| Friday (Friday, 8th September 2006) |
Envelope
Kwon-Tom Addict
Puzzles: 307
Best Total: 33m 49s | Posted - 2006.09.08 18:32:09
I had a little trouble on this Friday's puzzle. I got to a certain point and couldn't find any more definite patterns. I had to guess a lot near this point. What am I missing so I won't have to start guessing next time I get in this situation?
This is as far as I got before having to use fixed position and guessing.
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Jankonyex
Kwon-Tom Obsessive
Puzzles: 5680
Best Total: 9m 35s | Posted - 2006.09.08 19:16:41
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envelope
Kwon-Tom Addict
Puzzles: 307
Best Total: 33m 49s | Posted - 2006.09.09 00:59:25
Without having to work a bit out... or are those from direct patterns? if so, explain? |
prj
Kwon-Tom Obsessive
Puzzles: 2356
Best Total: 18m 20s | Posted - 2006.09.09 02:30:34
These aren't quite common patterns, but they require only a little reading ahead. (I had to a lot of FP on this one too, but once I'm presented with "this can be figured out", then I can usually figure it out.  I guess I'm not too good at choosing where to explore.)
The Xs between the 1-2 and 2-1 along the top have to be there because lines in either of those spots would have nowhere to go without overloading either the 1 or the 2.
Below those Xs, there must be Xs too - putting a line there would complete the neighboring 1, and leave only one way to solve the 2 above it, which would overload the 1 next to the 2.
The Xs leading down from the lines on the outsides of the 3s can't be lines because then there would be no way to satisfy both the 3 and the 2 above.
Putting a line at the right of the rightmost 1 along the top would lead to Xs on the other three sides, and then also aboe the 2, and on the northeast corner of the 1 below the 2, which is too many Xs around the 2. So there's another X.
The last X, on the 1 in the third row, is implied by the line going upwards. After you've got everything else above, an X in place of that line would would mean you can't solve both the 1 and the 2 along the top: putting a line above or below the 1 would mean you also need a line on the opposite side, overloading the 1; but a line on the left of the 1 would have nowhere to go at its top end without overloading either the 1 or the 2. |
Envelope
Kwon-Tom Addict
Puzzles: 307
Best Total: 33m 49s | Posted - 2006.09.09 12:45:44
Yeah, I see those.. I guess I just got to the point where I should have used more elimination approaches instead of pure guessing... I do see those x's, but I just didn't eliminate them by that logic when solving.. Thanks. |
