Pyramid (solitaire)

"Pyramid" is a card game where players make pairs of cards, creating a sum of 13 or 14.
In "Close Mode", cards are places faced down, while in "Open mode", cards are places faced up. The first row has 1 card, second row has 2 cards and so on, till the seventh row with 7 cards.
Note: Even in "Close mode", the seventh row is places faced up.
Leftover cards are stacked on the table as what we call the "Deck". You can also use a combination of the deck and cards of the table.
In "Close mode" all cards except those in the seventh row are placed faced down.
As cards in the bottom row are removed, the higher up cards are turned face up.
In "13-mode", cards with a sum of 13 are stacked and removed from the table. The 13 card (King, K) is removed from the table just by touching it.
Iin "14-mode", cards summed up to 14 are stacked and removed from the table.
When all cards are removed from the table, the game is finished.