Challenge has finished
Enter images which show the intensity of concentration.
Sunday, 18th December, 2011 (GMT)
Sunday, 25th December, 2011 – Saturday, 31st December, 2011 (GMT)
Sunday, 1st January, 2012 – Saturday, 7th January, 2012 (GMT)
Capture date rules:
Maximum number of entries per user:
Maximum number of entries in challenge: