Sudoku Challenge Answered

Read more in my other blog

Sudoku Challenge

After several years of development, testing, debugging, and improving the strategies, I am ready to proclaim that my Sudoku Analyzer is the best on the web, that it can analyze and give a step-by-step solution to even the toughest Sudoku. Please note that this does NOT entail simply giving a solution, but in providing a step-by-step analytical method to solve. And so I am unveiling the great CyberJerry Sudoku Challenge.

To be sure, I am still discovering some rare Sudokus for which the CyberJerry Sudoku Analyzer cannot give step-by-step analytical hints. But for those Sudokus, neither can anyone else. Or so I claim.

Therein lies the challenge: to provide a step-by-step analytical solution to a Sudoku that has CyberJerry stumped. To meet the Challenge, your Sudoku must qualify thus:

• 1. The Sudoku has exactly one solution.
• 2. CyberJerry's 'Analyze' button reports that the Sudoku cannot be rated, and at some point the 'Hint' button fails to provide a Hint.
• 3. You can describe a step-by-step analytical way to solve the Sudoku. You need only do so at the point(s) where the Sudoku Analyzer fails to provide a Hint. Note that this must be deductive logic, not a trial-and-error guesswork method.

If you think you can meet this challenge, navigate to CyberJerry's Sudoku Analyzer page. Enter the contents of your Sudoku in the grid there, and then click the 'Analyze' button to see that (most likely) CyberJerry can indeed rate the Sudoku in question and give hints for every step. In the (unlikely) event that CyberJerry is stumped (per point #2 above), you may proceed to the Challenge by clicking the hyperlink marked 'Sudoku Challenge'. There you will be able to describe your analytical method per point #3 above.

I promise to publish any successful challenge and publicly acknowledge the challenger's superior Sudoku skills. I reserve the right to likewise publish any failures.

next-blog, take 2

NOTE: As of early September 2017, the original CyberJerry websites are kaput, due to a hosting service 'upgrade'. Therefore, all links herein to cyberjerry.net, cyberjerry.com, and prolifestrike.cyberjerry.net are broken. Many (not all) pages may now be found at cyberjerry.info

Soon after writing the last article, my hosting service bailed out on me, so I lost my website and the new blog there was dead, along with all other pages. Took a bit of scrambling to find a more reliable hosting service and rebuild the more frequented pages on a new server with a new domain name, cyberjerry.info.

So, to repeat that post, I've started a new blog. No, I haven't switched to a Wordpress blog or some other platform. I mean my own blog platform - server database tables, webpage layouts, blog scripts, etc.

The url is cyberjerry.info/amigos and its sister blog in Spanish es.cyberjerry.info/amigos. Give it a look, tell me what you think.

?expref=next-blog

Are you one of those bloggers who likes to jump randomly from blog to blog? You're not? O. . . well, Ok then, never mind.

But now that I've started this blog article, I'd better at least finish my thought. And my thought is that, maybe after a long dry spell without hardly writing anything in my Blogspot blog, perhaps I'd try something completely different. Like writing my own blog.

No, I don't mean switching to a Wordpress blog or some other platform. I mean to build my own blog platform - server database tables, webpage layouts, blog scripts, debugging, re-thinking, re-designing - the whole nine yards.

So, if you do happen to be in the mood for something different, why not jump over to my new blog? There's even a sister blog in Spanish, based upon the same home-grown software. You can give me advice and criticism as I feel my way through the early software development cycle.

Next step will be to decide what to blog about. Maybe you can help with that decision as well.

By the way - can anyone tell me why it's 'nine yards' ?

Leap Second December 31 2016

El vigésimo septimo segundo intercalar se aplicará entre 11:59:59 pm UTC el 31 de diciembre de 2016, y 12:00:00 (medianoche) UTC del 1 de enero 2017. El segundo intercalar se aplica en todo el mundo al mismo tiempo. Así que si usted vive, por ejemplo, en CentroAmerica y tiene un reloj UTC, el reloj debe ir de 17:59:59 a 17:59:60 (el extra segundo) y luego a 18:00:00.

Estoy feliz de informarles de que mi página en linea de Calculadoras de Segundos maneja bien los segundos intercalares, incluido el inminente.

The 27th leap second is scheduled to be applied between 11:59:59 pm UTC on December 31 2016, and 12:00:00 (midnight) UTC of January 1 2017. The leap second is applied worldwide simultaneously. So if you live, for example, in the Central time zone of the U.S. and have a UTC clock, your clock should go from 17:59:59 to 17:59:60 (the extra second) and then to 18:00:00.

I am happy to report that my online Seconds Calculators page handles leap seconds, including the imminent one.

(Of course, all this is assuming the Apocalypse doesn't occur in the meantime.)

Apocalypse?

Cubs Win the World Series. It was always a standing joke amongst die-hard Cub fans that were it ever to actually happen, the end of the world could not be far away. A joke. Seriously, a jest, all in fun.

Or - - perhaps the prophetic post of 2012 was merely 4 years ahead of its time. Vamos a ver.

Leap Second June 30 2015

Esta entrada del blog está dirigido principalmente a los empollones y extraños que se preocupan por tales cosas.

Un segundo intercalar (segundo bisiesto) es un ajuste de un segundo que se aplica de vez en cuando al Tiempo Universal Coordinado (UTC) con el fin de mantener la hora del día cerca del tiempo solar medio. El vigésimo sexto tal segundo intercalar se aplicará entre 11:59:59 pm UTC el 30 de junio de 2015, y 12:00:00 (medianoche) UTC del 1 de julio El segundo intercalar se aplica en todo el mundo al mismo tiempo. Así que si usted vive, por ejemplo, en CentroAmerica y tienen un reloj UTC, el reloj debe ir de 17:59:59 a 17:59:60 (el extra segundo) y luego a 18:00:00.

Estoy feliz de informarles de que mi página en linea de Calculadoras de Segundos maneja bien los segundos intercalares, incluido el inminente.

This article is directed mostly at nerds and weirdos who care about such things.

A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC) in order to keep its time of day close to the mean solar time. The 26th such leap second is scheduled to be applied between 11:59:59 pm UTC on June 30, 2015, and 12:00:00 (midnight) UTC of July 1. The leap second is applied worldwide simultaneously. So if you live, for example, in the Central time zone of the U.S. and have a UTC clock, your clock should go from 18:59:59 to 18:59:60 (the extra second) and then to 19:00:00.

I am happy to report that my online Seconds Calculators page handles leap seconds, including the imminent one.