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submitting questions

Submitted by: kevin

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Looks like Kevin had fun when at Grandpa's!
25/Sep/09 12:07 AM
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Hello Kevin! Good to see you again!
25/Sep/09 12:24 AM
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Big game for a little guy.
25/Sep/09 12:40 AM
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Not too tough.
UP 23 -> 27 with basic techniques. Note pair 48 in b28.
1) a chain involving rows 4 and 6 forbids 6 and 9 from the cell c6 => b6=9, and UP? (forgot)
2) a chain involving rows 1 and 2 forbids 8 from h2
=> UP81
25/Sep/09 12:49 AM
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Shh, Kevin's concentrating ...
25/Sep/09 1:55 AM
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Jyrki's idea:
1) Start at 23, basic techniques to UP=27
2)(6=1)b4-(1=5)h4-(57=6)hi6,=>g4b6<>6.UP=29
3)YW-style:(8=4)b2-c1=(4-7)e1=(7)a1,=&g t;a1<>8.UP=81
25/Sep/09 2:22 AM
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For step 3 Jyrki's idea is:
YW-style:(8=4)b2-(4=5)c1-hi1=(5)h2,=>h2<>8.UP==81
25/Sep/09 2:37 AM
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Ditto Vici
25/Sep/09 4:40 AM
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You can also do it in this order:
h8=8,whether b2=4 or 8.UP36. Then:
i6=5,whether d6=2 or 6.UP81.
25/Sep/09 8:28 AM
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Well done, Alfred! I worked thru your logic during my coffee break :-). I would love to learn to spot that kind of occasions (a consequence shared by both alternatives of a dual choice). It does appear every now and then. Vaguely recall spotting one here about two weeks ago.
25/Sep/09 9:06 PM
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When I can do the tough ones, I feel so smart. When I can't I feel so dumb. Today I'm smart!
25/Sep/09 10:26 PM
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35:29
01/Oct/09 9:05 AM
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SE=7.1
10/Sep/10 7:03 AM
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