Singular quiet LMR

[MJZ1977]

If ttMove is a capture and had a singular extension, it is probably the best move. No need to make a decrease of LMR on other moves.

STC
LLR: 2.96 (-2.94,2.94) {-0.50,1.50}
Total: 41968 W: 8170 L: 7918 D: 25880
Ptnml(0-2): 733, 4770, 9726, 5022, 733
https://tests.stockfishchess.org/tests/view/5ed6b666f29b40b0fc95a884

LTC
LLR: 2.95 (-2.94,2.94) {0.25,1.75}
Total: 71376 W: 9200 L: 8827 D: 53349
Ptnml(0-2): 486, 6544, 21342, 6743, 573
https://tests.stockfishchess.org/tests/view/5ed7578bf29b40b0fc95a8c9

Bench: 4733799

[vondele]

@MJZ1977 no more tests needed IMO.

[MJZ1977]

OK, I wait the merge to test some variations :-)

[vondele]

Thanks!

So go ahead and test variations :-)