Do not reduce or extend at the root

[brunocodutra]

Gauntlet

cutechess-cli -tournament gauntlet -games 2 -rounds 1500 -openings file=engines/openings-6ply-1000.pgn plies=6 policy=round -concurrency 8 -ratinginterval 10 -resultformat wide -recover -engine conf=dev stderr=stderr.log -engine conf=Carp-3.0.1 -engine conf=Winter-4.0 -engine conf=Frozenight-6.0 -each tc=3+0.025 option.Hash=32 option.Threads=1

Rank Name                          Elo     +/-   Games    Wins  Losses   Draws   Points   Score    Draw 
   0 dev                            -3       5    9000    2536    2603    3861   4466.5   49.6%   42.9% 
   1 Carp-3.0.1                     17      10    3000     973     823    1204   1575.0   52.5%   40.1% 
   2 Winter-4.0                      7       9    3000     856     793    1351   1531.5   51.0%   45.0% 
   3 Frozenight-6.0                -17       9    3000     774     920    1306   1427.0   47.6%   43.5%

STS1-STS15_LAN_v6.epd

python sts_rating.py -f "./epd/STS1-STS15_LAN_v6.epd" -e dev -t 8 -h 256 --movetime 100 --maxpoint 100

STS Rating v14.2
Engine: chessboard
Hash: 256, Threads: 8, time/pos: 0.100s

Number of positions in ./epd/STS1-STS15_LAN_v6.epd: 1188
Max score = 1188 x 100 = 118800
Test duration: 00h:02m:29s
Expected time to finish: 00h:02m:34s

  STS ID   STS1   STS2   STS3   STS4   STS5   STS6   STS7   STS8   STS9  STS10  STS11  STS12  STS13  STS14  STS15    ALL
  NumPos     85     80     86     89     85     80     82     80     71     79     70     74     75     79     73   1188
 BestCnt     72     60     66     72     68     56     55     56     44     67     53     51     59     61     47    887
   Score   7971   6925   7842   8419   7934   7564   7294   7007   5931   7491   6414   6401   6855   7144   6483 107675
Score(%)   93.8   86.6   91.2   94.6   93.3   94.5   89.0   87.6   83.5   94.8   91.6   86.5   91.4   90.4   88.8   90.6

:: STS ID and Titles ::
STS 01: Undermining
STS 02: Open Files and Diagonals
STS 03: Knight Outposts
STS 04: Square Vacancy
STS 05: Bishop vs Knight
STS 06: Re-Capturing
STS 07: Offer of Simplification
STS 08: Advancement of f/g/h Pawns
STS 09: Advancement of a/b/c Pawns
STS 10: Simplification
STS 11: Activity of the King
STS 12: Center Control
STS 13: Pawn Play in the Center
STS 14: Queens and Rooks to the 7th rank
STS 15: Avoid Pointless Exchange

:: Top 5 STS with high result ::
1. STS 10, 94.8%, "Simplification"
2. STS 04, 94.6%, "Square Vacancy"
3. STS 06, 94.5%, "Re-Capturing"
4. STS 01, 93.8%, "Undermining"
5. STS 05, 93.3%, "Bishop vs Knight"

:: Top 5 STS with low result ::
1. STS 09, 83.5%, "Advancement of a/b/c Pawns"
2. STS 12, 86.5%, "Center Control"
3. STS 02, 86.6%, "Open Files and Diagonals"
4. STS 08, 87.6%, "Advancement of f/g/h Pawns"
5. STS 15, 88.8%, "Avoid Pointless Exchange"

[codecov]

Codecov Report

Attention: Patch coverage is 95.83333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.05%. Comparing base (299af59) to head (65c78f5).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/search/engine.rs	94.28%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #651      +/-   ##
==========================================
- Coverage   97.30%   97.05%   -0.25%     
==========================================
  Files          46       46              
  Lines        3150     3121      -29     
==========================================
- Hits         3065     3029      -36     
- Misses         85       92       +7     

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