4D - Calculate Prize

win 4d1. Understand the 4D Lottery Structure. Before diving into strategies, understanding the mechanics of the 4D game is essential: Choosing Your Dits: Singapore 4D requires4D or 4-dits is one of the most popular lotteries in Singapore besides Toto and Singapore Sweep. In this game, players can bet on any 4-dit number from 0000 to 9999.