It is TriPeaks, one of the most famous solitaires in the world.
Take a step to go up and test your brain and luck
How far can I clean it?
Instructions:
TriPeaks Solitaire is a puzzle card game where cards are arranged in a pyramid shape on the table. You remove cards one by one by selecting cards that are one rank higher or lower than the card from the deck. Suit and color don’t matter. If no moves are available, draw a new card from the deck. Consecutive removals earn bonus points, and you win by clearing all cards from the table.