YesNo Puzzle Collection

Five men were walking together on a country road. Suddenly, it started to rain. Four of them quickened their pace, but the fifth man was in no hurry. Eventually, all five arrived at their destination at the same time. The four who sped up were soaked, but the fifth man was completely dry.

In Western countries, doors always open inwards. Conversely, in Japanese homes, doors always open outwards.

A linguist deciphers binary code etched on a Mayan prophecy tablet, which compiles into a Windows Blue Screen of Death. A giant metal monolith is discovered under the Antarctic ice, its surface temperature consistently maintained at 97.7°F (36.5°C).

A village holds an annual 'flying ceremony' where participants ascend hundreds of feet into the air before turning into blood rain. Geologists discover the local gravity is 0.3% lower than the surrounding area, and the bottom of an ancient well is etched with the coordinates of an exoplanet discovered by NASA's Kepler program.

A programmer develops a zero-latency brain-computer interface, and users gradually lose their physical bodies. The server room consistently maintains a temperature of 98.6°F (37°C), and human hair and the smell of dental anesthetic drift from the vents.

All patients in a mental hospital suddenly regain lucidity, insisting it is 1985. MRI scans show unknown metal fragments embedded in their cerebral cortex, etched with the names of 2023 Nobel laureates.

An archaeological team discovers the carcass of a pregnant mammoth in a glacier, its fetus holding a nano-scale mechanical device. All contemporary pregnant women suddenly gain the ability to speak lost Sumerian, and ultrasound images show their fetuses have gear-shaped pupils.

A city experiences a 'reflection plague' where victims are dismembered by their own shadows. The observatory reports a new crater on the Moon's surface, its shape perfectly matching the blood splatter pattern at the crime scenes.

In the slums, a blood-colored coin circulates. After use, bill tattoos appear on the skin. The richest man's body is found with his bones replaced by ATM parts, and his fingerprints match a Federal Reserve chairman from a century ago.

Guests rapidly age after checking into a hotel, while the innkeeper maintains a youthful appearance. The underground wine cellar contains 1932 vintage wine bottles with modern electronic chips floating inside.

A city loses 37 people monthly, but the population census shows the total number remains unchanged. The slums are swarming with homeless people who claim to be 'forgotten by the world,' and their pocket watches are always stopped at midnight.

Residents of a small town experience the same nightmare for a week, featuring an eyeless giant devouring children. On the 8th day, all adults disappear, leaving only children drawing precise mathematical formulas on the walls.