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describe chess moves. The most basic rule applies when the pawn can queen unassisted by its king. The rule of the square determines if this is possible. In...

specify a "Secret Square" rule, but this was later revised so that every question card with a number ending in "5" was a "Secret Square" question worth...

electorates." A mathematical formulation of this idea results in the square root rule. The Penrose method is not currently being used for any notable decision-making...

root of 1/2). When the illuminant is not a point source, the inverse square rule is often still a useful approximation; when the size of the light source...

the two numbers can be read. More elaborate slide rules can perform other calculations, such as square roots, exponentials, logarithms, and trigonometric...

heads that can be attached to the rule. Other names for the tool include adjustable square, combo square, and sliding square. The most common head is the standard...

location. Pawns have the most complex rules of movement: A pawn moves straight forward one square, if that square is vacant. If it has not yet moved, a...

The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity) states that for many outcomes, roughly...

far back as the 1950s, but the rules are not explained. A 1953 teacher's manual describes four square with the same rules used today. However, it is possible...

The Tiananmen Square protests, known in China as the June Fourth Incident, were student-led demonstrations held in Tiananmen Square, Beijing, China, lasting...

GIF images. It supports 16:9, 4:3, and 3:2 aspect ratios and offers square, rule of thirds, golden ratio, and crosshairs alignment frames, which are disabled...

In calculus, the chain rule is a formula that expresses the derivative of the composition of two differentiable functions f and g in terms of the derivatives...

Australian rules football were first defined by the Melbourne Football Club in 1859 and have been amended over the years as Australian rules football evolved...

corresponds to a factor close to the square root of 2, thus the above rule. An elaborated form of the sunny 16 rule is to set shutter speed nearest to the...

In calculus, the product rule (or Leibniz rule or Leibniz product rule) is a formula used to find the derivatives of products of two or more functions...

_{i}\rangle } , it is common to describe the Born rule as saying that probability is equal to the amplitude-squared (really the amplitude times its own complex...

made an initial two-square advance. This is an exception or special case in the rules of chess. The capturing pawn moves to the square that the enemy pawn...

A Lesbian rule was historically a flexible mason's rule made of lead that could be bent to the curves of a molding, and used to measure or reproduce irregular...

magic square works. Another possible 4×4 magic square, which is also pan-diagonal as well as most-perfect, is constructed below using the same rule. However...

{n}}\rceil \,} which takes the square root of the number of data points in the sample and rounds to the next integer. This rule is suggested by a number of...