For the Sudoku crowd
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07-01-2006, 02:08 AM
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07-01-2006, 06:36 PM
LOL!! I've got to show this one to my kids!! Good find! ▼
07-02-2006, 01:27 AM
I'm still trying to come up with an optimal algorithm to solve it. I was going to use Alpha-Beta tree pruning, but I hear that Negascout is more efficient. ▼
07-02-2006, 06:24 PM
I personally favor the "random drunk's walk over a cliff" algorithm to solve binary sudoku. You have to pass the output through an altitude filter to get bits out, but it's quite effective.
Regards,
07-02-2006, 06:42 PM
I just watched the World cup soccer game France vs. Brazil yesterday and got this Sudoku puzzle solved in 90 minutes (Sorry Luiz, Gerson & Nelson) :-) Can anyone beat this ? Etienne
Edited: 2 July 2006, 7:46 p.m. after one or more responses were posted ▼
07-02-2006, 07:15 PM
"Can anyone beat this ?" Assuming you are not talking about the soccer match (!), how about "unary" sudoku: You have a single square, and you can put a zero in it (or not, if you need to think about it for a while).
07-02-2006, 09:28 PM
Quote: Hello Etienne, I can't speak for Luiz & Nelson. Well, win some, lose some... as you say: c'est la vie... Best regards from Brazil, Gerson.
07-09-2006, 05:30 PM
Quote: Yes, we just did it! 6-4 ;-) Sorry dear french friends...
Greetings, ▼
07-09-2006, 06:04 PM
Congratulations! There is a typo in your post: we're not "french friends" but "french fries" now ;-) because we're fried... I think Italy definitely deserved to win, both for their global performance and for this last game!! See you in the rugby tournament next year, in South Africa in 4 years....and in this forum within the next days! I think I have to say...Forza Italia! Best
Etienne Edited: 9 July 2006, 6:06 p.m. ▼
07-10-2006, 04:01 AM
Hello Etienne, Quote: Well, you're a real sportsman! Chapeau!
Quote: Ouch!
Quote: Well, not really... this slogan was robbed by a political party...
Greetings, ▼
07-10-2006, 04:09 AM
Oooops sorry! I forgot this aspect...I thought it just meant "Powerful Italy". Etienne
Edited: 10 July 2006, 6:46 a.m. after one or more responses were posted ▼
07-10-2006, 06:36 AM
Bar Italia in London was festooned with 'Forza Azzuro' banners a couple of weeks ago, and they were giving out free whistles to a crowd outside in what seemed like a contest of volume with the Italian restaurant next door. Thankfully, the noise didn't spoil the taste of the coffee. I can't imagine how loud they would have been on Sunday night, though.
07-09-2006, 07:23 PM
Ciao Massimo, Congratulazioni Tetracampeoni! Qui a casa mia abbiamo tutti fatto il tifo per l'Azzurra. Stasera mangieremo una bella pizza. Ne ho già ordinato una in Pizzeria Baggio. Nessuna intenzione di ricordare USA '94: Baggio è soltanto la mia pizzeria preferita :-) Gerson --------------- Here we have supported Squadra Azzura (sorry Les Bleus!). I've just ordered a Pizza from Baggio Pizzeria (nothing to do with the USA '94 Final: Baggio just happens to be my preferred pizzeria :-) ▼
07-09-2006, 07:29 PM
Well... I must confess I also ate pizza & gelati... Cheers. Etienne ▼
07-09-2006, 08:06 PM
Hello Etienne, It seems you're a good sport! Congratulations to France. Being number 2 is also nice. Congratulations to Germany and Portugal as well (Not always winning is not that bad. Losing without a fight is pretty worse...). Best regards, Gerson. ▼
07-10-2006, 04:06 AM
Hello Gerson, I love Italy! Just walking in the streets of Bologna is a delight for me. It's a pleasure to compete friendly with the people that built such a country. But my favorite Italian is definitely a beautiful lady - and also Hp calculator addict! She even has her own website here. Greetings to Brazil! Etienne
07-04-2006, 05:39 PM
Come one everyone, the problem as stated is over specified. I can halve the number of solved squares and the problem is still tractable :-) ▼
07-05-2006, 12:39 AM
I noticed on the 'About' page: http://xkcd.com/about.html that Randall is working at the same NASA center that I'm currently at. Perhaps I'll say hello. On a side note, most of the fellows I work with still use HPs. Mostly 48GXs'. ECL
07-10-2006, 05:54 PM
Has anyone put up any base-16 Sudoku?
. . . etc. ▼
07-10-2006, 06:59 PM
Um, how do you get a sudoku when you aren't dealing with a square number of digits? Remember that '0' doesn't appear in decimal sudoku. I guess adding 0 for hexadecimal sudoku to get a 4x4 grid would be acceptable. But being picky (and mangling the nomenclature,) wouldn't heptadecimal (or heptadekimal, or septuadecimal) be the right base for a "four-square sudoku?"
Regards, ▼
07-10-2006, 07:15 PM
I think you just need nine symbols for a three-by-three puzzle, and they started with '1' rather than '0'. For a four-by-four puzzle, one could use the sixteen symbols '1'-'G', or (more familiar to some programmers, at least) '0'-'F'. I guess I'm not very picky . . .
Edited: 10 July 2006, 7:33 p.m.
07-10-2006, 08:56 PM
07-11-2006, 04:11 AM
Have a look at this very interesting link (includes further references): Best regards from V. |
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