Eureka!
From 2 to 5
Christmas quiz (multiple choice)
Smiles
Doggos
100
During his lifetime, Alfred Nobel patented 355 different inventions and discoveries, but he became world-famous for this dangerous invention.
Dynamite
100
That's how many train stations are located on Moscow's Komsomolskaya Square.
Three (Leningradsky, Yaroslavsky, and Kazansky)
100
In which country do they eat Kransekage, a “wreath cake” comprised of concentric rings of cake layered on top of each other?
Denmark
Belarus
Germany
Sweden
Denmark
100
The cartoon's main character overcame his fears by smiling at his own reflection in the water and, in his joy, sang, "A smile brightens a gloomy day."
Little Raccoon
100
These include the American, Irish, Tibetan, and the popular American Staffordshire.
Terriers
200
"My brother invented cinematography overnight," said Auguste Lumière. Louis-Jean himself claimed that it was precisely this affliction/disorder of his that facilitated the discovery.
Insomnia
200
Of the seven children of the American Cummins family from Virginia, exactly that many were born on the same day—February 20th—although they are not identical twins.
Five
200
What is traditionally tossed into rivers at New Year in Romania?
Stones
Soybean
Flowers
Coins
Coins
200
This celestial body smiles on the Polish Order of the Smile. The order is awarded to adults who bring joy to children.
The Sun
200
A healthy dog can have between 16 and 20 of these, with some dogs retaining vestigial ones.
Toes/Fingers
300
On the streets of Berlin, a wall of these spore-forming plants is designed to purify the air of dust, nitrogen oxide, and carbon dioxide, while producing oxygen. 
Moss
300
The classic version of Rock Paper Scissors has three objects. In The Big Bang Theory, Sheldon Cooper added exactly this number of additional objects to the game.
Two (Lizars and Spock)
300
When was the first gathering held at Time Square on New Year’s Eve?
1895
1904
1909
1914
1904
300
Guitarist Brian May founded the band "Smile" in 1968 and invited drummer Roger Taylor. With the arrival of a new vocalist in 1970, the band changed its name to this one.
"Queen"
300
For his birthday, he finally received the gift he cherished—a dachshund puppy. The name is required.
Svante Svantesson, The Kid
400
Physicists from the University of Tokyo have managed to create just that, at 1,200 teslas, which is 50 million times greater than Earth's. This is a record for a closed, isolated room.
Magnetic field
400
That's how many years former pirate Benjamin Gunn spent alone on Treasure Island.
Three years
400
In which country do people wear polka-dots and eat round fruits on New Year’s Eve for prosperity in the upcoming year?
Iceland
Paraguay
Papua New Guinea
Philippines
Philippines
400
The sweet smile of this Australian endemic is merely an illusion: it has a vicious nature, can bite, and can painfully scratch with its hind legs. 
Quokka
400
The rank-and-file pack members always do this after the leader. This rule must be followed at home as well, if you want the dog to see you as the leader.
Eating
500
In 1814, Austrian tailor Josef Madersperger created a needle with this feature. Similar needles are also used in sewing machines.
Eye on the tip
500
That's exactly the number of "February 19, 1861" medals minted, but only the Emperor was awarded: apparently, no more worthy individuals were found.
Four
500
What colour underwear do Colombians wear on New Year’s Eve to bring them good luck?
Blue
Red
Yellow
White
Yellow
500
These ancient Roman priests and diviners were credited with a mysterious smile, supposedly mocking their gullible fellow citizens.
Augurs
500
According to the plot, Mary Gradova mourned the death of her beloved German Shepherd. Inna Churikova got into character and cried for a long time, even though the dog-actor was safe and sound. This novel was adapted into a film.
"Moscow Saga"