If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
Policy / Politique
The fee for tournament organizers advertising on ChessTalk is $20/event or $100/yearly unlimited for the year.
Les frais d'inscription des organisateurs de tournoi sur ChessTalk sont de 20 $/événement ou de 100 $/année illimitée.
You can etransfer to Henry Lam at chesstalkforum at gmail dot com
Transfér à Henry Lam à chesstalkforum@gmail.com
Dark Knight / Le Chevalier Noir
General Guidelines
---- Nous avons besoin d'un traduction français!
Some Basics
1. Under Board "Frequently Asked Questions" (FAQs) there are 3 sections dealing with General Forum Usage, User Profile Features, and Reading and Posting Messages. These deal with everything from Avatars to Your Notifications. Most general technical questions are covered there. Here is a link to the FAQs. https://forum.chesstalk.com/help
2. Consider using the SEARCH button if you are looking for information. You may find your question has already been answered in a previous thread.
3. If you've looked for an answer to a question, and not found one, then you should consider asking your question in a new thread. For example, there have already been questions and discussion regarding: how to do chess diagrams (FENs); crosstables that line up properly; and the numerous little “glitches” that every new site will have.
4. Read pinned or sticky threads, like this one, if they look important. This applies especially to newcomers.
5. Read the thread you're posting in before you post. There are a variety of ways to look at a thread. These are covered under “Display Modes”.
6. Thread titles: please provide some details in your thread title. This is useful for a number of reasons. It helps ChessTalk members to quickly skim the threads. It prevents duplication of threads. And so on.
7. Unnecessary thread proliferation (e.g., deliberately creating a new thread that duplicates existing discussion) is discouraged. Look to see if a thread on your topic may have already been started and, if so, consider adding your contribution to the pre-existing thread. However, starting new threads to explore side-issues that are not relevant to the original subject is strongly encouraged. A single thread on the Canadian Open, with hundreds of posts on multiple sub-topics, is no better than a dozen threads on the Open covering only a few topics. Use your good judgment when starting a new thread.
8. If and/or when sub-forums are created, please make sure to create threads in the proper place.
Debate
9. Give an opinion and back it up with a reason. Throwaway comments such as "Game X pwnz because my friend and I think so!" could be considered pointless at best, and inflammatory at worst.
10. Try to give your own opinions, not simply those copied and pasted from reviews or opinions of your friends.
Unacceptable behavior and warnings
11. In registering here at ChessTalk please note that the same or similar rules apply here as applied at the previous Boardhost message board. In particular, the following content is not permitted to appear in any messages:
* Racism
* Hatred
* Harassment
* Adult content
* Obscene material
* Nudity or pornography
* Material that infringes intellectual property or other proprietary rights of any party
* Material the posting of which is tortious or violates a contractual or fiduciary obligation you or we owe to another party
* Piracy, hacking, viruses, worms, or warez
* Spam
* Any illegal content
* unapproved Commercial banner advertisements or revenue-generating links
* Any link to or any images from a site containing any material outlined in these restrictions
* Any material deemed offensive or inappropriate by the Board staff
12. Users are welcome to challenge other points of view and opinions, but should do so respectfully. Personal attacks on others will not be tolerated. Posts and threads with unacceptable content can be closed or deleted altogether. Furthermore, a range of sanctions are possible - from a simple warning to a temporary or even a permanent banning from ChessTalk.
Helping to Moderate
13. 'Report' links (an exclamation mark inside a triangle) can be found in many places throughout the board. These links allow users to alert the board staff to anything which is offensive, objectionable or illegal. Please consider using this feature if the need arises.
Advice for free
14. You should exercise the same caution with Private Messages as you would with any public posting.
Quelqu'un peut m'expliquer la solution? Je n'y arrive pas.
N. Plaksin, Shakhmatisti Rossii, 1991. Add one black piece so that Black cannot win.
C'est un problème d'analyse rétrograde. Si on ajoute une dame noire en d1, les Noirs ne peuvent plus gagner car la position devient illégale, le roi blanc n'ayant pu se trouver sur aucune case au coup précédent. Si on n'ajoute pas cette dame, le roi blanc pouvait se trouver en d2 ou f3 au coup précédent (en d2: 1...Dc2+ 2.Re3; en f3: 1...Df1+ 2.Re3). Si on ajoute la dame en d1, toutes les cases où le roi blanc pouvait se trouver au coup précédent (d2, d3, e2, f2, f3) sont contrôlées au moins deux fois, ce qui rend la position illégale.
Je n'y comprend rien. Même avec une Dame noire en d1, le Roi blanc aurait pû se trouver en f3. C'est possible avec un Pion noir à e2 et une pièce blanche à f1. Ainsi après 1...e2 x f1=D+. 2. Rf3-e3 les Noirs gagnent.
Je n'y comprend rien. Même avec une Dame noire en d1, le Roi blanc aurait pû se trouver en f3. C'est possible avec un Pion noir à e2 et une pièce blanche à f1. Ainsi après 1...e2 x f1=D+. 2. Rf3-e3 les Noirs gagnent.
Il semble finalement que ma solution n'était pas la bonne. Il faut plutôt ajouter un cavalier noir en f3. Ce ne peut être aux Noirs à jouer, puisque la position deviendrait illégale (impossible pour le roi blanc d'être en e3). C'est donc aux Blancs à jouer après 1.Rf4-e3 Rd5-e5, mais alors c'est pat, ce qui démontre que les Noirs ne peuvent pas gagner.
Last edited by Louis Morin; Friday, 29th March, 2019, 11:16 AM.
Avec une Cavalier noir en f3, le Roi blanc aurait pû se trouver en f2. C'est possible avec un Pion noir à e2 et une pièce blanche à f1. Ainsi après 1...e2 x f1=D+. 2. Rf2-e3 les Noirs gagnent.
Je crois avoir trouvé. En plaçant une Dame noire en g2.
Tweet
Comment