"3 left to right. These weighted digits are added together. The check digit is the integer between 0 and 9 that makes the sum a multiple of 10. For instance, for the item with ISMN beginning 979-0-060-11561: As 85 mod 10 = 5, the check digit is 10 - 5 = 5 and the full number is 979-0-060-11561-5. For another example, Robert Fripp's collection of Guitar Craft scores has the ISMN 979-0-9016791-7-7. Given first 12 digits 979-0-9016791-7, the ISMN algorithm evaluates which implies that the check digit is indeed 7 (because 123+7=130=13x10). International Standard Music Number The International Standard Music"
"a tree. An old name for a dartboard is ""butt""; the word comes from the French word ""but"", meaning ""target"". In particular, the Yorkshire and Manchester Log End boards differ from the standard board in that they have no triple, only double and bullseye, the Manchester board being of a smaller diameter, with a playing area of only 25 cm (9.84 in) across with double and bull areas measuring just 4 mm (0.157in.). The London Fives board is another variation. This has only 12 equal segments numbered 20, 5, 15, 10, 20, 5, 15, 10, 20, 5, 15, 10 with"
"been used throughout the years and in different geographical locations. Gamlin's layout was devised to penalise inaccuracy. Although this applies to most of the board, the left-hand side (near the 14 section) is preferred by beginners, for its concentration of larger numbers. Mathematically, removing the rotational symmetry by placing the ""20"" at the top, there are 19!, or 121,645,100,408,832,000 possible dartboards. Many different layouts would penalise a player more than the current setup; however, the current setup actually does the job rather efficiently. There have been several mathematical papers published that consider the ""optimal"" dartboard. Initially the missiles were simply"
"numbers on the board minus the bulls-eye, the numbers 15 through 20 and the bull's-eye, or random number selections. Like with most dart games, 3 darts are thrown each turn per player. If teams are used, turns alternate between opposing players, i.e. Team 1, Player 1 -> Team 2, Player 1 -> Team 1, Player 2 -> Team 2, Player 2, etc. Numbers can be closed in the standard fashion i.e. hitting a single 3 times, hitting a double and a single, hitting a triple, etc. A closing variation, when using only the numbers 1-20, is a single hit on"
"501 total, in the following way: This eliminates the chance of any dart being deflected by an already thrown dart into the wrong scoring area by throwing each dart at a different location on the board. It is only usually seen in exhibition matches, as in tournaments, players are inclined to aim for the triple 20, only switching to the triple 19 for a cover shot. Arguably the most difficult nine dart finish would be 180 (3xT20), 171 (3xT19), and 150 (3xBULL) – owing to the difficulty of getting all three darts in the bullseye: it is the smallest double"
"the end of the game. Six rounds of darts, the first five are scored at their value (missing the board is 30 points), while the sixth round is one dart that subtracts from the current total. Objective is to be the first team to reach a score of 150, with only 1-12 counting towards a player's score. Doubles and triples of 1-12 still count, though throws must single in and out. Scoring a bullseye (an ice breaker) will put everyone’s score back to zero. Only three ice breakers can be scored per game. Of the two professional organisations, the British"
"in 2016), and ""bullseye"" for £50 (from the points value of the bullseye on a darts board) . £5 is called a ""fiver"". A ""tenner"" is £10. A ""Darwin"" also refers to a £10 note, due to the image of Charles Darwin on the back. £20 is commonly referred to as a “score”. A ""pony"" equals £25. A ""bullseye"" is £50. £100 is commonly referred to as a ""ton"" e.g. £400 would be called 4 ton. Also, a ""century"" or a ""bill"" are also used as £100 (e.g. £300 would be three bills). A ""monkey"" is £500. £1,000 is commonly"
"man. Distance - the oche (line behind which the thrower must stand) should be 7 ft 9¼ inches (2.37 m) from the face of the board. If the face projects outward from the wall, due to the thickness of the board and/or a cabinet in which it is mounted, the oche must be moved back appropriately to maintain the required distance. The regulations came about due to the United Kingdom and the rest of the world playing at different lengths, with 7 ft 9¼ inches (2.37 m) being the compromised length. The standard dartboard is divided into 20 numbered sections,"
"is uncolored, the double ring is red, and the outermost triple ring is uncolored. The entire scoring area is bounded by a large out-of-bounds blue ring. The number sequence (20, 1, 18, 4, etc.) is the same as on an English dart board. An ""American"" board is mounted a few inches lower, and a few inches closer, than the more commonly seen ""English"" board. The center of the cork is from the floor. The distance is set at from the ""back"" of the dartboard. This would result in a distance of from the center of the cork to the throw"
"both the first two darts do not land in any of the 20 numbers). Since the first dart sets the number, players will sometimes shun shooting at the 20, since a small miss will result in either a 1 or a 5 being set as the number. Often two adjacent numbers with solid values, such as 11/14 and 10/15 are chosen by lower-skilled players, since a small miss there does not result is such a large penalty (if you miss the 14 you'll still land in the 11, etc.). The maximum score in an inning is 300 points (3 corks)."
"bounce off from hitting the steel. The scoring areas on an American Darts board are also laid out differently from an English board. The center bullseye (or cork) on an American board is one section; there is no ""inner"" and ""outer"" bullseye. Additionally, unlike the English board, the treble ring is not halfway between the outer edge and the bullseye; rather triple is itself on the outer edge, and the double ring is directly adjacent to it, just inside the triple ring. The remainder of the board is the single scoring area. The bullseye is colored red, the single area"
"15 puzzle The 15-puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and many others) is a sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing. The puzzle also exists in other sizes, particularly the smaller 8-puzzle. If the size is 3×3 tiles, the puzzle is called the 8-puzzle or 9-puzzle, and if 4×4 tiles, the puzzle is called the 15-puzzle or 16-puzzle named, respectively, for the number of tiles and the number of spaces. The object of the puzzle is to place the tiles in order by"
"target count as two marks in one throw, and on the triples ring as three. Once opened in this manner, until the opponent ""closes"" that number with three marks on it of their own, each additional hit by the owner/opener scores points equal to the number of the target (which may also be doubled and tripled, e.g. a triple-20 is worth 60 points). The outer bullseye counts as 25 points, and the inner as 50. Dartball is a darts game based on the sport of baseball. It is played on a diamond shaped board and has similar scoring to baseball."
"8. Bb5+ Kf8! Black exchanges off his , but does not allow White to do the same. 9. Bxg5 Qxg5 10. h4 Qe7 11. Be2 h5 12. a4 g6 13. g3 Kg7 14. 0-0 Nh6 15. Nd1 Nd7 16. Ne3 Rhf8 17. a5 f5 18. exf5 e4! 19. Qg2 Nxf5 20. Nxf5+ Rxf5 21. a6 b6 22. g4? hxg4 23. Bxg4 Rf4 24. Rae1 Ne5! 25. Rxe4 Rxe4 26. Qxe4 Qxh4 27. Bf3 Rf8!! 28. Bh1 28.Qxh4? Nxf3+ and 29...Nxh4 leaves Black a piece ahead. 28... Ng4 29. Qg2 (first diagram) Rf3!! 30. c4 Kh6!! (second diagram) Now all of"
"""zuboshi"". In darts it is 5 foot 8 inches (1.73m) above the floor. Before the start of a match players usually throw closest to the bull to decide who has the advantage of throwing first. An inner bullseye (sometimes referred to as a ""double bullseye"" in amateur play) is a smaller, inner circle and counts for 50 points while an outer bull is worth 25 points. Two treble 20s when combined with an inner bullseye is worth 170 points in darts which is the second highest possible checkout. In the World Grand Prix, which has a double start format, an"
"diagonally. All references to squares refer to the dark squares only. The main differences from English draughts are: the size of the board (10×10), pieces can also capture backward (not only forward), the long-range moving and capturing capability of kings known as flying, and the requirement that the maximum number of men be captured whenever a player has capturing options. These are extra rules accommodated in some tournaments and may vary: Each of the fifty dark squares has a number (1 through 50). Number 46 is at the left corner seen from the player with the light pieces. Number 5"
"dart, and 40 is a much more desirable score than 2, due to the effects of missing. A common miss when aiming at the double ring is to hit a single instead and accidentally halve one's score. Given a score of 22 — a singly even number — one has a game shot for double 11. If one hits single 11, the new score is 11, which is odd, and it will take at least two further darts to recover. By contrast, when shooting for double 12, one may make the same mistake but still have 3 game shots in"
"A speculative piece sacrifice. Either 5...Ne7 or 5...Nb8 leads to equal play. 6.dxc6 Bxf2+ 6...Nxf2 7.Qd5 is strong for White. 7.Ke2 d5!? Not mentioned in ""MCO-15"", which gives only 7...bxc6. ""MCO-15"" and Tartakower and du Mont agree that in that event 8.Qa4 f5 9.Nbd2 leaves Black with inadequate compensation for the sacrificed piece. 8.cxb7 Bxb7 9.Qa4+ c6 10.Nbd2 f5 11.Nxe4 fxe4 12.Kxf2 0-0 13.Be3 gxf3 14.g3 After 14.gxf3 e4, ""White's troubles are only beginning"". 14...Qc8 15.Bc5 Rf6 16.Rd1 a5 17.Rd2 Ba6 18.Bxa6 Qxa6 19.Re1 e4 20.a3 The immediate 20.b4 would leave White ""better able to weather the storm"". 20...Qc8 21.Kg1"
"barrel of another scores no points at all. It is considered the same as if it missed the board. One notable etiquette difference from traditional ""English"" style darts is that in American Darts, each player leaves the thrown darts in the board for the next player, rather than retrieving them. This is done for several practical reasons: The standard game is Baseball (also known as ""1 to 9""). Players take turns shooting three darts at each inning. They begin with inning number one and continue in order until they have shot nine innings. Darts landing in the thin uncolored outermost"
"standard ""Scrabble"" in ""Super Scrabble"" are summarized by the latter's tagline, ""More spaces, more tiles, more points—add to your fun!"" The board is larger; (21×21 or 441 squares vs. 15×15 or 225 squares); there are more premium squares (going up to quadruple letter and word score spaces); there are 200 tiles, twice as many as a normal ""Scrabble"" set. The middle 15×15 squares are identical to a ""Scrabble"" board, so standard ""Scrabble"" may be played on a ""Super Scrabble"" board. All the high-scoring quadruple premiums lie near the outside of the board, with the quadruple word squares at the four"
"Checkerboard A checkerboard (American English) or chequerboard (British English; see spelling differences) is a board of chequered pattern on which draughts (checkers) is played. Most commonly, it consists of 64 squares (8×8) of alternating dark and light color, often black and white. An 8×8 checkerboard is used to play many other games, including chess, whereby it is known as a chessboard. Other rectangular square-tiled boards are also often called checkerboards. Given a matrix with formula_1 rows and formula_2 columns, a function formula_3, formula_4 returns true if the cell is white and false if the cell is black. The element formula_5"
"the start of their go could miss the double 10 and get a single, miss the double 5 and get a single, leaving them 5 and only one dart remaining. Their best option is to deliberately bust it to get back onto double 10. Under the ""northern bust"" they would remain on 5. A darts match is played over a fixed number of games, known as legs. A match may be divided into sets, with each set being contested as over a fixed number of legs. Although playing straight down from 501 is standard in darts, sometimes a double must"
"produced, but usually only in black & white. A variant of traditional darts played using a blindfold. Often played by people with visual disabilities. Typically a talking electronic dartboard is used to speak the numbers hit, keep score and announce who is throwing next. Cricket is a widely played darts game involving a race to control and score on numbers between 20 and 15 and the bullseye, by hitting each of these targets for three marks to ""open"" or ""own"" it for scoring. A hit on the target counts as one mark, while hits in the doubles ring of the"
"the left of the bullseye at σ = 100. Where σ may refer to the standard deviation for a specific population: List of darts players. There are many games that can be played on a dartboard, but the term ""darts"" generally refers to a game in which one player at a time throws three darts per visit to the board. The throwing player must stand so that no portion of his/her feet extends past the leading edge of the oche, but may stand on any other portion and/or lean forward over it if desired. The most common objective is to"
"pawn. At the end, Fischer's pieces coordinate to checkmate, while Byrne's queen sits useless on the other side of the board. White: Donald Byrne Black: Bobby Fischer Opening: Grünfeld Defence (""ECO"" D92) 1. Nf3 1... Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 0-0 5. Bf4 d5 6. Qb3 6... dxc4 7. Qxc4 c6 8. e4 Nbd7 9. Rd1 Nb6 10. Qc5 10... Bg4 11. Bg5 11... Na4 12. Qa3 Nxc3 13. bxc3 Nxe4 14. Bxe7 Qb6 15. Bc4 15... Nxc3! 16. Bc5 Rfe8+ 17. Kf1 17... Be6!! 18. Bxb6? 18... Bxc4+ 19. Kg1 Ne2+ 20. Kf1 Nxd4+ 21."
"five minus the fifth harmonic number. Every solvable configuration of the Fifteen puzzle can be solved in no more than 43 multi-tile moves (i.e. when moving two or three tiles at once is counted as one move). In auto racing: Forty-three is: 43 (number) 43 (forty-three) is the natural number following 42 and preceding 44. Forty-three is the 14th smallest prime number. The previous is forty-one, with which it comprises a twin prime, and the next is forty-seven. 43 is the smallest prime that is not a Chen prime. It is also the third Wagstaff prime. 43 is the fourth"
"formula_8<br> formula_9<br> formula_10<br> formula_11<br> formula_12 Double or Quits Double or Quits is a solitaire card game using a deck of 52 playing cards. The game is so called because the cards are built in a pattern where the value doubles and decreases by 13 if necessary. The game starts with eight cards dealt in a 3x3 grid with a hollow center. The middle card of the bottom row becomes the foundation and all other cards form the reserve. The illustration below shows the layout: The foundation is built regardless of suit using a sequence in which the value doubles: A-2-4-8-3-6-Q-J-9-5-10-7-A-2,"
"Nf6 7. Bg5?! 7... Be7 8. Qe2?! (see diagram) 8... d5 9. Bxf6? 9... Bxf6 10. Bb3 0-0 11. 0-0 a5 12. exd5 cxd5 13. Rd1 d4 14. c4?! (see diagram) 14... Qb6 15. Bc2 Bb7 16. Nd2 Rae8! (see diagram) 17. Ne4 Bd8 18. c5 Qc6 19. f3 19... Be7 20. Rac1 f5! (see diagram) 21. Qc4+ Kh8! 22. Ba4 Qh6 23. Bxe8?! 23... fxe4! (see diagram) 24. c6 exf3! 25. Rc2 25... Qe3+?! (see diagram) 26. Kh1?? 26... Bc8 27. Bd7 27... f2 (see diagram) 28. Rf1 28... d3 29. Rc3 Bxd7 30. cxd7 e4 31. Qc8 Bd8"
"Wickets) or bullseye (4 wickets). The beauty of the game is that once a player loses four wickets, they must throw one of their three darts with their non darts hand, losing six wickets means 2 darts with weak hand, and when 8 wickets are down all three must be thrown with the weak arm. This creates a real tension in run chases and can make for unbelievably tense finishes. Cricket (darts) Cricket is a darts game that uses the standard 20 number dartboard with the triple and double rings. It is known by various names in Britain, including ""Mickey"
"Dart golf is a darts game based on the sport of golf and is regulated by the World Dolf Federation (WDFF). It is played on both special golf dartboards and traditional dartboards. Scoring is similar to golf. This is a regional variant still played in some parts of the East End of London. The board has fewer, larger segments, all numbered either 5, 10, 15 or 20. Players play down from 505 rather than 501, and stand the farthest () away from the board of any mainstream variation. “Halve it” is a darts game popular in the United Kingdom and"
"scoring from 1 to 20 points, by wires running from the small central circle to the outer circular wire. Circular wires within the outer wire subdivide each section into single, double and triple areas. The dartboard featured on the ""Indoor League"" television show of the 1970s did not feature a triple section, and according to host Fred Trueman during the first episode, this is the traditional Yorkshire board. Various games can be played (and still are played informally) using the standard dartboard. However, in the official game, any dart landing inside the outer wire scores as follows: The highest score"
"The numerals 6 and 9, which are reciprocally symmetric through rotation, are distinguished with a dot or underline. Dice are often sold in sets, matching in color, of six different shapes. Five of the dice are shaped like the Platonic solids, whose faces are regular polygons. Aside from the cube, the other four Platonic solids have 4, 8, 12, and 20 faces, allowing for those number ranges to be generated. The only other common non-cubical die is the 10-sided die, a pentagonal trapezohedron die, whose faces are ten kites, each with two different edge lengths, three different angles, and two"
"full rules"" The game almost exactly follows the rules of the classic 501 darts game. Two professionals (one or two controlled by the player) throw darts onto the dartboard to decrease their score to 0, but they must end with a double. The only exception is the World Grand Prix where players must also start with a double. The dartboard's numbers are positioned just as they are in real darts. Each player throws 3 darts at a time before the next player takes his turn. In standard rules, whoever reaches 0 first has won the leg. Varying amounts of legs"