Surprise 4.2.5 released
Posted: 24 Sep 2005, 14:38Hi,
I have released a new version Surprise-4.2.5 on my homepage.
Here is a list of changes against 4.2.4:
- Fixed a really horrible searcher bug: sometimes the engine played the best move from the previous iteration although the final iteration had already found that another move was better!
- Slightly improved branching factor by fixing a bug in hash collision detection code; many Queen moves from hash table were classified as "not pseudolegal", causing a "false positive" hash collision and therefore many unnecessary researches
- Slightly improved move ordering by considering attacks if the moving piece is a pawn or knight and attacks a higher-value piece with this move
Enjoy it!
Sven
I have released a new version Surprise-4.2.5 on my homepage.
Here is a list of changes against 4.2.4:
- Fixed a really horrible searcher bug: sometimes the engine played the best move from the previous iteration although the final iteration had already found that another move was better!
- Slightly improved branching factor by fixing a bug in hash collision detection code; many Queen moves from hash table were classified as "not pseudolegal", causing a "false positive" hash collision and therefore many unnecessary researches
- Slightly improved move ordering by considering attacks if the moving piece is a pawn or knight and attacks a higher-value piece with this move
Enjoy it!
Sven