A Number Puzzle

sean9991 · 发表于 2005-9-20 22:24:47

The objective is to fill in the blanks with numbers 1 - 9 such that:

1) Each digit appears exactly once on each row.

2) Each digit appears exactly once on each column.

3) The whole board can be seperated into 9 (NINE) 3x3 squares. Make sure each digit appears exactly once within each 3x3 square.

Usually there is a limit of 10 -15 minutes to solve a puzzle (hard one). If this is the first time you play, it could take longer to get the hang of it.

Here is one, substitute x with number 1 - 9:

x,x,x,6,x,x,x,5,x

x,x,1,x,x,7,x,6,x

x,x,7,x,4,x,x,1,x

x,x,5,4,x,x,x,x,8

7,x,x,x,1,2,x,x,3

2,x,x,3,x,x,5,x,x

x,3,x,x,2,x,1,x,x

x,5,x,8,x,x,4,x,x

x,7,x,x,x,9,x,x,x

yma16 · 发表于 2005-9-22 09:24:26

BTY, what software did you use to draw the picture for 20 dots forming 21 lines? It is a beauty.

sean9991 · 发表于 2005-9-22 17:56:13

I used just Microsoft paint. It gives the coordinate of your mouse when you left-click, so a little calculation and rounding to the closest integer should work perfectly.

ob · 发表于 2005-9-22 23:55:06

4,2,3,6,8,1,9,5,7www.ddhw.com

5,9,1,2,3,7,8,6,4

6,8,7,9,4,5,3,1,2www.ddhw.com

3,1,5,4,9,6,7,2,8

7,4,8,5,1,2,6,9,3

2,6,9,3,7,8,5,4,1www.ddhw.com

9,3,6,7,2,4,1,8,5

1,5,2,8,6,3,4,7,9

8,7,4,1,5,9,2,3,6

sean9991 · 发表于 2005-9-23 00:56:08

There should not be any SuDoku problem that can challenge you.

husonghu · 发表于 2005-9-23 03:46:43

hehe,what's Su Do Ku(meaning,in Chinese)?

sean9991 · 发表于 2005-9-23 17:13:17

Actually it's Japanese Kanzi (Chinese Character). Su is 数 (Number), Doku is 独 (isolated, single).

husonghu · 发表于 2005-9-23 18:32:54

Thanks.

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A Number Puzzle

It is a Su Do Ku.

回复：It is a Su Do Ku.

Got it finally. it took me long to figure it out[:

[@};-]Congrats![@};-]

hehe,what's Su Do Ku(meaning,in Chinese)?[:>]

回复：hehe,what's Su Do Ku(meaning,in Chinese)?[:>]

Thanks.