Chess Mini is a simple but interesting chess playing app. It uses the world's smallest chess engine - Micro-Max, coded in less than 2000 characters and 133 lines of source code. The entire source code can be printed on a single A4 paper and has less words than a high-school assignment.

Despite its smallest size, Chess Mini has a solid understanding of chess and a very broad opening repertoire. It loves to play irregular openings and you will always be surprised in the first few moves of the game. It is also able to play chess variants such as Fischer-Random and Upside-Down.

The engine has a rating of Elo 2000 on the Computer Chess Rating Lists and is stronger than 70% of the human chess players.

Are you one of the 30%? Can you beat the smallest engine? Download and challenge yourself against the smallest.

What’s New

Version 12.11.1

Better support for iPhone and iPad

Ratings and Reviews

2.9 out of 5
7 Ratings
7 Ratings
Putamus ,

engine might be a little too weak

I have some doubts about the claimed rating as I'm a class C player and can beat this every time unless I flat out drop a piece. I would have expected a bit more of a challenge even from a very streamlined engine like this.

The opponent would be more realistic if its first move didn't always involve moving a rook pawn up four squares.

It doesn't have the rules down 100% either because you can't promote to a knight or anything besides a queen.

gokhan akat ,

instructiv and amusing

Only app out there with lower Elo rating. I don't like to adjust chess engines capabilities (with higher elo ratings) to lower level. It's like forcing a Grand Master play like a novice player. So I think this app is very suitable as Second for the Tournaments B Catagory players. Also the Author replies all questions swift.

PeterGrannt1234 ,


It works just as expected. One minor thing is to improve how the application plays. When it doesn't know what to do it just repeats same moves. Thanks for the update.


Ted Wong
40.5 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© SmallChess
In-App Purchases
  1. Chess Mini - Full Version $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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