Interactives

Puzzles

Challenge your problem-solving skills with educational puzzles designed to reinforce key concepts across multiple disciplines.

Knights Exchange Puzzle

A classic chess puzzle where you must exchange the positions of white and black knights using legal knight moves.

chess knights puzzle

The Plate Swap Puzzle

Arrange plates around a circular table so each person has their own plate. A challenging permutation puzzle!

logic permutation strategy

Chessboard Repaint Puzzle

Repaint rows, columns, or 2x2 squares to achieve exactly one black square. A puzzle about parity and operations!

logic parity strategy

N-Queens Puzzle

Place as many queens as possible on an nxn chessboard so that no two queens attack each other.

logic chess placement

Parliament of Sikinia Puzzle

Separate parliament members into two houses so each has at most one enemy in their house. A graph theory puzzle!

graph-theory logic coloring

Bulgarian Solitaire

A mathematical card game where you repeatedly redistribute cards into piles until reaching a stable configuration.

solitaire card-game mathematics

Pebble Placement Game

Place pebbles on a grid following specific rules. A strategic puzzle about spatial reasoning!

strategy grid placement

Stacking Blocks Optimization

Split stacks of blocks to maximize your score! An optimization puzzle about strategic decision-making.

optimization strategy mathematical

Domino Retiling Puzzle

Rearrange dominoes on a grid to achieve the target configuration. A puzzle about combinatorics and tiling!

combinatorics tiling puzzle

Ascending-Descending Grid Puzzle

Fill a grid with numbers that are ascending in rows and descending in columns. A constraint satisfaction puzzle!

logic grid constraint

The Ladybug Clock Puzzle

A ladybug walks randomly on a clock face. Discover the surprising probability that any given number is painted last!

probability random-walk simulation

The Erdos Discrepancy Problem

Can you write instructions to survive the tunnel forever? Explore this famous mathematical puzzle through the Prisoner's Walk game.

erdos discrepancy sequences