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Apr 2, 2018
Document Elo impact of various parts of search
In order to understand better the impact of various techniques used in
search,
Elo estimates have been run at STC for 60000 games (statistical error
~1.8 Elo),
disabling each feature in turn. This should help future improvements and
simplifications to pick suitable targets.

The list of tests is:
step  7 :
http://tests.stockfishchess.org/tests/view/5abcbb4b0ebc5902926cf1ca
step  8 :
http://tests.stockfishchess.org/tests/view/5abcbb680ebc5902926cf1cc
step  9 :
http://tests.stockfishchess.org/tests/view/5abcbb850ebc5902926cf1ce
step 10 :
http://tests.stockfishchess.org/tests/view/5abcbbeb0ebc5902926cf1d2
step 11 :
http://tests.stockfishchess.org/tests/view/5abcbbbf0ebc5902926cf1d0
step 13 :
http://tests.stockfishchess.org/tests/view/5abd03680ebc5902926cf20b
step 13a:
http://tests.stockfishchess.org/tests/view/5abd29660ebc5902926cf22a
step 13b:
http://tests.stockfishchess.org/tests/view/5abd29820ebc5902926cf22c
step 14 :
http://tests.stockfishchess.org/tests/view/5abd03860ebc5902926cf20f
step 14a:
http://tests.stockfishchess.org/tests/view/5abd2b6c0ebc5902926cf230
step 14b:
http://tests.stockfishchess.org/tests/view/5abd2b8d0ebc5902926cf232
step 14c:
http://tests.stockfishchess.org/tests/view/5abd2bad0ebc5902926cf234
step 14d:
http://tests.stockfishchess.org/tests/view/5abd2bcf0ebc5902926cf236
step 14e:
http://tests.stockfishchess.org/tests/view/5abd2bf10ebc5902926cf238

This patch documents this in the code.

Note that it will be a waste to recompute these estimates often, even a
couple
of [0,5] patches are unlikely to change them by more than the error
bars. The
interest of the Elo annotations in the code is not in the details, but
in high-
lighting trends such as razoring (2 Elo) and singular extensions (60
Elo). These
estimates should be recomputed at most once a year.

Closes #1522

No functional change.
master (#13)
@vondele
@snicolet
vondele authored
Mar 25, 2018
Merge pull request #74 from Kozlov-Sergey-Aleksandrovitch/master
Shashin theory basis added.
Mar 19, 2018
Join common code in the stages of next_move()
Rewrite the MovePicker class using lambda expressions for move
filtering.
Includes code style changes by @mcostalba.

Verified for speed, passed STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 43191 W: 9391 L: 9312 D: 24488
http://tests.stockfishchess.org/tests/view/5a99b9df0ebc590297cc8f04

This rewrite of MovePicker.cpp seems to trigger less random crashes on
Ryzen
machines than the version in previous master (reported by Bojun Guo).

Closes #1454

No functional change.
master
@vondele
@snicolet
vondele authored
Mar 18, 2018
Merge pull request #63 from Kozlov-Sergey-Aleksandrovitch/master
Speed restoring update.
Mar 18, 2018
Merge pull request #62 from Kozlov-Sergey-Aleksandrovitch/master
Junior Options and x86 resolution.
Mar 12, 2018

1.4

SugaR XPrO 1.4
Jan 22, 2018
Merge branch 'master' into SugaR
Fix bench number

Incorrect bench number in master. Fix it.

bench: 4971497
master (#617)
1 parent 1b64591 commit b508f9561cc2302c129efe8d60f201ff03ee72c8
@mcostalba mcostalba committed

official-stockfish/Stockfish@b508f95
Dec 20, 2017
SS_20171216_1
SS_20171216_1

bench: 5386588
master: 5149133
SingleStopper
1 parent fae44dd commit 6d5d4def21e9cbc75eb9e2f596e955c53969e6c0
@Rocky640 Rocky640 committed
Nov 25, 2017
S_XPrO 251117 32-64 Development Versions
Oct 23, 2017
Adapted and Merge to "take 4"
take 4
1 parent a45793c commit 98be9d60481ea9168686f684efa71d6c87696f83
@vondele vondele committed
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