Latest abok build December 16 th

Subject: Latest abok build December 16 th Mon Dec 17, 2018 2:33 pm

Author: Alain SAVARD
Date: Sun Dec 16 09:57:43 2018 +0100
Timestamp: 1544950663

Refactor king ring calculation

Compute the "double protection by pawns" expression only once
in initialize(), instead of once for each piece in the piece loop.

Passed STC
http://tests.stockfishchess.org/tests/view/5c1506380ebc5902ba11f3b4
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 9494 W: 2191 L: 2045 D: 5258 Elo +5.34

Inspired by Nick Pelling's test
http://tests.stockfishchess.org/tests/view/5c144d110ebc5902ba11e4af
and an older test of mine
http://tests.stockfishchess.org/tests/view/5c0402810ebc5902bcee1fc8

Non functional change.

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Victor Hugo