I am looking for a really-bad-by-design chess engine, compatible with Arena chess GUI. Not just lowering engine power.. I have tried lowering Stockfish's power, and it didn't suit my needs, so I am looking for a weak one!

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    Why? So you can beat it on occasion, or for some other purpose?
    – Tony Ennis
    Commented Oct 17, 2016 at 2:01
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    I am actually going to be using it to develop my own chess engine... I will have mine play it several thousand times, and it will learn common tactical mistakes and patterns. Commented Oct 17, 2016 at 2:03

2 Answers 2


You have a whole list at http://www.computerchess.org.uk/ccrl/4040/

If you're looking for a weak engine, I'd suggest:

  1. Predateur 2.2 64-bit
  2. MicroMax
  3. CupCake
  4. BikJump

I know those four engines work and run smoothly, although they're quite weak (which is exactly what you want!). Any Elo 2000 rated human player can trash them easily.

__ My Recommendation __

If your engine can't even beat the lowest Stockfish level, maybe it'd be a better idea to focus on your engine, such as adding easy technqiues like null-move pruning. As an average human player, I can consistently beat the lowest Stockfish level, it plays around 1500-1600 level. Even the engines I mentioned might be too strong for you.


I found it! UFIM works well for my purpose!


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