Chainlink Puzzle vs Hexudoku

Chainlink is a unique logic puzzle game that challenges your reasoning and pattern recognition skills. Solve over 4200 carefully designed puzzles, from beginner-friendly 4x4 grids to challenging 9x9 boards, plus special bonus levels for experienced players. Every puzzle has exactly one valid solution and can be solved using pure logic. Objective Fill the grid with numbers so that all rules are satisfied: • Each row contains every number exactly once. • Each column contains every number exactly once. • Each chain contains every number exactly once. Some numbers are already given. Use logic to complete the grid. Grid and Numbers • Board sizes range from 4x4 to 9x9. • In an N x N grid, you use the numbers 1 to N. • The position of numbers is not ordered - only the rules matter. Rows and Columns • Every row must contain all numbers from 1 to N. • Every column must contain all numbers from 1 to N. Chains • The grid is divided into chains - groups of connected cells. • Each chain contains exactly N cells. • In each chain, all numbers from 1 to N must appear once. • Chains can have any shape, as long as cells touch by edges. Given Numbers • Some cells are prefilled and cannot be changed. • These numbers serve as clues to help you solve the puzzle. Progress Start with smaller boards like 4x4 to learn the rules and patterns. As you advance, move on to 5x5, 6x6, and larger grids for a greater challenge. Features • 4200+ logic puzzles • Grid sizes from 4x4 to 9x9 • Bonus levels for advanced players • Day and night mode • Cell notes for tracking possibilities • Hints when you are stuck • Undo moves at any time • Highlighting of errors Train your logic, enjoy the chains, and have fun solving every puzzle in Chainlink.

Hexadecimal Sudoku (16×16): Play with digits 0–9 and A–F for a deeper logic challenge. Classic Sudoku (9×9): Switch anytime for a familiar experience. Daily Puzzle: The same daily challenge for everyone. Multiple Difficulties: Easy, Moderate, and Hard. Smart Hints: 5 free daily clues, with extra hints available by watching ads. Notes & Pencil Marks: Keep track of candidates. Undo/Redo: Step backward and forward through your moves. Pause Mode: Hide the grid when you step away. Stats & Personal Bests: Track solves and average time by difficulty. Light/Dark/System Themes: Matches your device preference. Accessible & Clean UI: Fast gameplay with clear highlights.