Leonid Liberman

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Leonid Liberman,

a Canadian chess programmer and author of LL Chess [1], famous for posting turbulent mate in N positions in CCC, forcing many engines to “ explode” even in quiescence search. In his publications on computer chess from the mid 90s, hosted by End of the World Production, LLC. [2], he elaborates on x86 assembly, board representation, piece coding and move generation, mate solving, and point values [3].

1999

nodes per ply by Leonid, CCC, June 10, 1999
hardware of Cray Blitz by Leonid, CCC, June 13, 1999 » Cray Blitz
Do you know something about INTEL 64 bits CPU? by Leonid, CCC, June 15, 1999
How really strong is ChessMaster 6000? by Leonid, CCC, July 03, 1999 » Chessmaster
Brute force base of good game. True or not true? by Leonid, CCC, September 07, 1999 » Brute-Force
What is the History table? by Leonid, CCC, September 15, 1999 » History Heuristic
Please, say in few words what can reduce the “branching factor” by Leonid, CCC, September 19, 1999 » Branching Factor
number of moves in position by Leonid, CCC, September 19, 1999

Re: number of moves in position by Leonid, CCC, September 21, 1999

Do have the Crafty the Assembler written core? by Leonid, CCC, November 01, 1999 » Crafty
Do you use illigal moves in the ply zero and 1? by Leonid, CCC, November 22, 1999
What will be the position of Windows in 3, 4 years in the future? by Leonid, CCC, November 29, 1999 » Windows
What chess projects we have in the States? by Leonid, CCC, December 04, 1999
How many plies in chess game before hash table have some sense? by Leonid, CCC, December 08, 1999

2000

What is the q-search? by Leonid, CCC, January 07, 2000 » Quiescence Search
What is the use of extensions? by Leonid, CCC, January 09, 2000 » Extensions
Mate in …? by Leonid, CCC, February 12, 2000
Branching factor, make me confuse more that ever by Leonid, CCC, April 01, 2000
What is the average nodes per second for minimax? by Leonid, CCC, June 15, 2000 » Nodes per second
Is the NPS for minimax devided by NPS in alpha-beta = 5 ? by Leonid, CCC, June 16, 2000
Is the NPS tend to grow at the end of the game? by Leonid, CCC, July 22, 2000
How make Fritz execute brute force search? by Leonid, CCC, July 26, 2000 » Fritz
Junior chess program. Just version of Fritz 5? by Leonid, CCC, July 29, 2000 » Junior
How do your program search of all plys? Identical way? by Leonid, CCC, August 03, 2000
Attempt to understand Leonids nomenclature… by Andrew Dados, CCC, August 04, 2000
Two mate positions to solve by Leonid, CCC, September 02, 2000
Two mate position to solve by Leonid, CCC, September 06, 2000

2001

January

What shortest mate that you can find for this position? by Leonid, CCC, January 17, 2001
If you like to find a mate… by Leonid, CCC, January 18, 2001
If you want solve one mate… by Leonid, CCC, January 21, 2001
One easy mate to solve… by Leonid, CCC, January 22, 2001
One average mate position… by Leonid, CCC, January 23, 2001
If you like to solve easy forced mate… by Leonid, CCC, January 24, 2001
If you like to solve average mate position… by Leonid, CCC, January 25, 2001
If you like to solve real mate… by Leonid, CCC, January 27, 2001
If you like to solve mate from real game… by Leonid, CCC, January 28, 2001
If you like forced mate… by Leonid, CCC, January 30, 2001
Forced mate position to solve… by Leonid, CCC, January 31, 2001

February

If you like to solve a mate… by Leonid, CCC, February 01, 2001
Forced mate so solve… by Leonid, CCC, February 05, 2001
If you like to solve easy mate… by Leonid, CCC, February 08, 2001
If you like to solve a mate… by Leonid, CCC, February 09, 2001
If you like to crush easy mate… by Leonid, CCC, February 10, 2001
If you like to solve mate for light position… by Leonid, CCC, February 11, 2001
If you like to solve mate… by Leonid, CCC, February 14, 2001
If you like solving forced mate… by Leonid, CCC, February 15, 2001
If you like to solve one easy mate… by Leonid, CCC, February 16, 2001

March

Easy mate to solve… by Leonid, CCC, March 04, 2001
If you like to sove a mate… by Leonid, CCC, March 10, 2001

April

If you are ready to solve one mate… by Leonid, CCC, April 11, 2001
If you like easy mate… by Leonid, CCC, April 12, 2001
If you want to solve one mate… by Leonid, CCC, April 14, 2001
If you enjoy like me solving mates… by Leonid, CCC, April 16, 2001
Mate that every program will solve… by Leonid, CCC, April 17, 2001
One mate to solve… by Leonid, CCC, April 22, 2001
Mate to solve… by Leonid, CCC, April 23, 2001
Mate that every program will find by Leonid, CCC, April 26, 2001
Mate to solve for champions… by Leonid, CCC, April 29, 2001

May

One mate to solve for fittest programs by Leonid, CCC, May 04, 2001
Very easy mate to solve by Leonid, CCC, May 05, 2001
One mate to solve… by Leonid, CCC, May 06, 2001
Mate to solve in two flavous by Leonid, CCC, May 07, 2001
One mate to solve… by Leonid, CCC, May 08, 2001
One mate to solve… by Leonid, CCC, May 15, 2001
One very easy mate to solve by Leonid, CCC, May 21, 2001
One mate to solve… by Leonid, CCC, May 30, 2001

June

One mate to solve… by Leonid, CCC, June 02, 2001
Mate to solve for good program by Leonid, CCC, June 07, 2001
One mate to solve for Champion! by Leonid, CCC, June 16, 2001

July …

One mate to solve by Leonid, CCC, July 17, 2001
One mate to sove for Champions! by Leonid, CCC, September 02, 2001
One mate to solve for Champions! by Leonid, CCC, October 02, 2001
A mate for Leonid by Sven Reichard, CCC, October 10, 2001
Try this mate by Leonid, CCC, October 16, 2001
Try solve this mate by Leonid, CCC, October 21, 2001
Try this moderate mate by Leonid, CCC, October 27, 2001
One easy mate by Leonid, CCC, November 04, 2001
Very easy mate to solve by Leonid, CCC, December 22, 2001

2002

Where is now 64 bits Intel’s computer? by Leonid, CCC, May 11, 2002
Find a mate by Leonid, CCC, August 03, 2002
One mate in 10 to solve by Leonid, CCC, August 10, 2002
One mate in 11 by Leonid, CCC, September 07, 2002
Try to solve mate by Leonid, CCC, September 14, 2002
What is the future for Linux? by Leonid, CCC, October 03, 2002 » Linux
What new chip will come in the next year? by Leonid, CCC, November 06, 2002

2003

Where are 64 bits machine? by Leonid, CCC, March 17, 2003
Mate slightly harder by Leonid, CCC, August 25, 2003
Mate that should be easy by Leonid, CCC, October 19, 2003
Heavy mate position but easy to solve by Leonid, CCC, October 20, 2003
Mate to torture by Leonid, CCC, November 02, 2003
Try very easy mate by Leonid, CCC, November 04, 2003
Try to solve very populated mate by Leonid, CCC, November 05, 2003
Very easy mate by Leonid, CCC, November 06, 2003

2005 …

Seeking for Leonid mates by Matthias Gemuh, CCC, May 09, 2005
Leonid’s Megapage by AGove, CCC, July 20, 2007

2010 …

Leonid Chess Megapage by kirchner, Immortal Chess Forum, August 10, 2012
Remember Leonid Liberman (author of LLCHESS)? by Dann Corbit, CCC, May 23, 2015

External Links

LL Chess Game - End of the World Production, LLC.
Inevitable Mate Positions by Leonid Liberman
Chess Introduction by Leonid Liberman
Procedure for finding the Check by Leonid Liberman
New Ideas by Leonid Liberman

References

↑ LL Chess Game - End of the World Production, LLC.
↑ About Us - End of the World Production, LLC.
↑ Chess Introduction by Leonid Liberman

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