Monte Carlo is a really easy pair matching game. It reportedly solves with about 5% probability.

Find cards that have the same face value (rank) and drop them onto each other. The cards must touch each other either vertically, horizontally or diagonally.

Whenever you have used up your hards you can fill empty spots by touching the stock-pile. Shrink the tableau by touching the empty stock.

PAIRS RULE

Switch diagonal matching off and row/column matching on to make things a bit harder than Monte Carlo.

MIXED RULE

Switch both rules on to make things really easy.

Good Luck!