How To: Beat a rook with a queen in chess endgames
Watch as Grandmaster Alexandra Kosteniuk teaches you how to play chess in this chess video tutorial. This will show you how to use a winning strategy in Queen vs Rook endgames.
Watch as Grandmaster Alexandra Kosteniuk teaches you how to play chess in this chess video tutorial. This will show you how to use a winning strategy in Queen vs Rook endgames.
PAT MONAGHAN is a professor at DePaul University in Chicago. She holds a Ph.D. in both literature and science. She is the author of "Dancing with Chaos," a book that expresses the complex ideas of chaos theory in poetry. The THEOSOPHICAL SOCIETY in America is a branch of a world fellowship and membership organization dedicated to promoting the unity of humanity and encouraging the study of religion, philosophy and science so that we may better understand ourselves and our relationships within...
The best physics lecturer, Walter Lewin, makes another wonderful physics demonstration after having read a lecture on batteries.
Lyme is a growing threat as we move into warmer weather in the US. Researchers have said this year could be one of the worst for this tick-borne disease, as a skyrocketing mouse population and warmer temperatures increase the risk.
A Steampunk's Guide to Sex was the subject of a recent successful Kickstarter campaign, and I now hold the finished book in my hands. As such, I can say (mostly) unreservedly that you should buy this book. Allow me to tell you why, before I get into the nitty-gritty about the book itself. Sex is something of an odd topic in America because it's perfectly legal, and yet taboo. Unlike things that are illegal and not taboo, like drug use, murder, theft, etc. What this means is that children can ...
Every year the fine folks at Row Three do a post-TIFF mega-wrap up, collecting the micro-blurbs of a bunch of attendees into a giant meta-analysis of what everyone liked, loved, hated, etc. etc.. We'll link to that post when it goes up on the weekend, but in the mean time, here's my contribution:
Feeling lost inside a library? The Dewey Decimal System is a logical and popular book classification system for libraries and schools helping you to easily locate any book or periodical you need. Fool these steps to better understand the Dewey Decimal System.
Not everything at the dollar store is a bargain, or even safe to use. Learn to spot the difference between an item that's cheap, and a cheap item.
In this free video math tutorial, we learn how to use the Z-Score formula to find a data point (Xi) in statistics. With mathematics, as with anything else, not everyone progresses at the same rate. Stats is no exception. Happily, in the age of Internet video tutorials, this isn't a problem. Those who progress quickly can go beyond what's being taught them and those who are struggling likewise have all the time in the world to catch up. Whether you need help finishing your homework or studying...
If you're studying for your SATs or cramming for finals in college then dry shampoo is more than just a helpful tool; it's nearly indispensible if you want to look alive (rather than like you only got 1 hour of sleep). This is, of course, especially useful if you've got work immediately after a finals exam and can't look like a famished hobo.
Could you use a little help figuring out how to sum and subtract fractions? Watch this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this free math tutorial, you'll learn how to add and find the difference between fractions.
Looking for a primer on how to solve a standard-form linear equation in algebra? Learn how with this free video lesson, which offers examples of how to use the x and y intercepts of a line to write the equation of the line in standard form. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework o...
This is a video in which drawing artist Wayne Tully demonstrates an easy and simple method of drawing a dragon's wing. Wayne points out that the dragon's wing is identical in shape to a bat's wing and advises the viewer to study some pictures of bat's wings. This helps one get a good idea about what a dragon's wing should look like. Shading the inside parts of bone structure of the wing improves the quality of the drawing and gives it a realistic feel.
Remember when you were a kid and you would play fortune teller games in study hall? We all do! Check out this tutorial and learn how to fold an origami fortune teller. Whether you are using it to fool around during class as a teen, or in the office as an adult, people never get bored of this great bit of nostalgia. All you need is a piece of paper and a pen to mark your corners and you are on your way to telling the future!
In this how to draw video the artist shows us how to draw an anime face in profile. The artist explains to she doesn't use guidelines to draw the profile, though some people do. She tells us that she used to have a very hard time drawing profiles at first, but practiced a lot and studied profiles so that she was able to get better at it. She says that with hair she likes to draw loosely and lightly. While she talks she continues to draw and demonstrates as she explains. She suggest practicing...
"Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, to share links, to share photos and videos of themselves and their friends, and to learn more about the people they meet." -- Facebook
Dive into the world of Chinese brush painting, a traditional art where each brush stroke of the painting is neither improved upon nor corrected. The artist must get it right from first to last stroke!
Looking for a satisfying snack you can whip up in minutes? Try this recipe for delicious beer-batter onion rings. Explore the sizzling relationship between America's most popular grown-up beverage and an everyday vegetable. Let's make some beer-batter onion rings. If you're having trouble parting with a can of the good stuff for this recipe, consider this: A New Zealand study found that adding beer to batter helps reduce the oily fat content of fried food by as much as 40 percent. Yep, that's...
The OnePlus 7 Pro comes with a new Zen Mode feature to help increase your concentration and reduce distractions. It takes things a step further than Google's Digital Wellbeing by disabling your device and stopping sounds. But even if you don't have a OnePlus, you can now get this distraction-free feature on any phone.
So cute, so furry, and so chock full of parasites. While raccoons are fun to watch, they are neither friendly nor clean — and they can make you sick in more ways than one.
Infections with group A streptococcus, like Streptococcus pyogenes, claim over a half million lives a year globally, with about 163,000 due to invasive strep infections, like flesh-eating necrotizing fasciitis and streptococcal toxic shock syndrome.
We might think of Zika as a mosquito-borne virus that effects developing fetuses, but, it also can be passed through sex by either a man or a woman, just like herpes and other STD viruses. New research has shown that vaginal bacteria can inhibit sexually transmitted Zika virus and Herpes Simplex Virus-2 in women.
While some researchers look for drugs to treat HIV, other scientists delve deep into the virus itself for answers on how it causes infections.
As our cells age, they eventually mature and die. As they die, they alert nearby cells to grow and multiply to replace them. Using a special imaging process that combines video and microscopy, scientists have observed the cellular communication between dying and neighboring cells for the first time, and think they may be able to use their new-found information against cancer cells, whose damaged genomes let them escape the normal dying process.
Windborne microbes shifting in the snows of the great ice sheet of Greenland may be able to neutralize some of the industrial contaminants oozing out of the melting ice.
If the all the fingerlike projections in our gut were flattened out, its surface area would be 100 times bigger than our skin's. It's so large that the actions of just a small part of it can impact our health. A new research study has found that enterochromaffin cells in the intestinal lining alert the nervous system to signs of trouble in the gut — trouble that ranges from bacterial products to inflammatory food molecules.
Streptococcus and staphylococcus bacteria produce toxins that can cause toxic shock syndrome.
Yogurt is more than an excellent source of protein, calcium, and gut-healthy probiotic bacteria. A protein isolated from probiotic lactobacillus bacteria in yogurt is capable of inhibiting drug-resistant bacteria.
Bed bugs are brown and creepy. Could you spot one in your hotel room? A new study reveals most people are freaked out by bed bugs, but only about 35% could identify one.
The body's usual response to a bacterial infection in the blood — called sepsis — takes time. It requires a carefully orchestrated sequence of events that gets the body's immune system ramped up to deal with the invading bacteria.
It's not the bacteria itself that takes lives and limbs during invasive flesh-eating bacteria infections. It's the toxins secreted by the group A Streptococcus bacteria invading the body that causes the most damage.
Electrical impulses course through our heart and keep it beating. That's why a jolt from an automated external defibrillator can boost it back into action if the beating stops. But new research says there may be more to keeping a heart beating than just electrical impulses.
Usually, the mucus lining of the female genital tract presents a barrier that helps prevent infections. But, somehow, the bacteria that causes gonorrhea gets around and through that barrier to invade the female genital tract.
A sometimes serious disease spread by fleas is making inroads in Texas, quietly doubling case numbers since 2008, and beginning to encroach on larger metropolitan areas.
A recent study underscores a connection between climate change and infectious disease, raising concerns about our quickly warming planet.
There are all kinds of theories—many supported by science—about what causes Alzheimer's disease. Tangles of protein called ß-amyloid (pronounced beta amyloid) plaques are prominently on the list of possible causes or, at least, contributors. An emerging theory of the disease suggests that those plaques aren't the problem, but are actually our brains' defenders. They show up to help fight an infection, and decades later, they become the problem.
Our brains do a magnificent amount of work to process visual stimuli, but they aren't difficult to fool. Optical illusions can trick our minds into believing what we're seeing is real, even if it's not—and virtual and mixed reality technologies take advantage of this little loophole in our brain to help us accept the unreal.
Nice people finish first—or is it last? Though you may have been told throughout your life that being kind pays off, there are some obvious advantages to getting mean. So whether you're driving towards a goal at work, or need to attack a task in your personal life, acting like a jerk just might help you get what you want.
It's a rare person who enjoys swallowing pills—and equally rare to find those who can toss a pill back easily and effortlessly without gulps of water and coughs. The transition from liquid medicine to pills, tablets, and capsules can be a rough one, and some of us still struggle well into our adult lives. Yet the reason your pills are getting caught in your throat may not be the medication's fault—it's all in how you swallow.
Eye contact is key in conversations, job interviews, and honesty, and it can help you access others' thoughts and spot heavy drinkers. Locking eyes with someone can even help you fall in love, whether you know them or not.