DAILY NO. 4 · VERIFIED MEASUREMENTS
The September 25, 2026 puzzle ran from a hockey puck at 7.6 cm to an Olympic swimming pool at 50 m — about 656× apart, drawing on sports. The pair furthest apart was round 5: a basketball hoop is 1.8× as big as a hockey stick.
Puzzle #4 asked about an Olympic swimming pool, a hockey puck, a bowling ball, a surfboard and a basketball hoop. Each answer below gives the measured size, the reference it stood beside and the source behind the number. Want the surprise first? Replay this puzzle — archived days never touch your streak.
Answer: Olympic Swimming Pool — 50 m. An Olympic swimming pool measures 50 m (length / span), which is about 1.4× smaller than the reference, a Boeing 747 at 70.7 m.
An Olympic pool is exactly 50 metres long.
Common miss: players tend to inflate an Olympic swimming pool when it sits beside a Boeing 747 — big things get squeezed, small familiar things get stretched.
Answer: Hockey Puck — 7.6 cm. A hockey puck measures 7.6 cm (length / span), which is 1.3× as big as the reference, a house key at 6 cm.
A regulation puck is exactly three inches across.
Common miss: players tend to compress a hockey puck when it sits beside a house key — big things get squeezed, small familiar things get stretched.
Answer: Bowling Ball — 21.8 cm. A bowling ball measures 21.8 cm (length / span), which is about 1.1× smaller than the reference, an NBA basketball at 24.3 cm.
Every bowling ball is the same width — only the weight changes, from six to sixteen pounds.
Common miss: players tend to inflate a bowling ball when it sits beside an NBA basketball — big things get squeezed, small familiar things get stretched.
Answer: Surfboard — 2 m. A surfboard measures 2 m (height), which is 1.1× as big as the reference, a refrigerator at 1.8 m.
A two-metre shortboard is smaller than most people picture — longboards start near three metres.
Common miss: players tend to compress a surfboard when it sits beside a refrigerator — big things get squeezed, small familiar things get stretched.
Answer: Basketball Hoop — 3 m. A basketball hoop measures 3 m (height), which is 1.8× as big as the reference, a hockey stick at 1.6 m.
The rim is exactly 10 feet above the floor.
Common miss: players tend to compress a basketball hoop when it sits beside a hockey stick — big things get squeezed, small familiar things get stretched.
Sizes are measured along the axis named in each round and link to their published source. Explore the full library by category, or read how scoring works.