I went back and did World 2 again. Some of the jumps took a good while to get right, but I didn’t have any real problems. At least I remembered all the solutions to the puzzles. I moved on to World 3 and didn’t manage to get all the puzzle pieces before having to stop playing so we could watch Richard Dawkins on the telly. I think I’ve got two left. One I might be able to work out when I go back, but another is completely baffling. It looks like I need to speed something up – but how can I do that when I can only reverse time? Hopefully fresh eyes this evening will reveal the solution.