Sunday Times Teaser 2590 – Moving Downwards
by Graham Smith
Published: 13 May 2012 (link)
A three-by-three array of the nine digits 1 — 9 is said to be “downward moving” if each digit is less than the digit to the east of it and to the south of it — see, for example, the keypad on a mobile phone.
If you knew the sum of the digits in the left hand column and whether the middle digit was even or odd, you could work out my arrangement.
What is it?