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Number Pile
Dive into a pile of numbers! Practice mental arithmetic, factorization, and discover hidden mathematical patterns. Perfect for sharpening your number sense and calculation speed.
Mental Math Factorization Patterns
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Number Triplet Game
Find three numbers that add up! This addictive puzzle reinforces mental arithmetic and spatial reasoning. Develop strategic thinking as you figure out how to clear the board efficiently.
Addition Spatial Reasoning Strategy
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Addition Triplet — 2 Player
Two players face off on a 10×10 grid of red and blue numbers. Pick any three numbers where two add up to the third — at least two must be your color, but you can steal one opponent number to block their best move. A live speed timer rewards quick thinking with bonus points. First player to clear all their colored numbers wins!
Addition 2-Player Speed Bonus Strategy
3
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Addition Triplet Puzzle
Find three adjacent numbers on a 10×10 grid — each used exactly once from 1 to 100 — where two of them add up to the third. Remove valid triplets to clear the board. Includes an AI autoplay mode that can even swap tiles when it gets stuck!
Addition Spatial Reasoning AI Autoplay Strategy
4
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Grid of Sums
Place sequential numbers on a grid where each new number must equal the sum of its neighbors! Explore sumsets, partition theory, and adjacency graphs in this mathematically rich puzzle.
Sumsets Sequences Graph Theory
5
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Hexagon Grid of Sums
The classic Grid of Sums reimagined on a hexagonal tessellation! With only 6 neighbors instead of 8, every move requires more careful planning. Can you master the honeycomb?
Hexagons Tessellation Hard Mode
6
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Triangle Grid of Sums
Place sequential numbers on an isosceles triangle tessellation where each number must equal the sum of two neighbors. With 12 neighbors per cell, you'll have plenty of options—but choose wisely! Features auto-expanding grid and AI player.
Triangles Tessellation AI Mode
7 🎨
Square Coloring Game — 4×4
Color a 4×4 grid of 16 squares across 6 progressively harder challenges. Start by coloring less than a quarter, then master exact fractions, no-adjacent-color rules, forbidden 2×2 blocks, and finally 180° rotational symmetry — all while reasoning about fractions and logic!
FractionsLogicGraph Coloring6 Levels
7
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Multiply & Divide Board Game
A strategic two-player game where you place numbered cards on a 10×10 board. Cards must equal the product, exact quotient, or remainder of two adjacent numbers. Master multiplication, division, and modular arithmetic while racing to empty your hand!
Multiplication Division Modulo 2-Player