Thank you so much for playing and for the feedback! I am genuinely amazed how much depth people find in my game, even things I never considered myself. Glad you enjoyed it!
Oh, and I think I understood the other comment incorrectly. I thought they were able to put two artifacts of the same type in one row, which you can not do (you can't put items of the same color in one row either). But if the items are different in type and color − then you can. I probably worded the tutorial badly and it was not really clear, I'll fix that :)