A logical puzzle, a well-known and familiar game "2048" but slightly modified. The player's task is to combine adjacent cells with the same numbers to form as large a chain as possible. The main feature is that you can combine numbers of a higher value than the original chain, but not less. For example, by connecting two twos, you can continue the chain with twos. Or you can move on to fours and so on until there are no more of the desired adjacent cells left.