7
1
7
7
7
7
1
7
1
}
7+1
8
7
1
15
8
7
1
9
15
8
7
1
10
9
15
4
8
7
1
10
9
15
18
4
14
8
7
1
10
9
7
1
A rectangle built
from 9 squares
1
A rectangle built
from 9 squares
3
1
43
34
A rectangle or
square built from 11
squares.
8
6
7
2
4
A rectangle or
square built from 22
squares.
3
9
35
A rectangle or
square built from 24
squares.
33
14
35
19
29
37
A square built of the
fewest different
squares.
15
24
9
7
6
4
1
15
x
24
9
I made a mistake posting
this puzzle the first time.
I wrongly put a 5 in this
square! See that the two
squares with an X will
always have the same
size!
7
5
4
1
x
Thanks to Kaela Worrell’s
daughter for finding this! I only
half apologize for my mistakes.
Finding impossible problems
and proving that they are
impossible is a very rich
activity! In my own classes I
purposely do it, but this, alas
was an unintentional mistake.
Ouch ;-)