Chess engine: Stockfish 20032021

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Stockfish - UCI chess engine, compiled by Vizvezdenec

 Timestamp: 1584734857
Adjust singular extension search depth

 This patch applies a different singular extension search logic in case the position is ttPv && !PvNode.
It changes the depth of this search, higher for this types of nodes, and lower for other nodes.

 passed STC
http://tests.stockfishchess.org/tests/view/5e72bbaae42a5c3b3ca2e75e
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 12692 W: 2608 L: 2389 D: 7695 Elo +6.00
Ptnml(0-2): 238, 1414, 2839, 1601, 254

 passed LTC
http://tests.stockfishchess.org/tests/view/5e731c07e42a5c3b3ca2e770
LLR: 2.96 (-2.94,2.94) {0.25,1.75}
Total: 145716 W: 19218 L: 18626 D: 107872 Elo +1.41
Ptnml(0-2): 1100, 13605, 42899, 14111, 1143

Bench: 5398277

Stockfish 20032021 download

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