Universal Crossword Puzzles

Educational • Accessible • Open Source

Experience the next generation of crossword puzzles with our schema-driven system supporting multiple difficulty levels, educational features, and ESL training.

Educational Features

Designed for learning with age-appropriate vocabulary, curriculum standards, and progressive difficulty levels for students K-12.

ESL Training

Specialized puzzles for English language learners with CEFR levels, native language support, and vocabulary focus areas.

Accessibility First

Screen reader support, keyboard navigation, high contrast modes, and mobile-optimized interface for everyone.

Puzzle Collections

Daily Crosswords

Fresh puzzles every day

New crossword puzzles published daily with varying difficulty levels. Track your progress and compete with solving times.

Medium 15×15 Grid Daily

Educational Crosswords

Age-appropriate learning

Curriculum-aligned puzzles for K-12 students with vocabulary building, subject-specific content, and learning objectives.

K-12 Standards Aligned Age Groups

ESL Training

English language learning

Specialized puzzles for non-native English speakers with CEFR levels, native language support, and targeted vocabulary practice.

CEFR Levels A1-C2 Multi-Language

Cryptic Crosswords

Advanced wordplay

Challenging cryptic puzzles with wordplay, anagrams, and clever clues for experienced solvers seeking a brain workout.

Expert Wordplay Advanced

Universal Crossword Schema

Open Standard for Crossword Puzzles

Our system uses the Universal Crossword JSON Schema v1.0, an open standard designed to:

  • Support multiple puzzle types and traditions
  • Enable educational and accessibility features
  • Facilitate import/export from popular formats (PUZ, JPZ, IPUZ)
  • Provide a foundation for future innovation

Technology & Tools

Generators

Python-based puzzle generators with configurable difficulty, vocabulary, and themes.

Responsive Viewer

Mobile-first web viewer with keyboard navigation, hints, and progress tracking.

Import/Export

Convert between PUZ, JPZ, IPUZ, and our Universal JSON format.

Ready to Start Solving?

Choose your challenge and start exercising your brain today