Chess has been shaping sharp minds for around 1,500 years, making it one of the oldest strategy games still widely played today. From the ancient Indian courts where it began as a war simulation called Chaturanga, to the school chess clubs and online tournaments of the 21st century, the game has travelled across continents and cultures without losing a single move.
At LearningMole, we think chess is one of the richest topics for bringing together history, maths, and critical thinking in a way that genuinely excites primary-aged children.
Understanding a few key facts about chess does something remarkable: it transforms the game from a complicated set of rules into a story. Children who know that the word “checkmate” comes from the Persian phrase “shah mat” (meaning “the king is finished”) suddenly see the board differently.
Those who grasp that the queen was once one of the weakest pieces on the board start to think about how ideas change over time. These are exactly the kinds of curriculum-linked connections that UK teachers and parents can use to make chess genuinely educational, not just recreational.
This guide covers the five greatest chess facts, selected because each one links naturally to something in the UK National Curriculum: the maths behind the Shannon Number (KS2 large numbers and combinations), the history of the Lewis Chessmen (British medieval history), the global journey of the game (KS2 world history and geography), the linguistics of checkmate (language and etymology), and chess as a wartime tool (WWII studies).
Whether you are a teacher planning a lesson starter, a parent supporting home learning, or a child who has just discovered the game, these facts will change the way you see the 64 squares in front of you.
There are more possible chess games than there are atoms in the observable universe. That is not a figure of speech; it is mathematics. In 1950, American mathematician Claude Shannon calculated that the number of possible games is approximately 10¹²⁰ — a 1 followed by 120 zeros. For comparison, scientists estimate there are roughly 10⁸⁰ atoms in the observable universe.
For KS2 children studying large numbers and powers of 10, the Shannon Number is an extraordinary entry point. You can start with something simple: on the very first move, White has 20 possible choices. Black then has 20 responses. After just one move each, there are already 400 different board positions. After two moves each, that number rises to over 8,000. By move five, we are past 69 billion possibilities.
“The Shannon Number is one of my favourite ways to show children that maths lives everywhere, not just on worksheets. When a child realises that this game involves more choices than there are atoms in the universe, they look at numbers completely differently.” — Michelle Connolly, Founder of LearningMole and former teacher with over 15 years of classroom experience
This connects directly to the KS2 mathematics curriculum objectives around reading, writing, ordering and comparing numbers up to 10,000,000 and understanding the concept of powers. A classroom activity that works well: ask children to double a number repeatedly, starting from 1, and see how quickly it grows. By step 20, they will have passed 1,000,000. This kind of exponential thinking is the foundation of understanding what makes this game mathematically extraordinary.
No computer has ever solved chess; that is, no machine has determined with certainty whether the game results in a win for White, a win for Black, or a draw if both sides play perfectly. The Shannon Number explains why: even the most powerful computers would need billions of years to work through every possibility. This game is, by any mathematical measure, unsolvable.
| Modern Name | Ancient Name (Sanskrit/Persian) | Original Role in Chaturanga |
|---|---|---|
| Pawn | Padati (foot soldier) | Infantry — moved one step forward, died in vast numbers |
| Rook | Ratha (chariot) | Powerful war chariot, moved in straight lines as today |
| Knight | Ashva (horse) | Cavalry — the only piece that could leap over others |
| Bishop | Gaja (elephant) | War elephant — originally moved diagonally two squares only |
| Queen | Mantri (counsellor/vizier) | A weak piece; could only move one square diagonally |
| King | Raja (king) | The objective — same as today, one square in any direction |
Note for teachers: the transformation of the queen from the weakest piece (Mantri, or counsellor) to the most powerful is a fascinating historical puzzle. The change happened in Europe around the 15th century, possibly influenced by powerful historical queens such as Isabella I of Castile. This makes a natural discussion point in history lessons covering the medieval period.
Chess originated in India during the Gupta Empire, around the sixth century AD. The earliest form of the game was called Chaturanga, a Sanskrit word meaning “four divisions of the military”: infantry (pawns), cavalry (knights), elephants (bishops), and chariots (rooks). The game was played on an 8×8 grid called an ashtāpada, the same dimensions as the board we use today.
From India, the game travelled to Persia, where it became known as Chatrang and later Shatranj. When Arab forces conquered Persia in the 7th century, they adopted the game enthusiastically, and Islamic scholars wrote some of the earliest chess manuals. Through trade routes and the Moorish conquest of Spain in the 8th century, this game arrived in Europe. By the 10th century, it had spread across the continent.
European players gradually replaced the original pieces with figures from their own social order — the Persian firzan (vizier or counsellor) became the queen; the Persian fil (elephant) became the bishop, reflecting the church’s central role in medieval life. Each substitution tells us something about how medieval European societies were organised, making the history of this game a genuine window into the past.
For teachers covering world history or geography at KS2, chess provides a perfect case study in how ideas travel across cultures. The game also appears in Arabic, Chinese, and Indian curriculum strands that many schools include as part of broader diversity in education. LearningMole’s history and geography resources offer curriculum-aligned materials that can extend this discussion beyond the board.
In 1831, a crofter on the Isle of Lewis in Scotland discovered a remarkable cache hidden in a sand dune near Uig. Inside were 93 chess pieces, carved from walrus ivory and whale tooth, depicting kings, queens, bishops, knights, rooks, and pawns in extraordinary detail. They are known as the Lewis Chessmen, and they are among the most recognisable artefacts in British history.
The chessmen were carved in Norway around the 12th century, most likely in Trondheim, and were probably en route to be sold when they were buried for safekeeping and never recovered. They show the medieval world in miniature: kings with swords across their laps, queens with hands pressed to their cheeks in worried contemplation, bishops in mitres, and knights on horseback. Eleven of the pieces are held by the National Museum of Scotland in Edinburgh; the majority are in the British Museum in London.
For KS2 history lessons on the medieval period or Viking Age, the Lewis Chessmen are an outstanding primary source. Children can discuss what the carvings tell us about medieval social hierarchy, the role of the church, and the importance of warriors. They also raise questions about trade routes between medieval Scandinavia and Scotland, linking to broader curriculum themes about how Britain was connected to Europe during this period.
“Physical artefacts like the Lewis Chessmen make history tangible for children. When they see a worried-looking queen carved from walrus ivory 900 years ago, they stop thinking of history as dates on a page and start seeing it as real people making real decisions.” — Michelle Connolly, Founder of LearningMole and former teacher with over 15 years of classroom experience
The Lewis Chessmen gained a new generation of admirers when several of them appeared in a certain well-known British film franchise, though we will leave children to discover that connection for themselves.
Every chess player knows the word “checkmate”, but few know where it comes from. The phrase derives from the Persian “shah mat”, which translates most accurately as “the king is finished” or “the king is helpless”. Some scholars prefer “the king is dead”, but the consensus is that “mat” in Old Persian conveyed helplessness rather than literal death.
When Arab players adopted the game from Persia, they kept the phrase “shah mat”. European players then heard the Arabic version and adapted it into their own languages: the French “échec et mat”, the Spanish “jaque mate”, the German “Schachmatt”, and eventually the English “checkmate”. The word travelled the same route as the game itself — from Persia through the Arab world to Europe.
For language-focused lessons, the etymology of chess vocabulary is rich material. “Rook” comes from the Persian “rukh”, meaning chariot. “Bishop” replaced the Persian “fil” (elephant) in European languages. The word “chess” itself derives from the Persian “shah” (king), via the Old French “esches”. In several South Asian languages, the game is still called “Shatranj”, preserving its Persian name.
In many Asian countries, different versions of chess preserve ancient names that European players changed. In Hindi, the chess pieces are still called by their original roles: the rook is sometimes called “hathi” (elephant) by informal players, the knight remains “ghoda” (horse), and the pawn is “pyada” (foot soldier). These linguistic traces connect children learning about world languages to the living history of the game.
During the Second World War, the British military intelligence unit MI9 devised an ingenious way to help prisoners of war escape from German camps. Working with the games manufacturer John Waddington Ltd, the same company that produced Monopoly, MI9 created specially adapted chess sets that concealed escape tools inside them.
The hollowed-out chess pieces contained compasses, silk maps printed on thin paper, and in some cases, small tools. The sets were sent to prison camps through fake charities that the Germans were unaware were fronts for MI9. Prisoners who received the parcels knew to look for a small red dot on the box, which signalled that the set contained escape materials. The chessboard itself could also contain maps hidden beneath the playing surface.
This story captures children’s imaginations precisely because it sits at the intersection of history and ingenuity. For KS2 teachers covering World War Two, the MI9 chess sets illustrate how ordinary objects were repurposed for extraordinary purposes. They also demonstrate the importance of codes, secret communication, and problem-solving under extreme pressure, themes that naturally connect with both history and PSHE discussions about courage and resourcefulness.
It is worth noting that this was not an isolated example of chess being used in wartime. Chess was played extensively in concentration camps and prisoner-of-war camps throughout the war, sometimes as a way of maintaining mental discipline and hope. Several chess grandmasters of the post-war period credited their survival partly to the mental focus the game provided.
| Fact | Number | Mind-Blowing Comparison |
|---|---|---|
| Possible chess games (Shannon Number) | 10¹²⁰ | More than the estimated atoms in the observable universe |
| Age of chess (approximate) | 1,500 years | Older than the printing press, gunpowder reaching Europe, and the Norman Conquest |
| Longest recorded game | 269 moves | Nikolić vs Arsović, Belgrade 1989 — lasted over 20 hours |
| Pieces per player at start | 16 | 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, 8 pawns |
| Lewis Chessmen discovered | 1831 | More than the estimated number of atoms in the observable universe |
| First chess world champion | 1886 | Wilhelm Steinitz defeated Johannes Zukertort in the first official world championship |
| Squares on a standard board | 64 | Found on the Isle of Lewis, Scotland, carved in the 12th century |
For teachers introducing chess as part of KS2 maths, history, or PSHE provision, LearningMole provides curriculum-aligned educational videos and resources that make complex ideas accessible to primary-aged children. Our resources connect abstract concepts — such as exponential growth in the context of the Shannon Number — to the everyday mathematical thinking children are developing in Year 4, 5, and 6.
Chess lends itself to cross-curricular planning. A single lesson on the Lewis Chessmen can cover historical enquiry (KS2 History), map work showing trade routes (KS2 Geography), and discussion of medieval social hierarchy (PSHE). LearningMole’s history and geography video resources offer starting points for each of these threads, with explanations designed specifically for children aged 7 to 11.
Parents supporting home learning will find that chess is one of the few activities that develops logical reasoning, memory, and forward planning simultaneously. Research from the University of Memphis found that children who learn chess show measurable improvements in reading and maths performance over time. The game is equally accessible whether children are playing on a physical board, an app, or a browser-based platform.
Chess is widely believed to have originated in India during the Gupta Empire, around the sixth century AD. The earliest form of the game was called Chaturanga, designed as a simulation of military strategy using four divisions of an army: infantry, cavalry, elephants, and chariots. There is no single inventor on record — the game developed over time, with the rules we recognise today taking shape in Persia and later Europe. The aim was to practise strategic thinking and military planning without the cost of an actual battle.
The Shannon Number is a mathematical estimate of the number of possible unique chess games, calculated by Claude Shannon in 1950. The number is approximately 10¹²⁰ — a 1 followed by 120 zeros. This is vastly larger than the estimated number of atoms in the observable universe (roughly 10⁸⁰). The Shannon Number explains why chess has never been “solved” by computers: even the most powerful machines would need billions of years to analyse every possible sequence of moves.
The queen was not always the most powerful piece. In the original Persian and Arabic game, the equivalent piece was the “firzan” or “mantri” (vizier/counsellor), which could only move one square diagonally. The transformation into the all-powerful queen as we know her today happened in Europe around the 15th century, when the rules were modified to speed up the game. Many historians connect the change to the influence of powerful European queens of that era, including Isabella I of Castile, though this remains a theory rather than an established fact.
The Lewis Chessmen are 93 chess pieces carved from walrus ivory and whale tooth, discovered in 1831 on the Isle of Lewis in Scotland. They were made in Norway around the 12th century and are among the best-known medieval artefacts in Britain. Most of the pieces are held at the British Museum in London, with 11 at the National Museum of Scotland in Edinburgh. The Scottish Government and various campaign groups have long called for the Edinburgh pieces to be reunited with their counterparts, a debate that itself makes for a good classroom discussion about heritage and national identity.
Checkmate comes from the Persian phrase “shah mat”, meaning “the king is finished” or “the king is helpless”. It entered English via Arabic and Old French. In a game of chess, checkmate occurs when a player’s king is under direct attack (in check), and there is no legal move available to escape. At that point, the game ends immediately — the player in checkmate loses. Unlike many competitive games, chess has no tiebreaker or overtime; a checkmate is an absolute conclusion.
Yes. Chess is regularly used in UK primary schools as a tool for developing logical reasoning, concentration, and resilience. The Chess in Schools and Communities (CSC) organisation operates programmes across the UK that introduce the game to children from Year 2 upwards. Research consistently shows benefits in mathematical reasoning and reading performance among children who learn chess. The game aligns well with KS2 curriculum objectives in maths (pattern recognition, systematic thinking) and can support PSHE discussions about patience, learning from mistakes, and sportsmanship.
The longest recorded chess game was played between Ivan Nikolić and Goran Arsović in Belgrade in 1989. It lasted 269 moves and took over 20 hours to complete, ending in a draw. This prompted FIDE to introduce the 50-move rule more strictly, which allows a player to claim a draw if no capture or pawn move has been made in the last 50 moves. The Nikolić–Arsović game remains exceptional; most competitive games last between 30 and 90 moves.
Chess connects naturally to several areas of the UK National Curriculum. In KS2 maths, the Shannon Number and the coordinate system of the board (A1 to H8) link to large numbers, combinations, and position and direction. In KS2 history, the Lewis Chessmen and the game’s medieval European development tie into the study of ancient civilisations and Britain’s role in Europe. In PSHE and computing, chess teaches logical sequencing, forward planning, and the consequences of decisions. LearningMole’s curriculum-aligned resources can help teachers build cross-curricular chess units that address multiple learning objectives simultaneously.
Chess is far more than a board game. It is a 1,500-year-old conversation between civilisations, a mathematical puzzle with more possibilities than atoms in the universe, and a physical artefact of medieval Britain carved into walrus ivory by Norwegian craftsmen. Each of the five facts in this guide opens a door into a different area of the curriculum, and each one gives children a reason to pick up a chess piece and ask what it used to be called before it had that name.
For teachers and parents, the real value of chess in education is not in producing grandmasters. It is in the habits of mind the game builds: the willingness to think several steps ahead, the resilience to recover from a mistake, and the patience to consider an opponent’s perspective before making a move. These are transferable skills that show up in reading comprehension, mathematical reasoning, and social development long after the board has been packed away.
LearningMole, the UK educational platform founded by former primary school teacher Michelle Connolly, provides curriculum-aligned video resources and teaching materials that help teachers bring exactly this kind of cross-curricular thinking to life. Whether you are planning a chess unit for Year 5, looking for home learning activities that spark genuine curiosity, or simply trying to explain why the queen is the most powerful piece on the board, we hope this guide has given you the answers and a few new questions to take into your next lesson.
LearningMole provides free and subscription-based educational videos and resources aligned with the UK National Curriculum. Explore our teaching resources | About LearningMole
Leave a Reply