Wordle

About Wordle

This tool is a browser-based implementation of the popular word-guessing game, a logic puzzle that challenges players to find a secret five-letter word within six attempts. It is a single-player game of deductive reasoning^[6], sharing core principles with classic code-breaking games like Mastermind^[18]. After each guess, the player receives color-coded feedback for each letter, indicating whether it is correct and in the right position, correct but in the wrong position, or not in the word at all. This feedback loop is central to the game's design, allowing players to iteratively refine their hypotheses and converge on the correct solution.

The core game mechanics^[8] rely on a simple but effective feedback system, a key element of its user interface design^[23]. A green tile indicates a direct match of both letter and position. A yellow tile signifies that the letter exists in the target word but is currently in the wrong position, representing a correct element in an incorrect permutation. A gray or dark tile means the letter is not present in the word. The player's task is to synthesize these clues across multiple guesses to solve what is fundamentally a constraint satisfaction problem^[4], eliminating candidate words from the dictionary that violate the known constraints.

From a computational perspective, the game is a constrained search problem^[21] over a finite lexicon^[16]. The optimal strategy for solving the puzzle is an application of information theory^[11]. The best initial guess is the one that, on average, provides the most information, as measured by entropy^[7]. Such a guess is expected to prune the largest portion of the solution space, regardless of the feedback received. This process can be modeled as traversing a decision tree^[5] where each node is a guess and each branch represents the feedback, with the goal of reaching a leaf node (the solution) in the fewest steps.

The modern digital version of this game was created by developer Josh Wardle^[15], who released it to the public in October 2021, leading to its rapid and widespread popularity. However, the concept has historical precedents. It is conceptually similar to the 1955 pen-and-paper game Jotto^[14] and bears a strong resemblance to the format of the television game show Lingo^[17], which has been on air in various forms since 1987. This clone honors that lineage by providing a classic, accessible implementation of the core puzzle.

This application is built entirely with client-side web technologies, primarily HTML^[9] for structure, CSS^[3] for styling, and JavaScript^[13] for game logic. The word list, a critical asset, is typically stored as a JSON^[12] array or a simple text file fetched by the client upon loading. Player statistics and game state, such as the current guess grid and streak, are persisted between sessions using the browser's Web Storage^[24] API. This architecture requires no backend server for gameplay, making the tool robust, highly scalable, and completely private, as no user data is transmitted over the network.

How to Use

1. 1. Type a valid five-letter English word using your keyboard or the on-screen keys.
2. 2. Submit the word by pressing the 'Enter' key.
3. 3. Analyze the color-coded feedback for each letter tile.
4. 4. Green indicates the correct letter in the correct position.
5. 5. Yellow indicates a correct letter in the wrong position; Gray indicates the letter is not in the word.
6. 6. Use these clues to make your next guess, repeating the process until you solve the word or run out of six attempts.

Frequently Asked Questions

About Matt George

I'm Matt George, a software engineer in the startup space. I run my own shop building software for early-stage founders, and I love making free tools and experiences that people actually use. Enjoy using Wordle!

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