Colored pieces on the puzzle and black
Colored pieces on the puzzle and black markings around the location of the pieces is something that I have experienced has given the joy of mastery even to those who find puzzles a bit difficult!
Started with this last year and think the tip should be shared. To make it more difficult - use only 2 colors, or as I have done here with different colors on all the pieces. I also have a piece in gold color (alcohol marker) on this board, and it is always puzzled first.
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