COLL: Fish

Goal

The first two layers are done and the top has a yellow cross. The corners form the Fish shape. One algorithm makes the top yellow and puts the corners in place.

When to use it

Use COLL after F2L when the top already has a yellow cross (as after 2-look OLL: edges). One algorithm makes the top yellow and puts the four corners in place. What is left is one of the four edge PLLs (Ua, Ub, H, Z) from 2-look PLL: edges.

COLL has 42 cases: 40 split into 7 lessons by top shape, and 2 with the top already yellow in 2-look PLL: corners.

Learned 2x2 CLL? The names, numbers, grips and recognition are the same, because COLL only looks at the corners.

How to recognize it

Only compare top corner stickers with each other. Words used here:

• Only look at corner stickers: the two stickers at the ends of each side's top row. Ignore the edge sticker in the middle.
• Front sticker (or left, right, back): the non-yellow top corner sticker on that side. On a side with two of them, call them front and rear (or left and right).
• Matching pair: a side's two top corner 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 corner at the front left. Compare the front sticker with the right sticker, the back sticker and the left side's rear sticker. One always matches and one is always opposite.

How to hold the cube

White on the bottom. Every case in this lesson uses the same grip, shown under the controls. The player adds a U at the start or end when needed.

The main idea

Fish 2 is the Fish shape from 2-look OLL: corners with the corners already in place, so that algorithm also solves it. The other cases make the top yellow and move the corners at the same time.

Check before moving on

The top is all yellow and each side has two matching top corners. The edges may still be off; an edge PLL fixes them.

Next lesson

Go to COLL: Reverse fish.