🔍 History: History_BestScoreBetaMargin 80 -> 60

[eduherminio]

8+0.08

Test  | search/History_BestScoreBetaMargin-60
Elo   | 0.75 +- 1.00 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=32MB
LLR   | -2.26 (-2.25, 2.89) [0.00, 3.00]
Games | 219950: +63364 -62889 =93697
Penta | [6398, 26390, 44089, 26535, 6563]
https://openbench.lynx-chess.com/test/860/

40+0.4

Test  | search/History_BestScoreBetaMargin-60
Elo   | -0.81 +- 2.59 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=128MB
LLR   | -0.25 (-2.25, 2.89) [-3.00, 1.00]
Games | 27592: +7111 -7175 =13306
Penta | [535, 3412, 5958, 3364, 527]
https://openbench.lynx-chess.com/test/870/