Math Games and Logic Puzzles

RGBW

Move balls to make all except two white.

• Select one position, then another. If the two balls selected have no colors in common, then a ball with the colors combined will be placed in the second position selected, and a ball with the second color will appear in the first position. For example, if you move red to green, then on the second place there will be red-green and on the first place – green. So, the order of moving matters.
• If the two balls selected have a color in common, then the resulting ball will not have this color. For example, combining a red-green ball with a red-blue ball will produce a green-blue ball.
• A white ball appears when a two-colored ball is merged with a ball of the remaining color (e.g., a red-green ball merged with a blue ball).
• Merging with a white ball does not change the color, and on the place of white the second color will appear. For example, white and green will give green and green.

ProductSum

Fill in the cells with numbers to make all equalities correct.

The cells with the same background should have the same values.

KnightScore

Start from the top left corner and move (as a knight in chess) to get the highest score.

Click on a cell to make a move.

You can't move on cells with zero values.

Avoid cells with negative values!

You can only make a move like a knight in chess:

ColoredCrossword

Complete the crossword by filling the cells with letters.

You're given 8 letters. 6 of these letters (and only they) are in the crossword. The other 2 letters are not.

The cells with the same background should have the same letters.

Sudoku

A well-known game where you need to fill the cells with digits from 1 to 9.

You can enter your own puzzle or generate one.

No row, column, or square can contain repeating digits.

GuessFigures

Guess all hidden figures.

The figure is defined by its shape, color, and type (filled or not).

Select a figure from the given ones, click on it – it will become active. Click on the cell to which you want to move the figure – the figure will be moved (if you want to remove the figure from the cell, click on it).