reviewed by Larry Finley (confirmed purchase)
Rating: ★★★★★ (Date Added: Sunday 14 January, 2024)
Easiest to learn of the tetradistic stacks that are better looking than a Si Stebbins. The stack is both a positional calculator stack and a cyclical "next card" calculation stack (cyclical sequential stack). Highly recommended.
reviewed by Larry Finley (confirmed purchase)
Rating: ★★★★★ (Date Added: Saturday 31 December, 2022)
Actually, I don't remember ever purchasing this but obviously, I did. It has some pretty neat stuff and if it was under $10 then it's worth it.
reviewed by Larry Finley (confirmed purchase)
Rating: ★★★★★ (Date Added: Saturday 31 December, 2022)
This is excellent and has one of the first de Bruijn methods used. Like all of Leo's works, this is very good and a must-have.
reviewed by Larry Finley (confirmed purchase)
Rating: ★★★★★ (Date Added: Saturday 31 December, 2022)
I am delighted with this product.
SSPro: To keep an easy "next card calculation" the SSPro has a modified version of the original Si Stebbins thus it is definitely faster and easier to calculate the "next card" than some other stacks but to do this "next card calculation" SSPro could not use the Harry Riser pairs concept thus SSPro is a little slower at the "ACAAN calculation" IMO. The whack-a-mole trade-off.
Bottom line: If a fast easy "ACAAN calculation" is primarily what you want then go with a shadow stack such as 7QS or the Sequoia stack. If a fast easy "next card calculation" is primarily what you want then go with the SSPro.
reviewed by Larry Finley (confirmed purchase)
Rating: ★★★★★ (Date Added: Saturday 31 December, 2022)
Very good. I especially like the clock face analogy and the ability to calculate ACAAN.