (;B[bs];W[cr] (;B[ar];W[aq]) (;B[cq];W[cs])) (;B[cs];W[bs]C[One eye versus none.CHOICE]) (;B[cr];W[bs]C[One eye versus none.]) (;B[cq];W[bs])) (;W[ar] (;B[aq];W[cr]C[]) (;B[bs];W[cr] (;B[cs];W[bq]) (;B[bq];W[cs])) (;B[bq];W[cr]LB[gn:T];B[gn];W[cs]C[]) (;B[cs];W[bs] (;B[aq]) (;B[bq];W[cr]C[Black is dead. One eye versus no eyes.])) (;B[cr];W[bq] (;B[aq]) (;B[bs];W[cs];B[bs]C[Gote seki]) (;B[cq];W[bs])) (;B[cq];W[bs]C[Black is dead. One eye versus two eyes.])) (;W[bs];B[ar];W[aq])) (;B[aq];W[ar];B[as];W[cr]C[]) (;B[bs];W[bq] (;B[cr];W[ar];B[aq]C[Gote seki]) (;B[ar];W[aq] (;B[cs]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.]) (;B[as];W[cs]) (;B[cr];W[as]C[Ko]) (;B[cq];W[as]C[Ko])) (;B[cs];W[aq] (;B[ar]C[10000 year ko. Neither side wants to connect it nor play C2 or C3 to let the other side take first in the then direct ko.]) (;B[as];W[ar]) (;B[cr];W[ar]) (;B[cq];W[ar])) (;B[aq];W[ar] (;B[cr]C[Gote seki]) (;B[cq];W[cr]) (;B[cs];W[cr]) (;B[as])) (;B[cq];W[ar] (;B[cr]C[Gote seki]) (;B[aq];W[cr]) (;B[cs];W[aq])) (;B[as];W[cr] (;B[ar]) (;B[cq];W[cs]))) (;B[bq];W[cr] (;B[ar];W[bs];B[cs]C[Gote seki]) (;B[bs];W[cs];B[ar];W[as]C[Ko]) (;B[cs];W[ar] (;B[bs]C[Gote seki]) (;B[cq];W[bs]) (;B[aq];W[bs]) (;B[as])) (;B[cq];W[cs]) (;B[aq];W[ar])) (;B[cs];W[bs] (;B[as];W[bq]TR[ar]TR[aq]C[Wa2 and Wa3 are miai for killing black with one eye versus none.]) (;B[ar];W[bq]C[] (;B[as];W[aq]) (;B[aq])) (;B[aq];W[bq]TR[ar]TR[cr]C[Wa2 and Wc2 are miai for killing black with a dead shape inside.]) (;B[bq];W[ar];B[cr]C[Seki]) (;B[cr];W[bq]TR[ar]TR[aq]C[Wa2 and Wa3 are miai for killing black with one eye versus none.]) (;B[cq];W[bq]TR[ar]TR[aq]C[Wa2 and Wa3 are miai for killing black with one eye versus none.])) (;B[cr];W[bq] (;B[bs];W[ar];B[aq]C[Gote seki]) (;B[ar];W[aq];B[bs];W[as]C[Ko]) (;B[aq];W[bs] (;B[ar]C[Gote seki]) (;B[cq];W[ar]) (;B[cs];W[ar]) (;B[as];W[ar]C[Black is dead. One eye versus no eyes.])) (;B[cq];W[aq]) (;B[cs];W[bs])) (;B[cq];W[ar] (;B[as];W[bs]C[Black is dead. One eye versus two eyes.]) (;B[aq];W[cr]C[]) (;B[bs];W[cr]MA[cs]MA[bq]) (;B[bq];W[cr]) (;B[cs];W[bs]C[One eye versus none.]) (;B[cr];W[bs]C[One eye versus none.]))))