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#1 2007-06-04 10:45:03

CrazyPuzzler
Member
Registered: 2007-05-30
Posts: 19

Sudoku-5

I'm afraid to look as a fool, but I really want to learn how to solve puzzles. And if for battleships puzzles I can solve but it's alwais difficult for me, then for sudoku-5 (form the last puzzlebook) I really have no idea how to solve it. I can (I think I can smile ) to solve sudoku-killer puzzle. This puzzle seems to be similar but i cannot solve it at all. May be you can say me some first steps.

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#2 2007-06-04 10:59:12

forsmarts
Administrator
From: Minsk
Registered: 2007-05-29
Posts: 195
Website

Re: Sudoku-5

That is what CrazyPuzzler is talking about.
http://forsmarts.com/forum/img/puzzles/sudoku5_fpb5.gif

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#3 2007-06-04 11:21:58

CrazyPuzzler
Member
Registered: 2007-05-30
Posts: 19

Re: Sudoku-5

forsmarts wrote:

That is what CrazyPuzzler is talking about.

Yes, thank you. I hope admins will examine an attachment possibility and I would attach picture myself.

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#4 2007-06-05 00:28:02

jhrdina
Member
Registered: 2007-06-03
Posts: 42

Re: Sudoku-5

In the right grid I would start with the bottom left corner.
The sum in the two-number cage can be either 5 or 15. If you look at the cells (7,2),(7,3) in the (row,column) notation, the sum cannot be 5. The couple 1 - 4 is impossible because of the 4 in the middle of the 3x3 box and 2 - 3 is impossible because of 2 and 3 in the third column. You cannot use either of them in position (7,3).
So the sum of this cage is 15.
The sum in the L-shaped cage with number 4 is also 15. The remaining couple of numbers cannot give you 1 or 21. The only possibily is 11 (+4=15).
And finally the two-number cage in the corner  - cells (9,1),(9,2). If the sum in the cage was 15 the three cages would give you sum of 45 with two cell in the 3x3 box still left. So the sum must be 5 and we also know that we have to use numbers 2 and 3.
Back to the L-shaped cage we now know that the two numbers must be 5 and 6 (the only possibility with 2,3 and 4 already excluded).
Then the first cage must contain numbers 7 and 8 (the other option 6,9 cannot be used).
And the two remaining numbers in the box are 1 and 9.
We do not know the exact positions of the numbers yet, but for a start it is not bad.

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#5 2007-06-05 10:24:43

CrazyPuzzler
Member
Registered: 2007-05-30
Posts: 19

Re: Sudoku-5

Wow. Thank you. I do it. Then I will try the left one - it seems more difficult.

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#6 2008-01-30 10:04:19

Katherine
Member
Registered: 2008-01-28
Posts: 20
Website

Re: Sudoku-5

what's the rule?it means the sum of every cage should be 5,15,25,35?

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#7 2008-01-30 11:19:49

forsmarts
Administrator
From: Minsk
Registered: 2007-05-29
Posts: 195
Website

Re: Sudoku-5

Katherine wrote:

what's the rule?it means the sum of every cage should be 5,15,25,35?

Here are the rules as written in FPB-5.
Sudoku - 5
Fill in the grid so that every row, column and 3x3 box contains the digits 1 through 9. Sum of digits in all areas outlined by dots must end with 5.

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#8 2008-01-30 16:14:08

Katherine
Member
Registered: 2008-01-28
Posts: 20
Website

Re: Sudoku-5

forsmarts wrote:

Katherine wrote:

what's the rule?it means the sum of every cage should be 5,15,25,35?

Here are the rules as written in FPB-5.
Sudoku - 5
Fill in the grid so that every row, column and 3x3 box contains the digits 1 through 9. Sum of digits in all areas outlined by dots must end with 5.

thank you.it's same as i think.i will try to solve it.

Last edited by Katherine (2008-01-30 16:14:43)

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