this contest will close in approx 6 hours, there are still 5 to be solved, some are incorrect, remember, you can not have only 2 colours the same, or only 2 shapes the same or only 2 shades the same...
Post 3 cards to create a triad where each feature is either the same between all 3 cards or is different on each card.
Each card has 4 features (color, number, shading and shape), and each feature has 3 different possibilities:
- Color: red, green or blue;
- Number: 1, 2 or 3;
- Shading: outlined, striped or solid;
- Shape: square, circle or triangle.