Getting through the prisms.
Put one of the prism in the direct line of light on the left and in direct line with one of the crystal not all the way to the right. If the light bends away from the crystal, choose another prism until it goes threw it. Repeat the process again with the second crystal away from the line at the right. Then put the rest of the prisms in line with the deflected light so they shine on the remaining crystals. Good luck.
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