Can You Reach 8K?

In the game Can You Reach 8K your task is to reach 8K in one of the fields. It sounds like a lot, but you can play the game longer. To achieve the result, you need to connect squares with the same values in chains. It doesn't matter how it runs: vertically, horizontally or diagonally. There must be at least three values in the chain. After connecting, at the end there will be one square with a doubled number. Make sure that there are always options for a move on the playing field. Does this mean at least three of the same number must be next to each other in Can You Reach 8K?