My dad (now 93 years old) used to play a two deck solitaire game with the cards laid out in 10 columns as shown in the picture. In brief:
- Two Decks
- 10 columns
- 1st column has one card, second column has two cards . . . tenth column has ten cards.
- Cards alternate face up, face down
- Remaining cards are used one at time and only the most recent card that is top of the pile can be used.
I am looking to identify this variant and see if I can find an online version for him.