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Problem | 15725 |
Created | 2012-01-18 |
Source | Variation on problem 15724 |
Rating | |
Difficulty | 9.7 kyu |
Average Solve Time | 58 secs |
User Attempts |
1130 / 3252 |
Solve Ratio Rating | 5 kyu |
| rating history |
If Black plays at O18, what can White do?
(;AB[la]AB[lb]AB[kc]AB[kd]AB[ld]AB[md]AB[nd]AB[nc]AB[oc]AW[ka]AW[kb]AW[jb]AW[jc]AW[jd]AW[ke]AW[jf]AW[me]AW[ne]AW[od]AW[pd]AW[pc]AW[pb]AB[nb]TR[nb]AW[lc]C[Actually there are 2 ways to kill Black.]AP[goproblems]
(;W[mc]
(;B[oa]
(;W[ob]C[One eye.CHOICERIGHT]MA[mb]MA[na])
(;W[mb];B[ma]
(;W[mc];B[ob])
(;W[ob];B[mc]))
(;W[ma];B[mb])
(;W[na];B[ob])
(;W[pa];B[ob]))
(;B[ob];W[oa]C[RIGHT])
(;B[mb];W[na]C[RIGHT]))
(;W[mb];B[mc]
(;W[na];B[oa])
(;W[ma];B[na])
(;W[oa];B[na])
(;W[ob];B[na]))
(;W[ma];B[mb]
(;W[na];B[oa])
(;W[oa];B[na])
(;W[ob];B[na]))
(;W[na]
(;B[oa]
(;W[ob];B[mc]
(;W[ma]C[A false eye. If Black takes you can throw in at O19.RIGHT])
(;W[pa];B[ma]))
(;W[mb];B[mc])
(;W[mc];B[ob])
(;W[ma];B[mb])
(;W[pa];B[ob]))
(;B[ob];W[oa]C[RIGHT])
(;B[mc];W[ma]C[RIGHT]))
(;W[oa];B[na])
(;W[ob];B[na])
(;W[le];B[mc])
(;W[pa];B[na]))
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