ChessCoach: A New Chess Engine with its Own Commentary

A new and unique chess motor was unveiled in September named ChessCoach. ChessCoach is a extremely solid motor, at about 3450 Elo and will of class beat even the strongest GMs.

What makes ChessCoach exclusive is that it adds commentary to its possess game titles. This can be a groundbreaking progression for chess improvers all over the place. Envision examining your recreation with a ChessCoach motor and obtaining the motor make clear to you, in English the place you went completely wrong and why.

The ChessCoach motor made use of academic papers from Carnegie Mellon and Peking College to train an AI to make all-natural language processing to analyze video games.

You can problem the motor on Lichess. Its username is PlayChessCoach. As of this producing, ChessCoach is rated approximately 2500 throughout all bullet, blitz and rapid time controls.

Let us try out it

I challenged the motor to a match to see what sort of commentary it presents. I was blessed plenty of to have the white pieces, and ChessCoach has black.

The Opening

We acquired a symmetrical queen’s pawn recreation.

4…h6 is an appealing choice. A little bit premature to give a sq. to retreat the bishop, but the go is just fantastic. Let’s go more than what ChessCoach states immediately after these preliminary moves

  1. d4 Nf6

ChessCoach: “This is a regular reaction to 1.d4. It is the most popular response to 1.d4 (the c pawn is even now protected by the c pawn).”

The motor is right that Nf6 is a normal response to d4, and it is indeed most prevalent. The c pawn remaining shielded by the c-pawn can is debatable.

2. Nf3 d5 3. g3 Bf5
“Black wants to establish his bishop on the lengthy diagonal, but the knight on f3 is not so bad as it appears.”

This is a incredibly strange remark. Black is not doing something to create their bishop to the prolonged diagonal. White is, nonetheless, with Bg2 to occur. The knight of f3 does not look undesirable- at the very least to my human eyes.

4. Bg2 h6 (Would have been good to see some commentary here since it is an offbeat opening alternative)

5. O-O e6
“The plan is to enjoy …c6 and trade the darkish-squared bishops, which will give White the possibility to participate in d4 at some issue.”

🤔 This is comprehensive nonsense. c6 is a fine shift (and it does get performed upcoming), but has absolutely nothing to do with exchanging dark squared bishops. And white currently has a pawn on d4. Let us continue on on.

7. c4 c6 8. Nc3 Be7
“The bishop is perfectly positioned on e7 and the knight on f6 is pretty effectively put.”

Pretty wonderful! Agreed!


I feel we can simply call this the middle game. We’re presently in exceptional-ish opening territory and the future moves are not common idea. We are now at the pursuing posture. I enjoy Qb3 listed here to stress the b7 pawn.

8. Qb3 Qb6 9. c5 Qxb3
“I was astonished to see black exchange. But, it is not a great strategy to exchange when powering.”

I kind of agree that black should not essentially exchange below. We’re in a standard posture exactly where both side capturing the queen will give the other aspect a half open up a-file to operate with. I also agree that it isn’t a great idea to “exchange when behind” but black isn’t “behind” below, in any perception of the phrase.

10. axb3 a6 11. b4

11… O-O 12. b5
A typical concept in this sort of positions. White is striving to get rid of the weak point of the b5-pawn, but Black is undertaking wonderful.”

This is my favorite comment so far! It’s extremely near. b4 is unquestionably a pretty typical concept in these sorts of positions. You will also see these varieties of positions occur out of the London Technique. See how NM Matt Jensen handled it in a video clip on our YouTube channel. My only nitpick is that white is not making an attempt to get rid of the weak point of the b5 pawn, but somewhat white is hoping to create a weakness in black’s camp. Black is still undertaking good, as black is an motor and performs properly.

12…cxd5 13. Nxb5 (exploiting the a-file pin) Nc6 14. Nc3 (retreating the knight due to the fact the a8 rook is now defended) Nd7
“The most sensible continuation, as now White has to come to a decision irrespective of whether to perform d2-d3 or e2-e4.”

This is once more nonsense garbage. d2-d3 is not a feasible move and e2-e4, whilst legal, just blunders a pawn.

15. Rd1 b6 16. cxb6
“[cxb6] is a usual trade sacrifice in this structure.”

This is not an trade sacrifice.

16… Nxf6 17. b3 (trying to keep the knight out of c4) Rfc1
“The b3-pawn is not hanging, so White’s parts are uncoordinated.”

The b3 pawn is not defended, but absolutely nothing is attacking it, thus it isn’t hanging, pretty great! I also are unable to argue that white’s items aren’t coordinated, but I have noticed worse coordination!

18. Bb2 Bc2 19. Rb1 (mouse slipping the rook to b1 as a substitute of c1) Bxb1
“White’s knight is however pinned, but the pawn is now pinned. Black’s knight is attacking the bishop on b2.”

This is hilarious. None of this is genuine at all. Swing and a skip.

The match went on a a couple a lot more moves, but I’ll depart it right here.


The new ChessCoach motor is extremely robust. It experienced a winning place in opposition to me in just 18 moves, after I felt I did absolutely nothing also silly. The commentary did have extremely fantastic chess lingo, employing phrases like “exchange sacrifice” “typical idea in this structure” and chatting about “hanging pieces” as nicely as and other tactical motifs. The language does sense very all-natural and not computer-like at all.

The precise commentary, on the other hand, did not maintain substantially chess real truth. It would be groundbreaking if this engine could evolve to give insights into errors and blunders around the study course of a game. Chess players just about everywhere would enjoy to review a recreation with this motor to get thoughts and pinpoint their mistakes. It seems like we have a ways to go prior to that is attainable.

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