How Coachess teaches you chess.

A Coachess lesson is not a video. It is a position you navigate, step by step, with Boris next to you explaining why each move matters. You play the right move, you see the opponent's best reply, you understand the idea and the one after it.

Every line Boris teaches has been checked against Stockfish at depth 30. When a lesson shows a trap, you walk into it yourself so you feel the refutation, because reading 'do not play this' teaches nothing but playing it and watching it fall apart teaches forever. Arrows are color coded on purpose: orange is what we are doing, red is what the opponent is threatening against us. The colors are part of the language.

Every puzzle you see on Coachess has been solved and failed by hundreds of thousands of players before you, from open community databases. Their wins and losses are what set each puzzle's difficulty. It is a real number, not a guess we made.

Your rating moves with the same math that grades world champions, so the number in your profile is not a vanity score invented for this app. We match puzzles to your rating so you are always solving something you can actually solve, with just enough teeth to learn something. There is no timer, because a rushed solve is not a good solve.

Your brain is built to forget. The lines you studied last week are mostly gone by Friday unless you meet them again.

Coachess shows you the same position at exactly the moment your memory is starting to slip, so the meeting reinforces the line instead of re-teaching it from scratch. A card you see today might come back tomorrow, then in three days, then in a week, then a month. The gap is the point.

Most chess apps play the brilliant move for you and ask you to admire it. Watching the answer teaches you almost nothing.

Coachess flips the board and makes you find the move yourself. Finding it once, even if you struggled, beats watching it ten times. That struggle is what moves the line from a thing you read into a thing you know.

When you play a real game, the lessons are sitting there in the moves you actually made. Not in a curated puzzle from a database. In the moment you played Bf4 instead of Nf3, in the move you spent six minutes on and still got wrong. That is your homework.

Coachess loads your games from Chess.com or Lichess, runs them through Stockfish, and finds the inflection points where the position turned against you. Then Boris walks you through them. Not a list of engine numbers. A coach naming what you missed, asking you to find the move that was actually there, accepting any move close enough to the engine's pick.

If every card is easy, your brain coasts and learns nothing. If every card is impossible, you give up and learn nothing.

We calibrate the sessions so you are always pushing a little past comfortable. The middle cards of every session are the hardest on purpose. The answer has to be earned for the answer to stick.

Every drill session is three acts. The first few cards warm you up with patterns you already know. The middle is real work, at the edge of your ability. The last card is a win you can carry with you.

This is why a ten-minute drill on Coachess feels like ten minutes of chess, not like checking off ten tasks. You are in the middle of something, and then you finish. The arc is what makes the rhythm.

Other apps pay you in points and badges to keep you coming back. It works, until it doesn't. The day the points stop feeling good is the day you stop caring about chess too, because chess became the vehicle for the points.

Coachess has a streak counter because flow deserves to be recognized, and the Board Vision drill has a weekly leaderboard so you can see how your square recall stacks up. Those are real numbers about a real skill, scoreboards rather than tokens. What we refuse: coins, gems, experience bars, Bronze-Silver-Gold tiers, daily league promotions, fake achievements. The reward for playing chess on Coachess is playing better chess. If that is not enough for you, the fault is ours and we should fix it, but not by hiding it behind tokens.

Every line Boris teaches has been checked against Stockfish at depth 30 before it ever reaches you. If the engine disagrees, the lesson is rewritten or it does not ship.

Every instructive-game lesson replays a real historical game. Capablanca versus Marshall, New York 1918. Kasparov versus Topalov, Wijk aan Zee 1999. Ding versus Nepomniachtchi, 2023. The white player, the black player, the year, the event, the result. If Boris cannot cite the source, the lesson does not exist.