Chess engines

I have held an engine tournament between Stockfish 8 and Komodo 10.1 (both 32-bit) with Arena GUI.

To my utter surprise, Stockfish proved unbeatable, especially in Queen's Gambit Declined. Komodo won not a single game, and drew only when it played white, or if Stockfish used an opening other than QGD.

I wondered if these scores are normal:

                                             Stockfish 8 (32-bit)     Komodo 10.1 (32-bit)

                      Rapid (40/40)           3.5                                 0.5

                      Blitz (2/6)                 4.5                                  1.5

                     Bullet                        4.5                                  1.5

Is something wrong with my version of Komodo? Or is it the usual result, between the engines?

I'd be glad for your opinions.

Stockfish should do even better at fast time controls, but at 40/40, Stockfish should only be roughly about 20 elo points better.

The bottom line is that 4 games is not enough games to be statistically significant.

If you play many hundreds of games at 40/40 and a large score difference remains, then something is wrong. Make sure that both engines are using the same PC resources (same number of cores/threads, same amount of hashtable size, etc.).

It's hard to beat Stockfish, though I've heard Houdini 5 is better at certain analyses.  In the position below, where I played Kg7, the perfect "maintain the opposition" move that guarantees my Pawn will Queen, both Stockfish 8 64-bit, set to 20-ply, and Houdini 2 thought f6+ was the better move!  Stockfish, using chess.com analysis (8 ply?) thought Kg7 was an "inaccuracy."

But if you play f6+, Black plays Ke8, then f7+ Ke7, and Ke6 (engines' recommended moves) and the Black King would be stalemated if he can't move his pawns so White has to let Black move a Pawn, White captures it to get an Passed Pawn, then has to be careful Black doesn't run out of possible moves.

So Ke7. as I moved, was correct - I checkmated him 5 moves later.

With Stockfish set to multi-PV and 5-piece Syzygy bases: If you let it run long enough, it will say that either of the two moves (f6+ or Kg7) is mate in 14.

Well, it's a close third; Within 10-25 elo of the other two.

Hello to everyone!

I want to know what is the ELO rating for Chess Genius Lite!? Thanks

I don't do mobile apps, so I haven't a clue. However, I noticed that Chess Genius Lite has a restriction where the playing level is restricted to "Instant" or "Easy" after move 20. So I guess it would be much stronger through move 20, and much weaker after move 20.