mathematics

Sissa (mythical brahmin)

Sissa (mythical brahmin) is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sissa (mythical brahmin) rather than just read about it. In short: The ancient Brahmin mathematician Sissa (also spelt Sessa or Sassa and also known as Sissa ibn Dahir or Lahur Sessa) is a mythical character from the village of Lahur, known for the invention of chaturanga, the predecessor of chess, and the wheat and chessboard problem he presented to the king when he was asked what reward he wanted for that invention. Legend Sissa, a Hindu Brahmin (in some legends from the village…

Key takeaways

Sissa (mythical brahmin) belongs to mathematics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sissa (mythical brahmin) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sissa (mythical brahmin) from memory before moving on to harder problems.

Reference excerpt

The ancient Brahmin mathematician Sissa (also spelt Sessa or Sassa and also known as Sissa ibn Dahir or Lahur Sessa) is a mythical character from the village of Lahur, known for the invention of chaturanga, the predecessor of chess, and the wheat and chessboard problem he presented to the king when he was asked what reward he wanted for that invention.

Legend Sissa, a Hindu Brahmin (in some legends from the village of Lahur), invents chess for an Indian king (named as Balhait, Shahram or Ladava in different legends, with "Taligana" sometimes named as the supposed kingdom he ruled in northern India) for educational purposes. In gratitude, the king asks Sissa how he wants to be rewarded. Sissa wishes to receive an amount of grain which is the sum of one grain on the first square of the chess board, and which is then doubled on every following square. This request is now known as the wheat and chessboard problem, and forms the basis of various mathematical and philosophical questions.

Historicity Until the nineteenth century, the legend of Sissa was one of several theories about the origin of chess. Today it is mainly regarded as a myth because there is no clear picture of the origin of chaturanga (an ancient Indian chess game), and from which modern chess has developed. The context of the mythical Sissa is described in detail in A History of Chess. There are many variations and inconsistencies, and therefore little can be confirmed historically. Nevertheless, the legend of Sissa is placed by most sources in a Hindu kingdom between 400 and 600 AD, in an era after the invasion of Alexander the Great. The myth is also told from Persian and Islamic perspectives. However, the oldest known narrative believed to have been the basis for the legend of Sissa is from before the advent of Islam. It tells of Husiya, daughter of Balhait, a queen whose son is killed by a rebel, but of whom she does not initially hear the news. This news is subtly announced to her through the chess game that Sissa introduced to her.

Sources This article has been created by partial adoption from and translation of the Dutch Wikipedia Sissa (Mythische Brahmaan).

Worked examples

Example 1 — a first encounter with Sissa (mythical brahmin)

Start with the simplest possible case. Write down what Sissa (mythical brahmin) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sissa (mythical brahmin) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sissa (mythical brahmin) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sissa (mythical brahmin)

In research: Sissa (mythical brahmin) appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sissa (mythical brahmin) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sissa (mythical brahmin) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ancient Indian mathematicians, Brahmin, History of chess, so understanding it makes those chapters shorter.
In everyday life: Look for Sissa (mythical brahmin) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sissa (mythical brahmin) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sissa (mythical brahmin) means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sissa (mythical brahmin) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sissa (mythical brahmin) in simple terms?

Why does Sissa (mythical brahmin) matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sissa (mythical brahmin)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sissa (mythical brahmin).