Latest abrok Development Version November 26th (SF The gift that keeps on giving )

Author: Vizvezdenec
Date: Tue Nov 26 01:28:05 2019 +0100
Timestamp: 1574728085

Simplify king danger

This patch is a cleanup/simplification of king flank defenders patch,
removing king flanks attacks linear dependance in kingdanger. Result
of experiments with quadratic kingflank defenders scaling. Rebased on
the latest master.

passed STC
http://tests.stockfishchess.org/tests/view/5ddc2b99e0b4af579302bacf
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 19660 W: 4309 L: 4184 D: 11167 Elo +2.21

passed LTC
http://tests.stockfishchess.org/tests/view/5ddc3168e0b4af579302bade
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 24362 W: 3974 L: 3859 D: 16529 Elo +1.64

Closes https://github.com/official-stockfish/Stockfish/pull/2428

bench 5742013

Author: Moez Jellouli
Date: Tue Nov 26 00:01:49 2019 +0100
Timestamp: 1574722909

Extend last non-pawn captures

Extend last non-pawn captures at principal variation nodes because
they are in general decisive moves with clear endgame result.

STC
http://tests.stockfishchess.org/tests/view/5ddafc86e75c0005326d2140
LLR: 2.96 (-2.94,2.94) [-1.50,4.50]
Total: 9892 W: 2238 L: 2099 D: 5555 Elo +4.88

LTC
http://tests.stockfishchess.org/tests/view/5ddb0401e75c0005326d2150
LLR: 2.95 (-2.94,2.94) [0.00,3.50]
Total: 30369 W: 5013 L: 4756 D: 20600 Elo +2.94

Closes https://github.com/official-stockfish/Stockfish/pull/2425

Bench: 5059526

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