Skip to content

AI chess coach and opening trainer

Turn positions into plans.

Get clear plans, practical explanations, and focused training built around the positions you struggle with.

See how it works

Start with a prepared White and Black repertoire. Create an account to keep your progress across devices. Compare plans

COACH · FULL GAME REVIEW · 1/6
Play With Theory decoded whole-game review with the selected chess position, coaching explanation, game story, evaluation graph, and move timeline
Game reviewDecode the critical move, then follow its place in the game story and evaluation timeline.

Opening training

Start with a plan, or choose where it begins.

Opening Foundations is already ordered for you. Start it as built, or pick the opening you want to study first.

Browse the public opening guides

Ready-made study plan

Opening Foundations

A complete White and Black repertoire, already arranged into one study plan.

Learn the ideas, practice the critical branches, and review what is becoming weak.

Prefer to choose the first opening?

Select one below. The rest of Opening Foundations stays included.

White repertoire

Italian Game

The Italian Game is one of the oldest classical openings for White. With Bc4, White takes aim at Black's weak f7 pawn. In most variations, White has options to dictate the pace of the game, making the Italian a flexible weapon.

1 chapter · 22 positions

London

The London System is an opening system that has gained enormous popularity in recent years for its simplicity and consistency. The London piece setup is naturally well-suited for a kingside attack, with the light-squared bishop aimed at h7 and both knights ready to hop into action on the kingside.

1 chapter · 28 positions

Queen's Gambit Declined

The Queen's Gambit Declined is one of the most common ways for Black to decline the Queen's Gambit, reinforcing the d-pawn in the process. It includes a wide range of solid, deeply analyzed variations.

1 chapter · 20 positions

Scotch Game

The Scotch Game occurs when White breaks in the center with 3.d4, immediately opening the position. Black can equalize with accurate play, but the Scotch offers practical opportunities for active and tactical play.

1 chapter · 27 positions

Black repertoire

Caro-Kann

The Caro-Kann Defense is one of the most positionally sound replies to 1.e4. Black prepares to contest White's center with ...d5 and builds a solid pawn structure that is difficult to attack.

1 chapter · 28 positions

French Defense

The French Defense is a solid response to 1.e4. Like the Caro-Kann, Black prepares ...d5 to contest White's center, while retaining strong counterattacking chances.

1 chapter · 26 positions

Sicilian Defense

The Sicilian Defense gives Black strong counterattacking chances against 1.e4. It is an intensely theoretical opening with many sub-variations for both White and Black.

1 chapter · 38 positions

King's Indian Defense

The King's Indian Defense is a popular system where Black prioritizes kingside development. Although the setup is flexible, Black must know concrete middlegame ideas to meet White's many possible replies.

1 chapter · 35 positions

Cognitive Report

Find a pattern. Open the positions behind it.

See recurring issues in your analyzed games, recorded Thinking Path decisions, and linked practice. Your connected mentor can review the same evidence before a lesson.

Explore cognitive reports

Coaching Hub

For human chess coaches

See what your players worked on between lessons.

Players train in Play With Theory. With their approval, you can review recent sessions, opening recall, skill change, and current focus before the next lesson.

Ask about the pilot

Limited pilot. Read-only access begins only after student approval and can be revoked at any time.

Learn the plan. Find the move. Review what you miss.

Each lesson starts from a real position. After the explanation, find the move from memory. Positions you miss return for review.

Explore all chess training modes

Position 18

Learn this position, then test it.

See the plan · find the move · review it later
  1. Learn

    Understand the plan

    See why the move works and what the position calls for.

  2. Practice

    Find the move yourself

    Play the critical branch from memory without the engine line.

  3. Review

    Fix what you missed

    Wrong or uncertain answers bring the position back sooner.

  4. Improve

    Spend time where it helps

    Strong positions wait while weak lines move to the front.

Plans

The same complete system. More coach analyses when you need them.

Free includes every training feature, 5 complete Game Decodes, and 40 standalone Position Decodes each week. Pro raises those weekly allowances to 25 and 1,000.

Compare plans

Opening Foundations is ready

Begin with the first lesson.

Your White and Black repertoire is prepared. Train as a guest and save your progress when you are ready.