Покрытие доски 10×10

Докажите, что шахматную доску 10×10 нельзя покрыть фигурками следующего вида:

Покрытие шахматной доски 10x10

Ответ: Каждая фигурка указанного вида покрывает три клетки одного цвета и одну клетку другого (три клетки чёрного цвета и одну белого, либо наоборот). Поскольку всего на шахматной доске чёрных и белых клеток поровну, то количество фигурок, содержащих три белые клетки и одну чёрную, должно совпадать с количеством фигурок, содержащих три чёрные клетки и одну белую. Следовательно, общее количество фигурок должно быть чётным. Однако это невозможно, так как общее количество фигурок - 25.

Ваша оценка: Нет Средняя: 3.3 (1322 оценки)


Комментарии

Hello just wanted to give you a brief heads up and let you know a few of the images
aren't loading properly. I'm not sure why but I think its a linking issue.

I've tried it in two different browsers and both show the same results. https://jobssw.22ndcm.com/employers/827081-ross87699

I do not know if it's just me or if everyone else experiencing issues with your website.





It appears as if some of the written text on your


content are running off the screen. Can someone else please provide feedback and


let me know if this is happening to them too?


This may be a problem with my browser because I've had


this happen before. Cheers





Here is my homepage - สูตรบาคาร่าได้เงินจริง 2021

Hello would you mind sharing which blog platform you're working with?


I'm looking to start my own blog in the near future but I'm having a hard


time selecting between BlogEngine/Wordpress/B2evolution and Drupal.


The reason I ask is because your layout seems different then most blogs


and I'm looking for something completely unique.


P.S My apologies for being off-topic but I had to ask!











Feel free to surf to my webpage; เว็บพนันสล็อต

I’m not that much of a internet reader to be honest but your


blogs really nice, keep it up! I'll go ahead and bookmark your website to come back down the road.


Cheers





my site :: เซ็กซี่บาคาร่า

Can I simply just say what a relief to uncover somebody that truly understands what they're


discussing on the internet. You certainly understand how to bring an issue to light and make it


important. More and more people must look at this and


understand this side of the story. I was surprised that you're not


more popular given that you definitely have the


gift.





Here is my blog post ... https://xn--42c6bac8bnke7av4argz1a7nwgub.live/

Fastidious answers in return of this query with genuine arguments


and telling all regarding that.





Here is my webpage ... __________________

What's up mates, how is all, and what you wish for to say regarding this post, in my


view its really remarkable in support of me.





Take a look at my site - __________________

Heya i'm for the primary time here. I found this board and I find


It truly useful & it helped me out a lot. I'm hoping to offer one thing again and help others like you helped me.








Also visit my homepage; https://xn--42c6au3bb9azd9a.live/%e0%b8%99%e0%b9%89%e0%b8%ad%e0%b8%87%e0%b8%9e%e0%b8%a3%e0%b8%b4%e0%b8%81-%e0%b8%88%e0%b8%b1%e0%b8%94%e0%b8%aa%e0%b8%a7%e0%b8%b4%e0%b8%87-%e0%b8%ab%e0%b8%8d%e0%b8%b4%e0%b8%872-%e0%b8%8a%e0%b8%b2/

I was suggested this website via my cousin. I'm not positive whether this submit is written via


him as no one else understand such targeted about my difficulty.


You are wonderful! Thank you!





Also visit my site ... __________________

Do you have any video of that? I'd want to find out


some additional information.





Check out my blog post: _________

Hmm it looks like your website ate my first comment (it was extremely long) so I guess I'll just


sum it up what I submitted and say, I'm thoroughly enjoying your blog.


I too am an aspiring blog writer but I'm still new to everything.


Do you have any tips for inexperienced blog writers?


I'd genuinely appreciate it.





Here is my blog post; __________________

I do not know if it's just me or if perhaps everyone


else encountering issues with your website. It looks like some of


the written text in your content are running off the screen. Can someone else


please provide feedback and let me know if this is happening to them as well?


This may be a problem with my web browser because I've had


this happen before. Appreciate it





My site :: เว็บพนันสล็อต

Hi there! Do you use Twitter? I'd like to follow you if that would be ok.


I'm undoubtedly enjoying your blog and look forward to new updates.











Also visit my blog post เว็บพนันสล็อต

I'm excited to find this web site. I want to to thank


you for your time for this particularly fantastic read!! I definitely loved every


part of it and I have you book marked to check out new stuff on your site.








My webpage ... https://Xn--42C6Bac8Bnke7Av4Argz1A7Nwgub.live

Good post. I learn something totally new and challenging on sites I stumbleupon on a daily basis.


It will always be useful to read content from other


authors and practice a little something from other web sites.








Review my blog post; หนัง netflix แนะนํา 2021

I am curious to find out what blog system you're using?


I'm experiencing some small security issues with my latest site and I would like to find something more secure.


Do you have any recommendations?





my web site - หนัง netflix พากย์ไทย

You actually make it seem really easy with your presentation however


I to find this matter to be really something which I


think I might never understand. It kind of feels too


complicated and very wide for me. I am having


a look ahead to your next put up, I will try to get the dangle of it!











Check out my homepage บ้านผลบอล

I don't know if it's just me or if perhaps everybody else encountering problems with your website.


It looks like some of the text in your posts are running


off the screen. Can somebody else please comment and let me know if this is happening to them as well?


This may be a problem with my web browser because I've had this happen previously.


Thank you





Also visit my homepage :: หนัง netflix ฟรี

Hurrah, that's what I was searching for, what a stuff!


existing here at this website, thanks admin of this web site.








Feel free to visit my web page :: Buy Terfina online

Hi there, i read your blog from time to time and i own a similar one and i was just curious if


you get a lot of spam comments? If so how do you protect against it,


any plugin or anything you can advise? I get so much lately it's driving me crazy so any support is very much appreciated.








My web site: เว็บคาสิโน แจกเครดิตฟรี

I got this website from my friend who shared with me concerning


this web site and at the moment this time I am visiting this site and reading very informative articles at this place.











Here is my web-site - netflix หนัง

It is not my first time to pay a visit this website, i am visiting this web site
dailly and take pleasant information from here daily. https://1top.company/en/

Hi! I could have sworn I've been to this site before but after browsing through a few of the posts I realized it's new to me.


Anyways, I'm definitely delighted I stumbled upon it and I'll be book-marking it and checking back often!





Here is my web-site; วิเคราะห์บอลวันนี้

I'm very happy to uncover this website. I need to to thank


you for ones time for this wonderful read!!


I definitely really liked every little bit of it and I have you book-marked to look at new information on your site.








Here is my web blog ... หนัง netflix น่าดู

Hello, I think your site might be having browser compatibility


issues. When I look at your blog in Opera, it looks fine but when opening in Internet Explorer, it has


some overlapping. I just wanted to give you a quick heads up!


Other then that, terrific blog!





My page; หนัง netflix แนะนํา

whoah this weblog is wonderful i like reading


your posts. Keep up the good work! You understand, many people


are looking round for this information, you can help them greatly.








Here is my webpage :: https://xn--42C6bac8bnke7av4argz1a7nwgub.live

When I initially commented I clicked the "Notify me when new comments are added" checkbox and now each time a comment is added I get several emails with the same comment.
Is there any way you can remove me from that service?
Bless you! https://seomasterpress.com/make-money-from-internet/

Hey I know this is off topic but I was wondering if you knew of


any widgets I could add to my blog that automatically


tweet my newest twitter updates. I've been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like


this. Please let me know if you run into anything. I truly enjoy reading your blog and


I look forward to your new updates.





Here is my webpage - __________________

After I initially left a comment I appear to have clicked on the -Notify me
when new comments are added- checkbox and now whenever a comment is added I receive four emails with the same comment.
Is there a means you are able to remove me from that service?
Kudos! https://1top.company/en/category/real-estate/

Страницы