Normally this requires computing all the positions with more kings also, a process that took me nearly a full year using 4 computers for English checkers. Play and analyse 14 variations of draughts most popular in the world English, Italian, Russian, Brazilian, Czech, American Pool, Spanish, Thai, Turkish, International, Killer, Frisian, Spantsireti and Canadian with any time control Large opening books and learning databases Endgame databases up to pieces for 64 games, and 8 pieces for International Modern "anti-human" playing style Self-teaching option Interactive and automatic game analysis Powerful database tools. Depth-to-win databases for English and Italian checkers have been built and are available for download, along with updated versions of Kingsrow and CheckerBoard that support the new databases, and K positions were added to the English opening book. The Kingsrow program is unchanged, but the opening book has been increased to , positions. The MTC data is useful for solving very difficult positions that require a large number of moves before a conversion move occurs. The MTC db has data for 2 through 10 pieces. When kings are present it is possible that the winning side might keep making moves that maintain its winning status without making progress towards finishing the game.
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Kingsrow will work with either version of the databases, but the older version files take up a lot of space on your hard drive, and there is italliana reason to keep them if you have the new databases. Why "Aurora Borealis Draughts professional" is the best choice?
However it turns out that only a small percentage of the positions cannot be resolved, so this was a nice way to make the Italian KingsRow more powerful with only a small additional computing effort. However, you may also use for play and analysis purposes free external draughts engines version 2.
Both Kingsrow and CheckerBoard are free programs and can be downloaded using the links below. You can kingzrow pdn files of lots of matches there and view them with CheckerBoard. You can download install files for the piece endgame databases using the links below.
This allows it to compress much better. When I first built an opening book for Italian checkers using an 8-piece db, I discovered that 9 of the opening ballots are probably forced losses for the weak side.
For example, the files for 2 through 9 pieces used to be 45gb; in the new format they are 18gb. Both versions have improvements in playing positions that are database draws.
Using the new larger databases I have found 2 more ballots that are probably lost. A new version of Kingsrow which plays 10x10 international draughts won a tournament in the Netherlands against 9 European programs.
A full piece endgame database for Italian checkers is now available for download, along with new versions of Italian Kingsrow 1.

It is used with Martin Fierz's user interface program called CheckerBoard. Details and opening book file download here. To install, unzip the archive into your CheckerBoard directory and choose "saltare.
Program's appearance
Even if Kingsrow can find a way to win, these databases allow Kingsrow to play the minimum path to wins directly, or indirectly via conversions.
For downloading these large files, Mega only supports Chrome and Opera web browsers, or use the Mega PC App, which is probably the least effort. Cake wins the long CheckerBoard engine match! Bob Newell's Checker Maven webzine has an article about it: The DTW db is nice in that it gives the absolute shortest path to a win.
The 8x8 versions work with CheckerBoard as the user interface. KingsRow is a very strong engine for CheckerBoard. These are and Cake Sans Souci 1. Kingsrow Italian is a program that plays Italian checkers.
The book was built by doing systematic searches with Kingsrow and the piece database. At the current rate of progress it will be completed this summer, and it will occupy GB of disk space.
About Aurora Borealis draughts and checkers database program
The match games can be downloaded here. To use the 9 and piece databases, you also need to install the databases of 2 through 8 pieces. If you have installed the latest CheckerBoard package above with Cake Manchester, and if you have generated the 6-piece database on your computeryou can download and extract this zipfile into the 'db' directory in your CheckerBoard folder.
You will be able to generate the 6-piece endgame database on your computer. Kingsrow now has a parallel search engine, which can give up to a 3x speedup with multi-core CPUs.
The new version of CheckerBoard fixes several bugs and allows access to the 8 search threads and larger hashtable settings. After you install the new databases, you should tell kingsrow where you put them.
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