Step 3/14 · EG

EG1: Pi

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Six EG1 cases with no yellow corners and one yellow pair on a side.

Goal

The white face on the bottom is done and the bottom layer has two adjacent corners swapped (EG1). The top is the Pi shape. One algorithm solves the whole cube.

How to recognize it

First look at the bottom row of the four sides. EG1 has exactly one side with a matching pair. No side means EG2; all four mean CLL.

Then look at the top row of the four sides, as in CLL: Pi. Each case has the same top layer as the CLL case with the same number. Words used here:

  • Front sticker (or left, right, back): the non-yellow top sticker on that side. On a side with two non-yellow stickers, call them front and rear (or left and right).
  • Matching pair: a side's two top stickers have the same color.
  • Opposite colors: red and orange, green and blue. Two different colors that are not opposite are neighboring colors.

Put the yellow pair on the left. Look at the two right stickers: a matching pair, opposite or neighboring colors. Then compare the front and back stickers.

How to hold the cube

White on the bottom. Hold the top like the CLL lesson with the same shape, shown under the controls. Then turn D so the bottom matching pair is on the back.

The algorithm only works with that pair on the back. The player adds a U at the start or end when needed.

The main idea

Pi 2 is the shortest here, just 7 moves. Pi 1 has an alternative with a y' in the middle, if you like rotations.

Next lesson

Go to EG1: H.

Step 1 / 12

U': Top face: turn 90°, front face goes right

The right side has a matching pair. The front and back stickers match.

Hold the yellow pair on the left side. Turn the bottom layer so its matching pair is on the back.

Found by: Justin Jaffray, Anthony Brooks, Christopher Olson, Sameer Mahmood

Step 1 of 12: U'. Top face: turn 90°, front face goes right