The World Cup is well into the swing of the second round of group stage matches, and as the heat is turned up in the tournament so the venns are set to get trickier and trickier.
The task was the same as ever: identify the four players in the venn diagram, then figure out what World Cup fact links them together.
The players were Holland's Khalid Boulahrouz (top) and Giovanni van Bronckhorst (bottom), and Portugal's Costinha (left) and Deco (right). And the link between them? All four were sent off in what is officially the dirtiest World Cup match ever played, the only time in the tournament's history that four players have been red carded.
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Yesterday we gave you two easily-identified players, both among the most famous players ever to turn out for their respective teams.
Naming them should have been easy: France's Fabien Barthez (left) and England's Peter Shilton.
But did you get the link? The pair share the record for the greatest number of clean sheets kept in the World Cup, with ten apiece.