Solving optical illusions, such as finding an odd letter, requires focus and strategy ... to spot inconsistencies or patterns that stand out. Look for slight variations in shape, spacing, or ...

Some of the most mind-bending illusions involve numbers or letters hidden in a dense clutter ... in which the brain is ...

The leader (“Israel’s renewed siege of Gaza”, FT View, March 12) reports that “at the weekend [Israel] cut the remaining trickle of electricity into the besieged strip. The goal is to ...