Combine THREE

Combine THREE is a card game where you combine three cards.

For a combination of 3 cards to be valid ALL the statements below must be true:
1. All three cards have the same shapes OR each of the three cards have different shapes
2. All three cards have the same colors OR each of the three cards have different colors
3. All three cards have the same number of shapes OR each of the three cards have a different number of shapes
4. All three cards have the same shading OR each of the three cards have a different shading

Examples of valid combinations are:

Card 1: 2 Blue Filled 'double oval' shapes
Card 2: 1 Blue Dotted 'double oval' shape
Card 3: 3 Blue Outlined 'double oval' shapes

Card 1: 1 Pink Filled 'double square' shape
Card 2: 1 Blue Filled 'double square' shape
Card 3: 1 Orange Filled 'double square' shape

Card 1: 1 Pink Dotted 'spearhead' shape
Card 2: 2 Orange Outlined 'double oval' shapes
Card 3: 3 Blue Filled 'double square' shapes

There are a total of 81 cards in the deck. Each of the cards is unique. Once there are no more combinations possible, the game ends.

You can play this game alone or with your friends/family.