Feathere

Blue box: Both of these statements are true. The gems are in this box.

White box: The gems are not in the blue box. The gems are not in the black box.

Black box: The games are in a box with a false statement. Both statements on the blue box are true.

A: White box

Blue box: The statement on the black box is false. | The black box contains the gems.

White box: Every statement with the word 'blue' is false.

Black box: Both statements on the blue box are true. | The blue box contains gems.

A: Black box.

Blue box: A box that displays the word 'true' is false.

White box: A box that displays the word 'gems' is empty.

Black box: The white box is true and does not contain gems.

I tried Blue, which is wrong.