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Protonspring had a successful functional simplification that removes the PassedFile array using a simple linear equation. Merge the additive term S(5, 10) of protonspring passed file simplification (pull request #2250) into the PassedRank array. This harmless change has a different bench because the candidate passer evaluation will always get less compared to #2250, as we apply bonus = bonus /2. Tested as a non-regression against #2250 Passed STC http://tests.stockfishchess.org/tests/view/5d33427e0ebc5925cf0e6fa2 LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 81459 W: 18174 L: 18171 D: 45114 Passed LTC http://tests.stockfishchess.org/tests/view/5d335c8d0ebc5925cf0e731e LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 18525 W: 3176 L: 3052 D: 12297 Closes #2250 Closes #2251 Bench: 3859856
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