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Alain SAVARD
020dd69a35
Simplify the other check penalty computation. Compared to current master, a) it uses a 143 kingDanger penalty instead of S(10, 10) for the "otherCheck" (credits to ElbertoOne for finding a suitable kingDanger range to replace the score and to Guardian for showing this could also be a neutral change at LTC). This makes our king safety model more consistent and simpler. b) it might also score more than one "otherCheck" penalty for a given piece type instead of just one c) it might score many pinned penalties instead of just one. d) It also remove 3 conditionals and uses simpler expressions. So it was tested as a SPRT[-3, 1] Passed STC http://tests.stockfishchess.org/tests/view/5a2b560b0ebc590ccbb8ba6b LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 11705 W: 2217 L: 2080 D: 7408 And LTC http://tests.stockfishchess.org/tests/view/5a2bfd0d0ebc590ccbb8bab0 LLR: 2.94 (-2.94,2.94) [-3.00,1.00] Total: 26812 W: 3575 L: 3463 D: 19774 Trying to improve on b) another attempt was made to score also the "otherchecks" for piece types which had some safe checks, but this failed STC http://tests.stockfishchess.org/tests/view/5a2c79e60ebc590ccbb8badd bench: 5149133