The 8 is a progression of 2 as 2,4,6,8 next column is 1 as all the others were 1, next column 1 is sequence of 0,1,0,1,last row is 3 in sequence 0,1,2,3.
I did have the app. I had to use hints/solutions on some of them. I'm particularly bad at the puzzles with the 4 squares that are mostly pattern based. I finished the 100 levels (again, with some help) and then deleted it. Now trying one called Pythagorea, which will probably go soon due to frustration with how the app functions.
I LOVE word games - but not crosswords! Although, I do bore easily with the repetition sometimes. I just had a knot untying game that I also gave up because it was repetitive.
Try some of the word puzzle apps - they get really difficult (for me). There’s a crossword word puzzle that in the higher levels I just quit playing. Like most app games the lower levels are fun, but the higher levels become difficult and cause me stress - which I don’t need!
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