My Day as Gilbreath

Calendar Card Solver

Choose a date. The solver looks for two card groups whose red product + black product equals that date number, while preserving the Gilbreath #2 restrictions used in the trick.

Find a Setup

Date Date format Notation

Try standard and zero-suppressed forms Standard form only Zero-suppressed form only

American zero-suppression removes the leading zero from the day only. European zero-suppression removes leading zeroes from day and month.

Solutions to show

Solutions

Solver ready. Choose a date and click “Find Solutions.”