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The puzzle above is an example of a
"three-square cover-uncover sliding puzzle"
which cannot be solved.
(Note that by using a link on this page outside the game board and its
buttons you will leave the puzzle and go to a different page.)
Yet, it uses the smallest board possible, with sides of only five cells.
The covering square is subdivided into six blocks, the same number of
blocks as in the
simplest variant of this five-by-five 'triscus
puzzle' (which can be solved in 14 moves).
Obviously, it is the shape of these blocks and their position in the
initial arrangement which make it impossible to clear the central square
in its entirety.
Do not despair, however, for there is also a solvable
7-block variant of Uncover the Three by
Three.
If you want to know what the central square looks like without any block
covering it, you may push the REMOVE BLOCKS button.
What you will see then is a table of three rows and three columns with some
text and figures.
This same table can be found in
The Year-Week-Day
System, except that the two yearly inaccuracies of 0.1% are not shown
here.
It demonstrates how much more accurate the
Metric Calendar is than the
traditionally most freakuently used religious-imperial one.
It also demonstrates that you cannot, need not and must not take anyone
seriously who employs that freak of culture to make statistical
claims about such a thing as the differences between the economic data of
two quarters or, worse, months.
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