The test is performed at both 33 cm and 6 m. The patient is shown a flashlight or wall mounted target with 4 illuminated dots in a diamond configuration: 1 red on top, 2 green on the sides, and 1 white on the bottom. By convention, the red lens goes over the right eye. Place glasses or polarized Worth 4-dot glasses on the patient, ideally over habitual refractive correction, if indicated. This simple test can be performed even on verbal children. The winning player is the one with the most boxes.The Worth Four Light Test (Worth's Four Dot test, W4LT) is a clinical test assessing binocular vision, including diplopia, suppression, and anomalous retinal correspondence (ARC). Once every line on the grid has been drawn, both players count the number of boxes that they scored to calculate their points. After a point has been scored, the scoring player draws another line, and their turn only ends when they can’t finish off a box. If more than one box is created by a single line, that player scores 1 point for each box that they created. Whenever a player completes the fourth side of a square and encloses it, that player scores 1 point and colors the box in or writes their initials inside of it to mark it off as their box. To play, each player takes turns drawing a single line between two dots on the grid either horizontally or vertically. To set the game up, draw a grid of dots that is at least 4 dots long and 4 dots wide, although you can make the grid bigger if you'd like to make the game last longer. The aim of the game is to capture more boxes than your opponent by drawing lines on a grid. X Research source /web/20070825035216/cf./ilanpi/dots.htmlĭots and Boxes is a two-player game played with a pen and paper. If you're near the end and it's close, take them and keep moving. If the game is early on, sacrifice the boxes. If you must respond to this scenario as Red, you have two options - take the chain or leave the boxes for Blue later.Remember this only works if there is another option available that doesn't give up a chain - a two-sided box you can safely draw a line in after cutting the chain up.You give up the first chain, yes - but you also minimize the long-term damage. To do so, you give up a chain before you're forced to, but you do so in a way that cuts the chain into two separate chains - giving blue an even number of chains remaining and a new chance to win. However, if Blue has at least 1 more box then Red, she can still tie the game, and she can win if they're up 3 boxes or more. Continuing with the 5x5 example where Red goes first (and wants an odd number of chains), imagine there are three chains on the board, meaning Blue will lose. Sacrifice a chain to reset the count if you're pre-determined to lose. Note: A set of just two boxes is not considered a chain in this strategy.The second player wins if there are an odd number of chains. If there are an even number of dots (4x4 board, 6圆, etc.) then the first player wins if there is an even number of chains.The second player wins if there are an even number. If there have an odd number of total dots (5x5 board, 9x9, etc.) then the first player wins if there is an odd number of chains. How? You control the number of chains available on the board based on a simple mathematical rule: But there is a way to manipulate the game to ensure you win the very first chain, double-cross the rest of the time, and thus win the game. This is true - the winner of the first chain is usually the winner. If both players know the double-cross rule mentioned above, then it would seem like every game will come down to who wins the first chain, as they can then double-cross their opponent until they win. Force good opponents into giving you the first chain.
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