This software tests your ability to predict the winning number of tricks in a card game.

At the beginning of each round, each player receives 13 cards. Players can view their cards by clicking on the "Show cards" button on the screen, then choosing the number of tricks they think they can win by clicking on the bid button. Players can even bid "blind nil" by clicking on the corresponding button. Here, players will not be allowed to view their cards before bidding, and their bidding number will be set at zero.
When all players have made their bids, they take turns playing a card from their hand. The leading suit is determined by the first card played in each trick, and the other players must follow suit, if possible. If a player doesn't have a card of the leading suit, they can play any card. It is important to note that Spades cannot be used to start a trick unless another Spade has already been played in previous tricks. Players must also finish their turn within the allotted time limit, or they will lose.
At the end of each round, points are awarded based on the number of tricks won. If the total number of tricks won by a team is equal to their combined bids, they can receive points equal to the combined bid multiplied by 10. If the number of tricks won is not equal to the combined bid, no points are awarded.
Overall, Spades is an exciting and strategic game that is sure to keep players engaged from beginning to end. With its unique gameplay mechanics and easy-to-use interface, this software is a must-have for anyone who enjoys card games.
Version 1.6.1: Updated the time limit in the bidding and playing phases to 30 seconds