Chessle

Chessle is a daily logic puzzle that turns chess openings into a Wordle-style guessing game. Each day there is one hidden sequence of opening moves played by both sides, and you rebuild it by entering complete openings of your own. After every guess the moves light up green, yellow, or gray to show what was exactly right, what was right but misplaced, and what never belonged.

What is Chessle?

Chessle is a daily browser puzzle that swaps Wordle's five-letter words for a hidden chess opening. Each day there is one secret sequence of opening moves, with both white's and black's moves counting, and your job is to rebuild that exact sequence from scratch. Instead of typing letters, you type whole openings, and the game scores every move you played against the moves in the hidden line.

What sets Chessle apart from the wider field of Wordle clones is that the alphabet is chess theory itself. A guess is not a single token but a complete opening you enter move by move, so each attempt is really a small chess decision rather than a vocabulary hunt. The clue system rewards players who know how openings transpose: a move can be correct yet sit on the wrong turn, or even belong to the other color than the one you assigned it to, which makes move order and side-awareness part of the puzzle in a way letter games never touch.

Chessle was made by Jack Li, who goes by jackli_gg and posts on Chess.com as GMJackL, and it runs at jackli.gg. It offers two difficulty settings: Normal mode hides three moves per side, and Expert mode hides five moves per side, so the harder setting asks you to recover a deeper, longer line. You get six guesses in either mode, and a fresh puzzle is generated at 12am PST every day, giving everyone the same opening to chase within the same window.

Feedback follows the familiar three-color logic but applied to moves. Green marks a move that is exactly right in exactly that spot, yellow marks a move that does appear in the hidden line but not on that turn, and gray marks a move that never shows up at all. When you finish, Chessle produces a spoiler-free shareable grid of colored squares that records how many guesses you needed, so you can compare your solve count with friends without giving the opening away. The puzzle leans analytical: casual players can rely on mainstream lines, while opening theory fans treat it as a quick daily test of how well they really know move orders.

How to play Chessle

1. Choose your difficulty: Normal mode hides three moves per side, while Expert mode hides five moves per side and runs longer.
2. Enter a full opening as your guess, supplying the moves for both white and black rather than a single move.
3. Submit the guess and read the colors: green is a move that is correct in that exact spot.
4. Treat yellow as a move that does belong in the hidden line but at a different turn, possibly even for the other side.
5. Ignore gray moves for that square, since gray means the move never appears in the secret opening at all.
6. Refine your next opening using those clues and keep going until you reconstruct the line, all within six total guesses.

Tips and strategy

• Lead with a popular mainline like a 1.e4 e5 or Queen's Gambit setup so several moves get colored immediately and you learn a lot from the first guess.
• Track yellow moves carefully: a correct-but-misplaced move often pins down the opening's move order once you shift it to the right turn.
• Remember a yellow move can belong to the opposite color, so try assigning a stubborn yellow to the other side before discarding it.
• In Expert mode, spend an early guess on a broad, well-known system to map the deeper moves rather than committing to one sharp line too soon.
• Use gray results to eliminate whole families of openings, narrowing toward the structure the hidden line actually uses.
• Think in transpositions: if greens suggest a pawn structure, test a different opening that reaches the same position to fix the exact order.

Good to know

Resets

Daily at 12am PST

Guesses

6 attempts

Modes

Normal (3 moves per side) and Expert (5 moves per side)

Cost

Free to play in a browser

Creator

Jack Li (jackli_gg)

Platform

Web browser, at jackli.gg

Chessle FAQ

Is Chessle free?

Chessle is a browser game hosted at jackli.gg, and the daily puzzle plays in a browser with no paywall shown on the page.

How many guesses do you get in Chessle?

You get six guesses per day. Each guess is a full opening sequence covering moves for both white and black, not a single move.

When does Chessle reset?

A new Chessle puzzle is generated at 12am PST every day, so the same hidden opening is available to all players within that daily window.

What do the colors mean in Chessle?

Green means a move is correct in that exact spot, yellow means the move appears in the hidden line but on a different turn and possibly for the other side, and gray means the move is not in the opening at all.

Is Chessle related to Wordle?

It borrows Wordle's six-guess, three-color feedback format but applies it to a hidden chess opening instead of a word, so you reconstruct a sequence of moves rather than letters.