# Math Games and Logic Puzzles

## RGBW

Move balls to make all except two white. See below in comments the proof why it is not possible to make all balls except one 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.
• 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.