Lesson 4: Recovery

Blocks on top of holes.

Recovering is done by removing all the lines that cover the hole. This is of course hard when there are more lines.

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It is important to try to give yourself access to the hole after recovering.

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Lesson 2 has shown that S and Z are often used to fill 2 columns. In this case, you should use a T instead.

Recovery by clearing lines

These are examples of recovery by clearing a line.

More examples of the same.

These are examples of recovery by clearing two lines.

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3 lines can only be recovered by providing a place for the J or L to hook onto.

Using a misdrop as a floor.

		You can use a missed I as a floor. Using a T for this will leave a gap.
		Therefore it is better to use a L or J. They can be cleared away neatly.