Lattice Guides

Everything you need to get good at cross-math: the rules, a solving method that never asks you to guess, and a tour of all twelve Lattice worlds.

• Basics · 6 minHow to solve cross-math puzzles: a beginner's methodA clear, step-by-step method for solving cross-math number puzzles in Lattice — start from what's forced, use each operator as a clue, and never guess.
• Strategy · 5 minWhy every Lattice has exactly one solutionEvery Lattice puzzle is machine-proven to have a single, unique solution before it ships. Here's what that guarantee means and why it changes how the game feels.
• Strategy · 5 minDifficulty in Lattice, explained: Easy to MasterLattice grades puzzles by how deep the deduction goes, not how big the board is. Here's what Easy, Medium, Hard, Expert, and Master really mean.
• Worlds · 6 minThe Weave: Diagonal Cross-Math and Bent Paths in LatticeA guide to The Weave world in Lattice, where cross-math equations run along diagonals and bent paths that cross like woven threads.
• Worlds · 6 minThe Forge and Mystery Ops: Minting Tiles and Deducing Hidden OperatorsHow to solve Lattice's Forge and Mystery Ops worlds: mint the number tiles you need and deduce the hidden operators between cells.
• Worlds · 7 minFrost, Balance, and Signs: Worlds Where Equations Judge ThemselvesA guide to three Lattice worlds where truth melts ice, two sides must match, and inequalities pin numbers down without naming them.
• Worlds · 6 minOrbits and Dials: Cross-Math in the RoundHow Orbits and Dials reshape cross-math into rings and spokes, and how to read a circular board one constrained equation at a time.
• Worlds · 6 minThe Cube and the Pyramid: Lattice's Two 3D WorldsHow Lattice's two three-dimensional worlds work, and how to solve cross-math that wraps a cube or climbs to a pyramid's summit.
• Basics · 6 minLattice vs. Sudoku and KenKen: why proven cross-math goes furtherHow Lattice's cross-math compares to Sudoku and KenKen — and why proven-unique boards, a no-guessing guarantee, and twelve puzzle geometries make it the richer number-logic game.
• Basics · 6 minTeaching arithmetic reasoning with Lattice: a guide for parents and teachersHow Lattice's proven, no-guessing cross-math puzzles can help children practise mental arithmetic and learn to reason — with practical tips for getting started.
• Strategy · 7 minA worked Master solve: cracking a cross-math puzzle step by stepWatch a Master-grade cross-math puzzle fall to pure deduction — no guessing — one forced step at a time, with the board shown at every stage.
• Reference · 4 minLattice glossary: cross-math terms explainedPlain one-line definitions of the cross-math and Lattice terms — cell, tile, tray, operator, chain, forced move, deduction depth, grade, worlds, and more.