Endgame Tablebases Online
6-men endgame analysis free for everyone
 

News

October 25, 2024

11 years after the last update, I thought I should clarify that the project is over and this page is no longer maintained. The project of distributing Nalimov's 6-piece tablebases over the eMule network was successful and has accomplished all its goals. Now both the Nalimov's format and eMule network are no longer widely used. I am keeping this page online purely as a piece of history.

September 27, 2013

Please be sure to verify the downloaded Syzygybases using the following checksums:

These checksums were provided by Joshua Shriver in a single file, I divided them into 4 files for convenience.

Note that md5sum from GnuWin32 Coreutils package computes wrong checksums. You need another build of md5sum, e.g., from Cygwin, or a different checksummer, such as fsum. Simply copy the md5 file into the corresponding Syzygybases directory and run "fsum -c Syzygybases-WDL-3-4-5.md5" (example).

September 14, 2013

Syzygybases is a new promising tablebase format developed by Ronald de Man. The main differences from Nalimov's format:

  • Syzygybases take 50 moves rule into account.
  • Probing code is distributed under permissive license (Nalimov's probing code can only be used under Nalimov's permission, which is hard to impossible to obtain).
  • Syzygybases include WDL (win/draw/loss) tables for fast access during search, as well as separate DTZ (distance to zeroing the 50 move counter) tables for finding the winning line.
  • Syzygybase are about 7 times smaller than Nalimov's tablebases (161 GB vs 1.2 TB).
  • Generating complete syzygybases for up to 6 pieces takes less than a month on a PC with 16 GB or RAM.

The generator source, probing code source and documentation are available on github: https://github.com/syzygy1/tb. As a proof of concept Ronald incorporated the probing code into Stockfish engine: https://github.com/syzygy1/Stockfish.

A few days ago Joshua Shriver started seeding the complete set of 3-4-5-6-piece Syzygybases on bittorrent (as well as hosting the tracker): http://oics.olympuschess.com/tracker/index.php. Already it looks like downloading might be faster than generating, and it will still get faster as more people join.

Still early days, but this could well become the standard tablebase format for the next decade of computer chess.

(Older news are archived here).

Introduction

Many chess enthusiasts would like to do 6-men endgame analysis, but no one wants to host 1 TB of files for download. So we have to help ourselves. This page is an attempt to organize a persistent online availability of the whole set of Nalimov 6-men tablebases. This project depends solely on chess lovers community, it's up to us to choose if we will download any tablebases for free, or if we will have to buy them on DVD from Chessbase etc..

If you are not sure what endgame tablebases are or how to use them, you can learn the basics from Wikipedia or from Aaron Tay's EGTB Guide.

eMule

We use eDonkey and KAD networks, and eMule software for sharing the tablebase files, so if you want to download them you will have to install eMule (or aMule if you use Mac or Linux). If you are new to eMule please take a look at the tutorial, and official help pages. Here you can learn how to set up eMule behind a firewall or router.

Some hints about configuring eMule the best way by our eMule expert Thomas: Thread 1, Thread 2. If you will have any questions or problems, please ask at EGTB forum. Good luck!

Please keep sharing the files after you downloaded them.

3-4-5 men bases

Just in case you don't have them, you should download and install all 3-4-5 men tables before even thinking of using 6-men tables. You can get them from Bob Hyatt, Chesslib Norm Pruitt (also FTP) or Joshua Shriver, but you might as well try using eMule and download them by these links:

6-men endgame tablebases

All files in this section are "emulecollections" - simple text files containing one or several ed2k links. Paste those links into your eMule and it will start trying to download the files.

Smileys show 'spread status' of each tablebase:
old dog sex top  – Super-shared tablebase – All files have 10 full sources (peers with complete files).
old dog sex top  – Well-shared tablebase – At least 3 full sources exist.
old dog sex top  – At least one full source exist - a recently shared base, not spread yet.
old dog sex top  – Tablebase disappeared from the network. It was available for some while, but now the original releaser disconnected before anyone else could get the files. If you have any sets marked with this smiley, please share them online!
old dog sex top  – Tablebase was never released yet.
If you notice that some tablebase is spread more, or less, than stated here, please drop me email and I'll update this page.

The download order is completely up to you. A few things that you may consider:
1. It's good to get small bases before trying the big ones. The best start would be KNNKNN and KBBKBB.
2. It's better to get pawnless bases before getting those with pawns, to avoid the possible "incomplete tablebase problem".
3. You will have better experience if you start with bases which are already shared by many people (old dog sex top and old dog sex top).
4. You may like to download tablebases by "importance" order, which is based on statistics of occurrance of each ending in real games. Several such lists exist: by Dieter Bürßner, Nelson Hernandez, and Peter Kasinski.
5. You may like to first download tablebases for endgames where longer checkmates are possible.

[ Sorted by piece value: P⇒N⇒B⇒R⇒Q  |  Sorted by alphabet: B⇒N⇒P⇒Q⇒R ]





Dog Sex Top — Old

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In the world of romantic fiction, the "meet-cute" often involves a runaway puppy or a high-energy Golden Retriever Tangling its leash around a handsome stranger. However, a new trend is emerging in contemporary romance and literature: the "old dog." Writers are increasingly using senior canines to ground their romantic storylines, adding layers of emotional depth, vulnerability, and a sense of shared history that a younger animal simply cannot provide.

: Stories frequently focus on adopting a senior "soulmate" from a shelter. A common narrative arc involves an elderly person and a senior dog—both "two old souls" carrying loss—finding comfort and healing in one another.

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Old dogs can’t always groom themselves effectively. You may need to step in more often. While the phrase "old dog sex top" sounds

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.

Incorporating old dog relationships into romantic storylines does more than just tug at the heartstrings. It validates the reality of aging and the beauty of the twilight years. It tells the reader that love isn't just about the initial spark; it's about who stays by your side when the pace slows down. Whether in a cozy small-town romance or a sweeping dramatic epic, the senior dog remains one of the most poignant symbols of a love that is built to last. Share public link

What makes these storylines so compelling? It’s the slow burn. It’s the antithesis of instant gratification. An old dog doesn't fall in love; they are dragged into it, kicking and screaming (metaphorically speaking).

Sometimes, an older dog may exhibit an erection or mounting behavior simply due to overexcitement or an adrenaline rush. Simple pleasures like receiving a treat, being petted, or seeing a favorite family member return home can cause a surge of hormones and physiological responses. 3. Urinary Tract Infections (UTIs) or Incontinence Senior Male Reproductive Behaviors Female dogs do not

In romantic fiction, dogs are frequently used as "meet-cute" facilitators. While a rambunctious puppy might cause a chaotic collision in a park, an old dog fosters a different kind of connection—one built on empathy and shared values.

Decades passed, and Henry built a successful career, but he never forgot Emily. He often wondered what could have been if they had stayed together. One day, while browsing through old yearbooks, Henry stumbled upon Emily's name. He couldn't resist the urge to reach out, and to his surprise, she agreed to meet.

The Gray Muzzle Meet-Cute: Why Old Dog Relationships and Romantic Storylines Are Captivating Audiences


© 2005-2013 Kirill Kryukov
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