Turn a corner

Learn what one corner turn of the pyramid puzzle moves, and why the tips can wait.

What one corner turn moves

Every face is one color.

The pyramid has four corners. Turning one takes five pieces round with it: the small tip, the single piece under the tip, and the three edge pieces beside them.

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Only the three edge pieces change places. The tip and the piece under it turn where they stand, and they turn together, so their alignment with each other does not change.

That is why a corner turn can never put a tip right and can never spoil one. The tips are free. Leave them until the end and turn each one on its own.

Lesson help

A corner turn swaps three edge pieces and never changes whether a tip is right, so put the tips right last.

About this lesson

Try the method in a practice when you are ready.

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What one corner turn moves

The pyramid has four corners. Turning one takes five pieces round with it: the small tip, the single piece under the tip, and the three edge pieces beside them.

Only the three edge pieces change places. The tip and the piece under it turn where they stand, and they turn together, so their alignment with each other does not change.

That is why a corner turn can never put a tip right and can never spoil one. The tips are free. Leave them until the end and turn each one on its own.

Every face is one color.

One turn of the top corner

Start from the solved pyramid and turn the top corner once.

The three edge pieces around the top swap round. On the green face the four stickers nearest the top are now blue. On the blue face they are now red. Every sticker further from the top stayed where it was.

The tip on top went round with the piece under it, so those two still match each other.

Before
After one turn of the top corner

Two turns, then back

A corner has three positions, not four. Turning it the same way three times brings it back to the start.

Someone turns the top corner the same way twice. Work out the quickest way back.

After two turns of the top corner

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What is the quickest way back after two turns of one corner?

  1. The same turn once more
  2. The same turn twice more
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The same turn once more

Correct. Three of the same turn bring a corner back to the start, so one more finishes the set.

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