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Andrew Crowell: The Master of the TIC

He did not design forty puzzles one at a time. He wrote a program that generates them, and the real work is deciding which ones are worth making.

Andrew Crowell: The Master of the TIC

He did not design forty puzzles one at a time. He wrote a program that generates them, and the real work is deciding which ones are worth making.

Interlocking Cube Puzzles: How Turning Interloc...

Most puzzle types are a category. Turning interlocking cubes are closer to one person's body of work, and there are more than forty of them.

Interlocking Cube Puzzles: How Turning Interloc...

Most puzzle types are a category. Turning interlocking cubes are closer to one person's body of work, and there are more than forty of them.

Sherzod Khaydarbekov: Chess Puzzles Without a C...

Every other designer here makes puzzles out of geometry. Khaydarbekov makes them out of rules, and his puzzles have no mechanism at all.

Sherzod Khaydarbekov: Chess Puzzles Without a C...

Every other designer here makes puzzles out of geometry. Khaydarbekov makes them out of rules, and his puzzles have no mechanism at all.

Burr Puzzles: What They Are, Where They Came Fr...

Six sticks, five go in, the sixth will not. A guide to what counts as a burr, where it came from, and which one to pick up first.

Burr Puzzles: What They Are, Where They Came Fr...

Six sticks, five go in, the sixth will not. A guide to what counts as a burr, where it came from, and which one to pick up first.

Fish Tank flat tray packing puzzle

Pocket Puzzles: What to Take on a Plane

Small and light is the easy part. The question that decides whether a puzzle works on a plane is what happens when you drop a piece, and on a tray...

Pocket Puzzles: What to Take on a Plane

Small and light is the easy part. The question that decides whether a puzzle works on a plane is what happens when you drop a piece, and on a tray...

MINIMA Slider, our IPP 2026 exchange puzzle

Collectible Puzzles: What IPP Exchange Actually...

Exchange puzzle, world debut, IPP37 award. These phrases turn up on collectible puzzle pages and mostly go unexplained. Here is what each one actually requires, and whether it should change...

Collectible Puzzles: What IPP Exchange Actually...

Exchange puzzle, world debut, IPP37 award. These phrases turn up on collectible puzzle pages and mostly go unexplained. Here is what each one actually requires, and whether it should change...