2 solutions to one puzzle

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2 solutions to one puzzle

I've just run a Medium Game, and found there were two solutions to the puzzle. The game is 45828 with the following grid

453798216
879126534
126354798
931562847
768941325
542873961
6*5637*82
384215679
2*7689*53

The first missing numbers are 1 or 9, 2nd = 1 or 4, 3rd = 1 or 9 and 4th = 1 or 4

Could this be normal, as I though the system generated only games which had only one solution ??
Yellowbelly

Posts: 14
Joined: 06 June 2005

Last time I checked the Pappocom software did not number games... so where did you get it from?
Animator

Posts: 469
Joined: 08 April 2005

I took the number from the 1st 5 clues. I believe you can type these numbers in and get the solution. Hence my reason for including them
Yellowbelly

Posts: 14
Joined: 06 June 2005

Nope, and that's also what the solutions page says:

Don't use this page for puzzles generated by the Sudoku program. The program knows the answer to any puzzle it makes up. It will show you the solution if you ask for it.

Row 7 has the number 6 twice, Box 8 has the number 6 twice aswell...
Animator

Posts: 469
Joined: 08 April 2005

SOrry that was a Typeing error. it should read 6*5437*82.

I am only using the numbers as a Ref, so if required the board can be checked. I did not use the number to generate a puzzle I left that up to the program.

The actual puzzle was generated at random.

I am just pointing out that there is a puzzle with two possible answers, and I was wondering if this should be true or not. If not true then is it a bug in the program (hence my quoting the number so people could find it)
Yellowbelly

Posts: 14
Joined: 06 June 2005

Row 7 is missing the numbers 1 and 9, the number 9
cannot go in r7c7 because box 9 already has the number 9 in r8c9.
Animator

Posts: 469
Joined: 08 April 2005

Your right I total missed that.

Sorry
Yellowbelly

Posts: 14
Joined: 06 June 2005

double solution

I think I just got a double solution Puzzle

958371264
327964851
641825793
492736518
163458972
875192346
789613425
236547189 or 536247189
514289637 or 214589637

whats up?
spamoni

Posts: 4
Joined: 18 September 2005

Nothing. Where'd you get it?
Karyobin

Posts: 396
Joined: 18 June 2005

Got this puzzle from today's Washington Post, my last 4 open spots were all either 5 or 2. I guess a "rule" has been broken.
spamoni

Posts: 4
Joined: 18 September 2005

re: two answers?? (The Washington Post 2005.Sep.18)

.

spamoni wrote:I think I just got a double solution puzzle

Code: Select all
`958371264327964851641825793492736518163458972875192346789613425236547189 or 536247189514289637 or 214589637`

it would help if you could post the original puzzle
as given in The Washington Post
which we don't all have

.

Pat

Posts: 3674
Joined: 18 July 2005

Here is the original:

x5xxx12xx
x2x9xx8xx
6x1xxxxx3
4xxx3xxxx
x6xx5xx7x
xxxx9xxx6
7xxxxx4x5
xx6xx7x8x
xx48xxx3x
spamoni

Posts: 4
Joined: 18 September 2005

The left-hand "solution" you posted is not valid because you have replaced one of the original given numbers - the 8, fourth along on the bottom row - with a 2. The right-hand one is not valid because you have replaced it with a 5.
zebedeezbd

Posts: 60
Joined: 14 September 2005

That puzzle has one unique solution, but it isn't wither of the ones you posted above. My guess is that you made a copy of the puzzle, and accidentally moved the given 8 in the bottom row one space to the right, making a different puzzle that has lots of possible solutions.
PaulIQ164

Posts: 533
Joined: 16 July 2005

You've got an '8' at r9c4 in that last post. In neither of your earlier offerings was this cell an 8. This leads to a misplaced '8' and '2' in the third row as well, in columns 4 and 5. That's yer problem.

[5 seconds later - Curses! Thwarted.]
Karyobin

Posts: 396
Joined: 18 June 2005

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