Generates examples of polynomial division using the grid method. Information about the method can be found on various posts linked to this one

Polygrid Page Blog post SourceGenerated puzzles based on knight tours, or kixote, can be found here; generated hidato puzzles, based on kings tours, can be found here. The knightTourist page lets you find your own tour while providing you with some clues for where to move.

Kixote puzzles Hidato puzzles Blog post SourceSome simple examples of solving problems using R.

Play with a set of tiles that together make plaits and knots.

Quiltic Page Blog post Source