Chess traces its roots to chaturanga in sixth-century India

Trade and conquest carried chess into Europe by the 11th century

After spreading through Persia, chess traveled along Islamic military and trade routes into North Africa and Moorish Spain by the 10th century. By the 11th century, it had taken root across much of Europe, flourishing in courts and monasteries.

Chess is played by an estimated 600 million people worldwide

Chess remains one of the most popular games in history, with roughly 600 million players across the globe. The game thrives casually in homes, schools, and parks, while also sustaining robust online communities and professional tournaments.

Chess is played on an 8×8 board with 16 pieces per side

Chess begins with two players facing off on a checkered 64-square board. Each controls 16 pieces—king, queen, rooks, bishops, knights, and pawns—with the goal of checkmating the opposing king.

The Royal Game of Ur, which dates back as far as 2600 BCE, is believed to be one of the oldest board games in the world.

The first official World Chess Championship was held in 1886

The inaugural world championship took place across New York, St. Louis and New Orleans in 1886, where Wilhelm Steinitz defeated Johannes Zukertort. Steinitz became the first recognized world champion, establishing the modern era of organized competitive chess.

There are more chess game variations than observable atoms in the universe

Mathematician Claude Shannon estimated there are 10 to the 120th power variations of chess games possible. Known as the "Shannon number," this is more than the estimated number of atoms in the cosmos.

Yoga dates back to about 1500 BCE

The earliest known mention of the word is in the Rig Veda, one of the four canonical Hindu texts. Rishis, or sages, then documented its evolution in the Upanishads, the Hindu scriptures. Much of the modern understanding of Yoga comes from “Yoga Sutras of Patañjali,” which outlines the practice’s eight elements, including physical postures and breathwork.

A look at historical ciphers, from the Spartan 'scytale' to the Navajo Code Talkers

From the Greek word for "hidden writing," cryptography in Ancient Greece took the form of batons around which a long strip of leather or parchment was wrapped, after which messages were written. Recipients needed a scytale of the correct width to encircle received ribbons and reveal the message. Members of the Navajo Nation created a code that remained unbroken throughout its use in World War II.

Hikaru Nakamura became a chess star both on the board and online

A five-time US champion, Hikaru Nakamura helped chess expand its popularity through streaming. His Twitch and YouTube audiences number in the millions, drawing younger fans and fueling the game’s surge in popularity worldwide.

British rule in India wasn’t deliberate—it developed from trade

This academic explainer shows how Britain’s rule in India evolved from unplanned trading footholds to complete imperial control. It examines the decline of the Mughal Empire, economic expansion, racism, rebellion, and the mixed legacy of institutions and exploitation that still shape India today.

GZA of Wu-Tang Clan says chess taught him strategy in life and music

In a VICE interview, rapper GZA revealed how speed chess sharpened his mind on tour and shaped his creative strategy. Chess, for him, is more than a game—it’s his framework for life.

Table tennis originated as a leisure activity for the upper class

The sport's origin story can be traced back to 19th-century England, where it was known as "whiff-whaff." Players initially used a dinner table to play. After decades of evolution, ping-pong reached its "Golden Age" of popularity in the 1950s and 1960s.

What it means to call a bracket 'chalk'

If the tournament is rather boring, you might hear a curious word getting thrown around: "chalk." In short, it means that the favorites have been winning. The word's origins go back to horse racing and its sportsbooks, where bookies would post odds on chalkboards. Over time, the bookies came to be known as "chalk" and, years later, tournaments (and their brackets) that seemed to favor those bookies earned the name, too.

Kulfi, an ice cream predecessor, dates back to the 16th century

Historians believe India’s royal court began freezing condensed milk, pistachios, and saffron in conical molds to create the sweet treat. Today, it’s often served on a stick and covered with chopped pistachios.

Cricket used to be America's pastime

Before baseball, American football, basketball, or hockey ever organized in the US, there was one sport which could be found up and down the East Coast: cricket. The second-most popular sport in the world, cricket is mostly ignored by Americans, despite its prevalence in early American history. Learn more about the forgotten role cricket played in the US with this article.

The history of infographics: cave art to interactive visuals

When did humans first create infographics? This article and related infographics detail how artistic data representations have evolved alongside humans and other hominins. The roots of infographics can be traced back to cave paintings, such as...

The Chumash manufactured shell beads for thousands of years, eventually as money

The practice was unique to the Chumash among North American Indians. Some researchers have made the case theirs was the first use of money on the continent.

View an illustrated history of Microsoft Solitaire

Included in Windows 3.0 in 1990, to help first-time computer users become familiar with using a mouse, the game featured a dozen unique card back designs. The Windows XP library of preinstalled games added Spider Solitaire, which became the most-played game on Windows PCs by 2005.

Magic: the Gathering was inspired by baseball cards

Richard Garfield originally pitched a game publisher on a more complex game about programming robots, but he was told that they were looking for something less expensive and more portable. Inspired by the way baseball cards were collected and traded, he came up with the idea for Magic: the Gathering, which gave players packets of random cards, effectively pieces of the whole game, rather than the entire deck.

What did the earliest swords look like?

That depends on where you draw the line between daggers and swords. According to current evidence, the first swords appeared 5,000 years ago in what's now Turkey. Unfortunately, evidence of the earliest swords is colored by survivorship bias; It's...

LA's oldest Mexican restaurant pioneered the burrito in America

El Cholo Spanish Cafe opened in 1923. It was among the first to serve several now-common Mexican dishes, including burritos in the 1930s, guacamole in 1955, and nachos in 1959.

We're in the middle of a decadeslong cholera pandemic

In 1961, the world's seventh recorded cholera pandemic started in South Asia, and it has continued through the decades. India and Bangladesh are at particular risk. This pandemic is driven partly by conflict, population displacement, extreme weather, and poor water infrastructure.

Ancient Chinese marriages began with an elaborate marriage proposal and acceptance between families

The chief objectives of early Chinese marriages involved joining and enhancing the two families and ensuring succession with numerous descendants. Chinese couples still compare astrological signs, although some of the more elaborate rituals of betrothal gifts and sleeping in the “cock loft” are far less common.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

The Iroquois Confederacy's political structure may have shaped the US Constitution

Centuries before the US existed, six Indigenous nations—the Mohawk, Oneida, Onondaga, Cayuga, Seneca, and Tuscarora—united under a shared constitution known as the Great Law of Peace. Some historians argue that the framework of federalism and representative councils influenced the American founders.

Tinder revolutionized dating when it introduced swipe-based interactions

Many dating apps today allow users to "swipe right" to match with someone and "swipe left" to opt out of the match, but Tinder did it first, introducing swipe-based interactions in 2013. The idea for swipes came from the founder's desire to gamify dating—Tinder's early interface was based on a deck of cards that users could sort.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

Crows are believed to have intelligence on par with a seven-year-old child and demonstrate complex behaviors, from problem-solving with tools to recognizing human faces.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

The Brothers Grimm were lawyers before they were storytellers, and became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

Search a massive database of over 4 decades of clues from the TV quiz show 'Jeopardy!'

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

Fast-casual restaurant Chili's is experiencing a resurgence, with its parent company recently reporting a nearly 32% increase in sales, thanks to passionate Gen Z fans on TikTok.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

According to the physics of black holes, our 4D reality may be a hologram—a projection of information coded on a 2D surface on the edge of the universe.

Ebola is a filovirus, meaning it resembles a thread under a microscope, though it sometimes twists and can resemble a bowl of spaghetti.

Poison ivy's characteristic rash is caused by an allergic response to an oily compound in the plant called urushiol.