Larger set (sold in toy stores) runs from 0-0 to 9-9 and contains 55 tiles.

Even larger set contains pieces with up to 12 dots and is really huge.

Once I printed 24-dot set and had been solving it for a couple of months, but never finished.

On another side you may try 5 dots or even 4 dots sets. They are easier (and much faster) to solve.

Bigger 7-dot set can tile not only familiar 8x9 but also 4x18, 2x36, 3x24 and 6x12.

8x6 rectangle with the rest of them. Though the rectangle is smaller, the puzzle may be more difficult. I never tried this one.Use the form from previous section to choose you own size. Just choose the rectangle whose area is smaller than the area of standard rectangle for specified number of dots. (That is smaller than (n+1)*(n+2)).

You may use the same form to genetate you own variant. Just choose the rectangle whose area is twice (or trice or any other whole number) bigger than the area of standard rectangle for the specified number of dots.

I never tried none of those. It seems like too many possibilities to choose one or another way to tile a rectangle when some of the tiles are absent and/or some of them may be present more than once. This reduces the number of reducing rules which allow you to filter out certain possibilities using logical considerations that make the original puzzle interesting.

....555.... ....632.... ....632.... ....632.... 71110003334 75550005554 74440002224 ....764.... ....764.... ....764.... ....111.... ....222.... ....176.... ....176.... ....176.... ....333....

You may tile 3-dimensional parallelepipeds with 1x1x2 blocks, each unit cube of it containing a number. 4-, 5-, and n-dimensional hyperparallelepipeds can be used as well.

Even in 2-dimensional case the square grid is not the only possible. Triangle grid and hexagonal grid may be used.

On the triangle grid there can be 3 possible regular shapes to tile: equilateral triangles, parallelograms and hexagons. Triangles cannot be tiled with any set of rhombic dominoes (the number of black triangles is not equal to the number of white triangles). Parallelograms are similar to regtangles of a square grid.

Hexagonal grid allows triangle-like, parallelogram-like and hexagon-like shapes.

You need a computer (or a human partner) only to generate a puzzle, not to play it. For example if you print the rectangle with numbers in its cells on a piece of paper you may use tools as simple as a pencil to solve the puzzle.

I played paper version of the puzzle during commute in a bus, in a long flight and once in a boring meeting.

Use standard set or you own.