Hey all, recently got the shredder chess app on my iPhone, it was a bit pricey, but it seems pretty good. One thing it supposedly can do is measure your rating as you play, and adjust to create a similar strength opponent. It also tries to work out your Elo rating as you go.
Now if you have a quick glance over at my profile you can see I'm nowhere near as good as Shredder chess seems to think I am, but for some reason I beat it on a higher setting... I've put a couple of examples down here, for higher rated peeps to take a glance at. I'm sure I've made errors in these games (I always do!) but this means that shredder chess made larger ones? I basically want to know if I just got lucky a few times or if this chess engine is really predicting my rating too high...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thanks for your time

Nah you can't be 1700 playing like that, maybe I should buy it... i'd be 2300 :D

Thats what I reckoned, I mean even on the opening it played a bit oddly. 
Heh, must be a feel-good chess programme :D

Just got it myself - pretty impressive, isn't it?

Just looked at first game.  It played horribly.  No where near a 1672 rating.  

I think the ELO is a bit optimistic.  I'm at like a 1350 on it and I'd be lucky to be playing like an 1150 right now...

Who cares what number it says though?  It's not as glitchy as glaurung.  It's a fun sparring partner and excellent for chess on the go.

I've got a bunch of chess engines.  Maybe the chess.com engine is stronger?

I've found that the Hiarcs app is a much tougher (more accurate?) judge of your rating than is Shredder.  tChess Pro just added the ability to evaluate and track a user rating as well, but I haven't used it enough to compare.

Interesting, I have the same program on my EDGE iPhone and it plays very strongly. I have mine set on the "aggressive" setting, makes things more interesting IMO.

I emailed the game development team sometime back. The rating system uses a n-400\800 variable. Meaning if you play it at elo2600 and you play poorly you will get an elo 1800-2200 rating depending on your version. It keeps adjusting shredders strength down until you beat it, giving you a much more accurate rating. Puppaz wrote: Hey all, recently got the shredder chess app on my iPhone, it was a bit pricey, but it seems pretty good. One thing it supposedly can do is measure your rating as you play, and adjust to create a similar strength opponent. It also tries to work out your Elo rating as you go.Now if you have a quick glance over at my profile you can see I'm nowhere near as good as Shredder chess seems to think I am, but for some reason I beat it on a higher setting... I've put a couple of examples down here, for higher rated peeps to take a glance at. I'm sure I've made errors in these games (I always do!) but this means that shredder chess made larger ones? I basically want to know if I just got lucky a few times or if this chess engine is really predicting my rating too high...                               Thanks for your time

Two and a half years later, the question remains: What's with Shredder?

I had tried the Lite version and dismissed it as crippleware. It is rated 1650 and I beat it easily every time. No surprise there; on a good day, I'm rated around 2000.

However, today I played the paid version for iPhone at the highest rating of 2600 and beat it on the first game. Does Shredder actually start lower and adjust? I played well but really did not feel like I was playing against 2600.

Here is the pgn:

White: TND

Black: Shredder (2600)

Event: Shredder for iPhone / iPod touch: 9:53 AM

Date:  2011-08-18

(A22  English, Bremen, Smyslov System)

 

1c4 e5 

2Nc3 Bb4 

3g3 Nf6 

4Bg2 O-O 

5e4 d6 

6Nge2 a6 

7O-O Nc6 

8d3 Bc5 

9h3 h6 

10Kh1 Be6 

11f4 Bd7 

12f5 Nd4 

13Nxd4 Bxd4 

14Ne2 c5 

15g4 b5 

16g5 hxg5 

17Bxg5 Bxb2 

18Rb1 Bd4 

19Ng3 Rb8 

20Kh2 Re8 

21Nh5 Bc6 

22Nxf6+ gxf6 

23Bh6 Kh7 

24Qh5 Rb7 

25Rf3 Bxe4 

26Rg3 Bf3 

27Bxf3 Bg1+