AI Scrabble Practice

Five AI-powered practice tools backed by a 370K-word dictionary

Demo Video

The Problem

Scrabble practice tools are either too simple (word checkers) or too powerful (board solvers) — neither builds actual skill. Players bounce between fragmented sites for validation, anagram solving, and word discovery with no structured practice mode.

The Solution

A unified five-tool practice suite that consolidates word validation, anagram solving, strategic word finding, AI-powered natural language search, and timed gameplay into a single bilingual app with sub-second response times.

Key Features

370,105-word dictionary with O(1) Set-based validation — sub-millisecond lookups even on mobile
Magic Search translates plain English queries into validated words with scores via GPT-4o-mini
Timed Practice Game with realistic tile draws, 60-second rounds, progressive scoring, and AI hints
Anagram Solver processes 7-tile hands with wildcard support in under 500ms
Full EN/ES bilingual interface with locale-based routing and Playwright E2E test coverage

Results

370,105-word dictionary with sub-millisecond validation

Anagram solving in under 500ms for 7-tile hands

5 practice tools in a single unified interface

Overview

The AI Scrabble Practice Suite is a full-featured web application that consolidates five practice tools into a single, fast interface. Players validate words against a 370,000+ entry dictionary, discover high-scoring plays, solve anagrams, search with natural language, and practice under time pressure — all running client-side with sub-second response times.

Version 2.0 introduced two AI-powered features. Magic Search translates plain English queries ("7-letter words ending in -ING with a Z") into validated word results with Scrabble scores. The Practice Game runs timed 5-minute sessions with realistic tile draws and on-demand AI hints, simulating the pressure of competitive play without a board.

The app ships with bilingual support (English/Spanish), dark mode, responsive layouts, and a Playwright E2E test suite covering all major features.

The Challenge

No learning curve in existing tools: Word checkers confirm validity but don't help players discover new words or understand scoring patterns. Board solvers play the game for you.
Fragmented workflow: Players bounce between separate sites for validation, anagram solving, and word lookup — losing context and momentum.
No structured practice: No tool simulates timed play with realistic tile draws, progressive difficulty, and intelligent feedback.
Language barriers: Most Scrabble tools are English-only with no internationalization support.

The Solution

Unified tool suite: Five tools share a single 370K-word dictionary and consistent UX — Word Validator, Word Finder, Anagram Solver, Magic Search, and Practice Game. Players stay in one application throughout their practice session.

AI-powered discovery: Magic Search uses GPT-4o-mini to interpret natural language queries and return validated words with scores. Server-side API proxies keep credentials off the client while maintaining fast response times.

Timed practice with coaching: The Practice Game generates realistic tile draws (vowel/consonant balance), runs 60-second rounds, and offers AI-powered hints on demand. Scoring rewards longer words with progressive bonuses, encouraging players to push beyond safe short words.

Bilingual interface: A type-safe i18n system with React Context provides full English and Spanish support with locale-based routing, making the tool accessible to a broader player base.

Technical Highlights

O(1) word validation: 370K words loaded into a Set for instant dictionary lookups, even on mobile
Custom anagram algorithm: Letter frequency counting with wildcard support processes the full dictionary in under 500ms
Server-side API proxies: Vite dev middleware routes /api/definition, /api/magic-search, and /api/practice-hint through server-side endpoints, protecting API keys
Type-safe i18n: React Context with typed template variables and locale-based routing (/ and /es/ prefixes)
MSW integration: Mock Service Worker enables development and testing without live API dependencies
Full E2E coverage: Playwright tests cover all pages, dark mode, responsive layouts, and Spanish locale routing

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