DAILY NO. 15 · VERIFIED MEASUREMENTS
The five objects from the Size It Up puzzle on September 15, 2026, with the measured size of each, the reference it was compared against, a source you can check, and how the community's guesses landed. Want the surprise first? Replay this puzzle — archived days never touch your streak.
Answer: the Perseverance rover measures 3 m (length / span), which is 1.1× as big as the reference, a concert grand piano at 2.7 m.
Perseverance is about the length of a small car.
Common miss: players tend to compress the Perseverance rover when it sits beside a concert grand piano — big things get squeezed, small familiar things get stretched.
Answer: a container ship measures 300 m (length / span), which is 1.1× as big as the reference, the RMS Titanic at 269 m.
A large container ship is almost three football fields long.
Common miss: players tend to compress a container ship when it sits beside the RMS Titanic — big things get squeezed, small familiar things get stretched.
Answer: a birthday cake measures 25 cm (length / span), which is about 1.1× smaller than the reference, an American football at 28 cm.
A 25 cm round is the standard “serves twelve” size.
Common miss: players tend to inflate a birthday cake when it sits beside an American football — big things get squeezed, small familiar things get stretched.
Answer: a large dragonfly measures 12 cm (length / span), which is about 1.1× smaller than the reference, a mirrorless camera at 13 cm.
Dragonflies catch their prey on over ninety per cent of attempts, the best hit rate of any predator.
Common miss: players tend to inflate a large dragonfly when it sits beside a mirrorless camera — big things get squeezed, small familiar things get stretched.
Answer: a computer keyboard measures 44 cm (length / span), which is almost exactly the same size as the reference, a domestic cat at 46 cm.
Full-size boards owe their width to the number pad; tenkeyless models lose about 10 cm.
Common miss: players tend to inflate a computer keyboard when it sits beside a domestic cat — 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.