Find Digits logics : Trivia quiz

On a square field there are numbers. Find all the digits by highlighting the numbers that stand side by side, so that the whole square is filled. Not all, but only the numbers are intended to be filled.
If you are confused and do not see. With each level the complexity of the game increases, and guessing the words is more interesting.

The game is designed for those who like to solve crosswords, play hanging, search for words, make words from letters or just guess them. The main idea is taken from a game like "Hungarian Crossword", but improved and adapted for mobile devices.