Wedding planners have it tough, and Seat the Guests shows why. Each guest arrives with a number from 1 to 6 and a color, and your job is to find them a chair. A table may never hold the same number twice, and two guests of the same color cannot sit side by side.
Later rounds add couples who must sit together, rivals who refuse to share a table, and chairs that cannot be used. There is no timer, but moves are limited, and you lose when the guest at the door has no legal seat left. Think through an entire table first, checking the number and both neighbors’ colors. Sudoku Classic runs on similar no-repeats logic.