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Pushing Numbers 2 (Posted on 2007-05-22) Difficulty: 4 of 5
Here is the first part of Pushing Numbers.

You need to make it so that all the numbers from 1 to 8 appear once in every row and column. You can only do that by "pushing" the columns down and the rows left. Each time you "push" a row or a column all the numbers in it move one block in the direction you have pushed it.

6

4

8

6

8

7

1

3

1

2

5

6

7

4

2

8

5

4

2

2

7

5

3

7

5

3

1

3

3

8

4

7

5

6

2

1

6

3

1

6

1

4

7

8

2

5

4

3

4

5

2

1

7

2

1

3

6

4

8

7

8

6

5

8

Can you do it?

No Solution Yet Submitted by Assaf    
Rating: 3.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Where to start | Comment 1 of 6
I note that a certain amount of care must be taken here.

My reference is from the left.
In column 7 there are 4 5's; because of placement the 1st or 2nd one must occupy row 1.

Column 3 has 3 7's with nothing to the left but void. The 7 for row 6 is the last of the row; note that column 8 has a 7 at its head.

There are similar 'traps' here for which I do not currently have the time to explore.

  Posted by brianjn on 2007-05-23 04:46:05
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