Rules of the game
Algebra Sudoku is just like the ordinary number game
sudoku, except that the numbers are replaced by
Your task is to complete a diagram with nine different
expressions. You should place the expressions such that in every
row, in every column, and in every outlined 3x3 group,
each expression appears exactly once.
In fact, the information in the diagram is enough
to complete the sudoku, but it is easier and more
fun if you follow the hints that are given along
with the diagram. If you follow the hints
in the sequence in which they are given
it is always unambigous where you should place
the next expression.
For example, have a look at Algebra Sudoku 5:
Hint 1 reads:
If 0=4c-44 then ...
B, top right, middle left, E, G
Use your mathematical skills to translate
the first part of the hint,
"If 0=4c-44 then ...",
into "c=11". Next, look at the second
part of the hint, "B, top right, middle left, E, G".
This means that you should be able to place
"c=11" in the column labeled B, the
top right and middle left 3x3 groups, and
the columns labeled E and G, in this sequence.
Indeed, the column labeled B has 4 empty spaces,
but since "c=11" already appears
at row 4 (namely, at D4), position B4 is excluded.
Similar, B8 and B9 are excluded because "c=11"
already appears in the bottom left 3x3 group
(at C7). The only possibility left for "c=11"
in the column labeld B is at position B1.
Similar for the top right 3x3 group.
In the original diagram, "c=11" could be placed at
either G1, H1 or H2, but since in the previous
step you placed "c=11" at B1, positions G1 and H1
After Hint 1 you should follow (surprise!)
Hint 2, and so on, and finally complete the
diagram by following the last hint.