Playable solitaire

Forty Thieves

A strict two-deck classic with ten tableau columns, eight foundations and very little room for careless moves.

Rules Challenging Winning (test player) Extreme · 7 % Time About 18 min Decks 2 decks Luck 4/5 Skill 5/5
Starting game…
Our automated player won 7 of 100 deals using the same strategy and computation limit. This is the test player's result, not mathematical solvability or a measured human win rate.

Rules and tips

How to play Forty Thieves

Build tableau columns down in the same suit, one card at a time. Foundations build up by suit from ace to king.

How to play

  1. Deal forty face-up cards into ten columns.
  2. Build down in the same suit.
  3. Move only one card at a time.
  4. Draw one card from the stock to the waste.
  5. Complete eight foundations to win.

Strategy tips

  • Expose and play aces early.
  • Avoid blocking lower cards with high cards of the same suit.
  • Preserve empty columns for essential transfers.
  • Study the board before consuming the stock.

Frequently asked questions

Is Forty Thieves free to play?

Yes. You can play as often as you like, without an account or download.

Can I continue later?

Yes. Your current deal is saved locally in this browser.