The club’s chief executive, Paul Lakin, explains how they reached the top so quickly and what it will take to stay there
Per-jail resource control
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The pruned nodes (in red) represent entire regions of space that the algorithm never examines. The points inside those regions are never checked. Compare the "Nodes Visited" count to the total number of points. The quadtree is doing far less work than a brute-force scan.
// Synchronous transforms
Equal (2): Everything in this space must be equal to 2. The answer is 2-6, placed vertically; 2-1, placed horizontally.