Plan the next refill
Emptying a column can rescue the top waste card without needing a matching tableau destination. Check that card before clearing a singleton: it becomes the new base of the column.
Forty Thieves & two-deck builders · Grand Plaza
Build eight foundations from Ace to King, alternating red and black. Plan each empty column around its automatic replacement.
Build foundations up and tableau down, alternating colors. Empty columns refill automatically.
Emptying a column can rescue the top waste card without needing a matching tableau destination. Check that card before clearing a singleton: it becomes the new base of the column.
The next rank must be the opposite color from the foundation top. For example, a red Three can follow a black Two on any foundation that needs it. Several foundations may accept the same card; choose a highlighted destination.
Select a top card, then click a highlighted destination, or drag it there. Double-click moves a card only when exactly one legal destination exists. Tab, Enter, and Space offer the same choices by keyboard.
Undo reverses the move and any automatic refill together. Restart keeps the seed; a URL such as ?seed=123 reproduces the deal.
Red and Black is part of Grand Plaza · Forty Thieves & two-deck builders.