On the run
On three days in each calendar week (Sunday to Saturday) I go for a run, but I never run on two consecutive days.
In the last 12 years there was (a) a year when I went for two more runs in February than in March, (b) a year when I went for four more runs in March than in February.
Which years were those?
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WIN 拢15 will be awarded to the sender of the first correct answer opened on Wednesday 13 May. The Editor鈥檚 decision is final. Please send entries to Enigma 1540, New 杏吧原创, Lacon House,84 Theobald鈥檚 Road, London WC1X 8NS, or to enigma@newscientist.com (include your postal address).
Answer to 1534 Head start: It is 192 metres from Harey鈥檚 house to school
The winner Tim Glanvill of Northallerton, North Yorkshire, UK