invalid problem set
Problem 312
Created 2000-12-13
Name Weak Shoulders
Source A game I played, December 2000.
Rating
Difficulty 22.7 kyu
Average Solve Time 26 secs
User Attempts
27613 / 44341
Solve Ratio Rating 15 kyu
rating history
White can take the Black group in the corner.
This suprised me. I thought Black was alive in the corner. But late in the endgame, i wanted a ko threat, and played a stone that killed the whole group.
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FF[4]
GM[1]
SZ[19]
AP[Jago:Version 4.34]
AB[mn][lo][nl][lm][nm][nn][oo][pr][ns][nr][oq][op][pp][qp][qq][rr][rs][ss][ko]
AW[kp][lp][np][mo][no][om][on][qm][po][qo][so][rp][sr][sq][rq][nq][mq][mr][ms]
C[White to kill]
GN[Clipboard Content]
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W[qr]
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B[qs]
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W[os]
;
B[or]
(
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W[qs]
;
B[qr]
)
(
;
W[ps]
;
B[qs]
)
(
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W[qr]
;
B[qs]
)
)
(
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W[qs]
;
B[qr]
(
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W[os]
;
B[or]
)
(
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W[or]
;
B[os]
)
(
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W[ps]
;
B[os]
)
)
(
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W[ps]
(
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B[or]
C[CHOICE]
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W[qr]
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B[qs]
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W[qr]
C[RIGHT
Q1 set up a snapback.]
TR[ps]
)
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W[qs]
;
B[qr]
)
(
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W[os]
;
B[qs]
)
)
(
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B[qr]
C[CHOICE]
(
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W[or]
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B[os]
;
W[or]
C[RIGHT
Q1 prepared the snapback.]
TR[ps]
)
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W[os]
;
B[or]
)
(
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W[qs]
;
B[os]
)
)
)
(
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W[or]
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B[os]
)
)
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