Changes since last released version.
Code: Select all
Version 2
(November 10, 2015)
1. Bug fixes on evaluation and search
2. Improve evaluation, more bonus are given for the side with on-hand pieces
where there are weak squares close to opponent's king. Added piece square
table for king. Added king shelter bonus score
3. Tune some evaluation parameter values
4. Modify Static Exchange Evaluation (SEE) piece values, Silver, promoted Pawn,
promoted Silver, Gold, Bishop and Rook have now same values
5. Don't extend checking moves that have bad SEE, including drop moves
6. Improve move ordering of drop moves, move ordering score is increased for drop moves
that are safe and at the same time able to attack opponent's pieces from drop square
7. Drops moves with low move ordering score are pruned at lower depths
8. Tune LMR conditions for both pv and non-pv nodes
9. Tune null move pruning conditions
10. Improve time handling routines, increase search time when position is bad, also
implement easy move when there is recapture
11. New book format in binary is implemented which also considers win and loss
statistics and number of games played for book play percent calculation
12. Added book learning, when time control is 10 minutes or more and the option
book learning is enabled, positions and moves up to 20 moves will be recorded to the
book after knowing the result for the played game via result command from the Gui.
These new info to the book may affect move selection for the next game
13. Added multiPV feature
14. Added Exclude move feature
15. Added option to change the weight of material evaluation and option to disable null move pruning
16. Modify output format, in multipv mode and/or exclude move mode, effective branching
factor (ebf) and selective depth (sd) are shown after the pv move
17. When playing a game, distance to mate by move, ebf and sd info are shown before the pv lineCode: Select all
# PLAYER : RATING ERROR POINTS PLAYED (%)
1 Shokidoki ICGA 2015++ : 29.3 16.4 433.0 800 54.1%
2 Lima v2-00 64bit popcnt : 0.0 ---- 367.0 800 45.9%
White advantage = -34.52 +/- 9.08
Draw rate (equal opponents) = 50.00 % +/- 0.00https://sites.google.com/site/deuterium ... /shogi-5x5
Notes:
1. In the download file, rename Lima_v2-00_64bit_popcnt.png to Lima_v2-00_64bit_popcnt.exe, same with other files with extension png, for 64bit without popcnt and 32bit exe files.
