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weeder
Joined: 07 Jul 2006 Posts: 1
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Posted: Fri Jul 07, 2006 8:24 pm Post subject: July 3 very hard..stuck |
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OK..I know I am missing the obvious. Thanks
1B7F|E-8D|53--|----
-2-0|45F1|-79-|AD--
-5--|7263|D-1C|-F--
--4-|0-BC|-8-F|---7
-C--|F8-6|4-73|--0-
76-E|D0-2|9F--|43--
3F8-|54-B|2-E-|7--9
0-5-|37-E|---D|--F1
B0-7|C--4|8---|-A-F
4--1|-6-9|F--7|-85
--F8|---7|--09|2-4-
-9--|83-F|----|--7-
D---|2F30|-5--|-E--
F---|1ED8|---2|--A-
-8E3|-C45|--F-|B-1D
-1--|-B7A|ED-8|F-C3 |
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David Bryant
Joined: 29 Jul 2005 Posts: 559 Location: Denver, Colorado
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Posted: Fri Jul 07, 2006 11:19 pm Post subject: Column on block interaction |
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Hi, weeder! Welcome to the forum.
In the position you posted, you need to concentrate on column 9, and on box 15 (bottom row of 4x4 boxes, right of center).
-- The "0" in column 9 can only appear in box 15 -- that is, at r14c9 or at r15c9.
-- This means that you can eliminate "0" as a possibility at r15c10 & r15c12, in particular.
-- This reveals a triplet {6, 9, A} in row 15, leaving "2" as the sole candidate at r15c1. And right after that you'll find a "2" at r16c14 and a "0" at r16c3 ... that should be enough to get you rolling again. dcb
PS There's also a quintet of values {6, 8, B, C, D} lurking in five cells in box 8 (extreme right, second row of 4x4 boxes). That will allow you to identify r5c14 = 5 (sole candidate, after eliminating "B"). |
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Suppen
Joined: 05 Jun 2015 Posts: 4 Location: 3044 Marie Street Baltimore, MD 21202
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Posted: Thu Jun 18, 2015 8:39 am Post subject: July 3 very hard stuck |
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I consider, that you are not right. I am assured. Write to me in PM, we will communicate. |
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