Penguin (solitaire)

Penguin is a patience, or solitaire, card game invented by David Parlett and played with a single deck of 52 playing cards. Its play resembles that of FreeCell and its predecessor Eight Off. The cards are dealt from left to right into seven columns of seven rows, and the first card dealt is called the beak. When the three other cards of the beak's rank appear they go straight to the foundations, and the next card dealt fills their place so that the tableau has no gaps. The aim is to build each foundation up in suit to the card one rank below the beak. Tableau cards are built down by suit and moved one at a time unless they form a suit sequence, which can be moved as a unit however many cells are free. Seven cells, together called the flipper, each hold a single card, and an empty column accepts only the rank just beneath the beak. A computer analysis of 50,000,000 deals by Mark Masten found that 99.94 percent were winnable with correct play.