Kakuro is a fabulous puzzle which can drastically improve everyone’s number combination skills. The rules are very simple:
- Just like a crossword, fill in the boxes,
- Each box must contain a number from 1-9 and each run of boxes must add up to the total shown on the left or above,
- Digits cannot be repeated in each run, so if a total of 4 is to be completed in 2 boxes, they must be made up of either 3+1 or 1+3, but not 2+2.
Here is an ideal challenge for all Kakuro beginners to try:
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from 2 up to 84.
The 3rd & 7th rows contain the following fourteen numbers:
4 11 13 24 25 27 30 36 42 45 66 70 77 80
What is the sum of the multiples of 4?
Make 259 Challenge
Can you arrive at 259 by inserting 1, 3, 5, 7 and 9 into the gaps below?
(◯+◯)²+√(◯+◯+◯) = 259
Answers can be found here.
Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.