Here are some cheats and tips for the game Columns.
Second magic jewel:
Create one row of normal jewels stacked almost to the top
of the playfield. Allow a vertical space for only two of the
three jewels in the next block to fit.. Watch the preview window
for the next magic jewel block. When it appears, quickly move
it to the top of the prepared stack. The magic jewel will eliminate
the “touching” color jewels, and all of the remaining
jewels will drop down, as will the single magic jewel that was
off the playfield. This single magic jewel will drop down and
eliminate another group of colored jewels.
10,000 bonus points:
Create one vertical column that is empty all the way to the
bottom of the playfield. Watch the preview window for the next
magic jewel block. Position it in a way so it falls down this
column to the bottom.
Create magic jewel:
Begin game play in easy arcade mode. Fill the two columns
on the far left or far right as high as possible with jewels to
create a magic jewel.