Arasan 10.0

[jdart]

Arasan 10.0 is available from http://www.arasanchess.org.

Changes in Arasan 10.0:
1) Fix to pawn scoring: a doubled pawn behind a passed pawn is no longer counted as passed also.
2) Changes to king safety and mobility scoring. Bishop and queen attacks and mobility are now checked in all directions (was formerly
only the "forward" direction).
3) Other scoring changes, including adjustments to piece trade scoring.
4) Multi-core/multi-procesor (SMP) support is now working, using the YBWC algorithm. However the "helpful master" concept is not yet implemented.
5) Now supports 6-man tablebases. Some fixes added to better tolerate
incomplete 6-man tb sets.
6) Checks in q-search are on by default now. Checking moves are generated for 1st two plies of q-search (configurable), but can be
extended in some cases.
7) Forced move extension tweaked - move generator marks move as forced when a singular check evasion that is not a winning capture exists.
8) Some changes also to late move reduction and recapture extension code.
9) Null move verification search was broken - it works now.
10) Another fix for draw scoring - avoid draw when opponent is lower rated
11) Arasan outputs more information to UCI clients during a search.
12) UCI time management fixes.

--Jon