World's Worst Chess Computer vs. World's Worst Chess Computer

Bryce Gallo   ·   May 26, 2021   ·   3 min read

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When most people think of chess artificial intelligence, they think of the world's strongest computers that can defeat the chess world champion with ease. Nowadays, chess computers are so strong that no human could even dream of defeating them. The reason for this is that computers are able to evaluate many more moves in a fraction of a second than a human grandmaster could calculate in an hour. This results in the computers finding the best moves in every position with 100% confidence, leaving the human grandmaster just their best guess as to what the best move might be. 

Today however I decided to pit two of the world's worst chess computers against one another and see what would happen! In today's match, I arranged a duel between Martin (ELO 250) and Fabian (ELO 250) which are two of the three lowest-rated bots on As expected, blunders, mistakes, and bizarre moves were abundant, but the ending really surprised me! Let's take a look at our two participants.

The first bot, playing with the White pieces in today's game is pictured to the left. This is Martin who is approximately rated 250 ELO on This is a common beginning chess rating that is most often found among players who recently learned how the pieces 

move and don't really have a strategy besides, "I'll move this piece and see what happens!". 

The description of Martin on says, "Martin learned chess so that he could play with his young kids. He still beats them most of the time. See how you stack up." Apparently, this bot is from Bulgaria (according to the bot's flag) but I do not know how the country is assigned to the bots. Could it be that the bot's designers are from Bulgaria? Do they add a country to make the bots a bit more 'human'? If you know anything about this, please leave a comment below this post as I'd be very happy to learn more about these bot's creation!

Our second participant is Fabian from Gibraltar and is also rated at approximately 250 ELO on His description says, "Fabian thinks playing chess is just like running a country - how hard can that be?", which is a pretty funny description! The developers seem to have a sense of humor!

Now that we've met our players (bots) we can take a look at the game!

This was definitely a wild game. I was both surprised and a bit disappointed that the bots repeated moves until a draw was called. I really had wanted to see the game go all the way to checkmate so that there would be more to write about.

I'll go into more depth as in analysis in other games since this one was just all over the place. If I have more time later today I'll be sure to annotate this game, otherwise, I'll see you guys in my next post!

Here is the game PGN if you would like to take a closer look at this game with a chess engine.

[Event "vs Computer"]
[Site ""]
[Date "2021.05.26"]
[Round "?"]
[White "RogueAI3160"]
[Black "Fabian"]
[Result "1/2-1/2"]
[TimeControl "-"]

1. e4 h5 2. b3 Nf6 3. e5 Nd5 4. c4 Nb6 5. f3 h4 6. c5 Nd5 7. d4 Rh5 8. Bd3 c6 9.
Qd2 Qc7 10. Bg6 Rh6 11. Qc2 Rxg6 12. a4 e6 13. Kd1 a6 14. h3 Qa5 15. Ba3 Rg3 16.
Qf2 f6 17. Bc1 Qc7 18. a5 Ne7 19. Ra2 b5 20. Nd2 b4 21. exf6 gxf6 22. Bb2 Qf4
23. Qxg3 Qxg3 24. Ne4 Qf4 25. Ba3 Qd6 26. Nxd6+ Kd8 27. Bc1 Nd5 28. Kd2 Bxd6 29.
Ne2 Bxc5 30. dxc5 Kc7 31. Re1 Kd8 32. Rh1 Kc7 33. Re1 Kd8 34. Ra4 Ra7 35. Rg1
Bb7 36. Ba3 Kc7 37. Ke1 Kc8 38. Nd4 Kc7 39. Ne2 Kc8 40. Nd4 Kc7 41. Ne2 1/2-1/2

Posted May 26, 2021 by Bryce Gallo

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