I have just finished testing a small modification to Crafty's LMR algorithm. When everyone started this, conventional wisdom said that certain moves should not be reduced, in particular captures. I've changed this particular idea just a bit. Since I always use SEE (or a faster equivalent when ...

If you play A vs A (same program) then a ponder hit rate of 85% would be pretty common. program A1 searches to depth D to choose its move, and therefore the ponder move is based on a search of depth D-1. When program A2 searches it will go one ply deeper, and change its mind 15% of the time ...