Abstract: The present invention discloses a game for helping children to learn the alphabet. The game includes multiple game boards 10 with 9-3 letter words 15 thereon presented in a 3×3 matrix which game boards are given to each player. A designated player reads a vocabulary card 60 from a deck of randomly shuffled cards 60 which contain the three-letter words 15 shown on the game boards 10. If a player's game board 10 contains the word 15 read form the vocabulary card 60, the player places a token 80 over that word. The first player to get three tokens 80 in a row, either vertically, horizontally, or diagonally, wins the game.

Abstract: A collection of playing pieces for a vocabulary word game is disclosed. The pieces contain on one face a multi-letter combination of at least two letters plus a designator indicating required location of the letter combination in words. During a playing interval one playing piece is displayed to all players. Each player writes a list of words containing the selected letter combination at the designated location in the words. After a predetermined time limit the players reveal their list to all. The winner of the playing interval is the player with the greatest number of words on their list. The game continues for a chosen number of intervals, the game winner being the player winning the greatest number of individual playing intervals.

Abstract: A hidden image game piece and a method by which a hidden image game piece is produced and used. A first hidden image game piece is formed on a transparent or translucent substrate. A second hidden image game piece is formed electronically, and optionally printed or, alternatively, saved and distributed in electronic format. The hidden image game piece can be used to distributed either physically or electronically, and it may be used to derive demographic information from recipients, to drive them to web sites or retail outlets, and to provide a means for distributing advertising, either on the game pieces or at a game site, which may be a physical site, such as a retail outlet, or an electronic site, such as an Internet site. The methods of the present invention include the method of producing a game piece, the method of deriving demographic information from recipients of the game pieces, and the method of providing advertising to recipients of the game pieces.

Abstract: Apparatus for playing a game and comprising: a board having a grid of squares marked thereon, a set of player tokens which are allocated to respective players for placing on said grid; a set of markers each having a letter marked thereon and being arranged such that each may be placed on a corresponding square of said grid; a set of game cards each having a multiplicity of squares marked thereon, whereby in use selected markers can be removed from the grid by players and placed on squares of the game cards to construct words or phrases; and a set of question cards each having marked thereon a question. Each player throws a die to determine how far he can move his token across the board. Providing that the player can correctly answer a question read to him from a selected question card, he can remove a letter from the square on which he landed and use it to construct a word or phrase on his game card.

Abstract: A numerical problem solving game including a set of questions and a scrambled letter puzzle grid. Each of the questions calls for a numerical answer. The puzzle grids comprise a plurality of letters which spell out verbal representations of the numerical answers. Each of the jumbled letter grids corresponds directly with the single set of numerical questions whereby numerical answers for the single set of mathematical questions can be found in verbal form within the single jumbled letter grid.

Abstract: The present invention generally involves a computer program for creating, printing, storing, organizing, solving and publicizing double crostic puzzles and playing a solitaire game based upon the double crostic puzzle theme. The computer program allows a user to create or solve double crostic puzzles with minimal effort because the computer program accomplishes the “book keeping” and layout requirements of a double crostic puzzle. In addition, the computer program may be used as a solitaire game wherein the user attempts to create a puzzle from a preselected letter bank.

Abstract: A game in which each player randomly draws playing tiles, either blank or letter displaying, from a receptacle and constructs words with them, positioning them on her personal viewing area, with play transferring from player to player. At the end of her turn, each player enters her score and replenishes her playing tiles. Players can remove (“steal”) other players' playing tiles to construct at least one new word by adding at least one additional playing tile at her own personal viewing area. Play continues until the end of the game determined when all of the playing tiles have been removed and when none of the players can any longer construct a word with the playing tiles at the personal viewing areas. A basic score is achieved by placing a value of one on each tile used in a new word plus each tile reused to reveal additional words within that new word.

Abstract: The present invention is directed to an apparatus for use in playing a word game, in particular a crossword game, and a method of playing such a game using the apparatus. In particular the invention is directed to an apparatus and game that is suitable for play by two or more players which includes means for indicating whether letter(s) nominated for a particular cell of the crossword by a player matches the at least one letter assigned to the cell.

Abstract: A word game and method of playing the word game. The word game has a plurality of letter indicator members, each having a letter indicia corresponding to a selected letter or choice of letter, each letter indicia being assigned a predetermined point value for use in calculating an initial score value of a word formed from a random selection of the letter indicia. The game further includes a plurality of score manipulation members, each having a scoring indicia for manipulating the initial score value and determining a final score of the word. The score manipulation members are arrangeable in a random order from one game to the next.

Abstract: A gaming machine comprises at least one visual display (mechanical or video) and a game of chance controlled by a processor in response to a wager. The game of chance includes a primary game and a sorting feature. The sorting feature is triggered by certain start-feature outcomes of the primary game. The sorting feature includes a collection of scrambled objects, such as letters, symbols, pictures, or puzzle pieces, that are at least partially sorted during operation of the sorting feature. The sorting feature generates an award, such as a payoff, a payoff multiplier, or extended play, if the sorted objects match predetermined criteria.

Abstract: An apparatus for collecting a game pieces such as tiles from a game board. The apparatus includes a cover sized to fit over the game board and a collection tray. The cover has a collection surface for collecting the game pieces and depending sides along its perimeter, one of which includes a cut-out portion with a lip flush with the collection surface. The raised edge of the tray is also flush with the collection surface of the cover. Players pass the games pieces on the collection surface through the opening and onto the tray for reuse or storage.

Abstract: A mathematical card and dice game comprising a deck of cards, a set of three dice, and a timing device, the deck of cards divided into four suits of fifteen cards each, ten of which are numbered one through ten, the remaining five non-numeric cards having letters which can take on any value as defined by the players prior to the game. A predetermined number of cards are dealt to players who use the values of the three dice rolled, common mathematical operations such as addition, subtraction, multiplication, and division, and their knowledge of math to make mathematical relationships that equate to the value of cards in their hands within a predetermined amount of time as tracked by a timing device. A successful match occurs when the card value equals the numeric result of a mathematical operation involving all three dice.

Abstract: A “Double Cross™” crossword puzzle game is a method of playing a game that allows players to compete to complete a crossword puzzle. The game includes a game board which is configured as a grid of squares with a video screen in the center of the board which can be used to display written or visual clues to help solve the crossword puzzle. The players alternate controlling the selection of clues; when they answer a clue correctly they continue to control the selection, and when they answer incorrectly the clue selection passes to the next player. The game also allows players, having selected a clue, to “double cross” an opponent by challenging that opponent to answer the clue, exposing that opponent to the danger of losing some or all of his accumulated points. The game also includes a final phase where the leading player, or all of the players, must solve a word puzzle consisting of only two interlocking words.

Abstract: A game device includes a plurality of user-selectable cells extending between start and finish areas, where each of the cells is associated with a character performing an answer to a question or clue that may be provided in the form of a category. One or more participants move from the start to the finish area by selecting cells whose characters when taken in order form a valid answer. A number of valid answers or paths between the start and finish areas can exist. The participant is scored at least in part based on the characters forming the valid answer.

Abstract: A word puzzle game is provided for entertainment and/or educational use. The game includes at least one word puzzle. The word puzzle answer includes a plurality of words or phrases that are sequentially adjacent in a reference listing of all words or phrases from a given category. The puzzle also includes a plurality of clues. The game includes at least one clue-hiding device to selectively hide and reveal the clues and the answer of the puzzle. The game may also include a game board to measure the progress of players.

Abstract: An integrated crossword and circle-a-word puzzle includes a number of open spaces defining an interlocking crossword region and a number of preprinted letters which replace the black squares present in traditional crossword puzzles. The crossword region includes a number of spaces defining at least one across word and one down word. The preprinted letters include a number of circle-a-word preprinted letters and circle-a-word camouflage letters. During the process of solving the puzzle, the circle-a-word words are circled. Circle-a-word words may have one or more circle-a-word preprinted letters and may have one or more circle-a-word spaces within the crossword region. In this circumstance, the letter added to the circle-a-word space adds to the solution of the crossword region. In a preferred version of the puzzle, a number of open spaces within the crossword region are defined by an indicator to be unscramble-a-word spaces.

Abstract: A word game includes providing a player with the number of letters in a mystery word, but not providing the mystery word itself. The player reveals or receives one or more game words and corresponding numbers of letters in each of the game words that are present in the mystery word. The player determines an answer word that the player believes to be the mystery word, and the answer word is compared to the mystery word. The player may win the game if the answer word is the same as the mystery word. The game may be played by one or more players, and may be played in a printed format or with game cards.

Abstract: A non-competitive memory enhancement game serves to stimulate the memories of persons suffering from memory loss due to Alzheimer's disease stroke, head injury, or other reasons. The present game includes a series of subject areas or categories, with each of the categories being further divided into general knowledge and individualized or personalized knowledge areas. A series of memory cards is provided corresponding to the various general knowledge subject areas, with a series of transparent envelopes also being provided for the insertion of pictures and related questions or comments therein for the construction of personalized memory cards for individual players. A game board or other suitable playing device is provided with a series of playing positions corresponding to the subject areas of the game. Movement about the playing surface during the game is determined by chance, e.g.

Abstract: A lottery ticket having a first game area with a grid of target letters arranged so that at least some of the letters form target words and a second game area having a list of preselected game words which are covered by a scratch-off layer. The game words are matched with the target words to determine if a prize has been won. An enhanced play action in the form of at least one third game area may be provided.

Abstract: A word-forming card game that does not feature points comprising a deck of cards marked with letters of the alphabet and method of play. Players are dealt seven cards which they hold “hand” style and keep private throughout game. Each player, in turn, has the opportunity to change the cards in his or her hand by picking a new card from a discard pile or the undealt stack of cards. If player keeps such new card he or she tosses a card from existing hand to discard pile in order to maintain a seven-card hand throughout the game. Players try to develop a hand in which every letter is either a word itself or part of a word. A seven-letter word wins and all other hands that use up all letters in combination of complete words are ranked based on longest word or words.

Abstract: The present invention is a game which merges two previous game formats into a unique and novel game comprising a game board and playing pieces for each player to mark the movement of the players as the players advance around the game board. During each turn, the player must answer a question and construct a list of words based upon the letters in the correct answer. The player accumulating a predetermined number of points is declared the winner.

Abstract: A math game for advancing a player's token across a playing surface by correctly answering math questions. The math game includes a playing surface with spaced apart starting and ending sides, and a plurality of playing spaces between the starting and ending sides of the playing surface. The plurality of playing spaces includes a starting playing space adjacent the starting side of the playing surface, an ending space adjacent the ending side of the playing surface, and a plurality of answer playing spaces each having a number displayed therein. A spinner is also provided with a top face having a plurality of spinner spaces each having a mathematical question displayed thereon. The mathematical question of each spinner space has a correct answer equal to the number displayed on a corresponding one of the answer playing spaces. The spinner also has a rotatably mounted pointer for randomly selecting one of the spinner spaces. Each player spins the spinner to designate an active spinner space.

Abstract: A board game set comprises a plurality of cubic game pieces which are having indicia on each face, a lattice-like game board having rows and columns of compartments which hold chosen game pieces for construction of either words, terms or phrases in either English or Chinese, mathematical or chemical expressions, etc., by the use of reflective display means in which all faces of game pieces placed are viewed in a glance. Each said reflective display means is provided for each player and is having two mirrors and a game piece orientation means for viewing the rear faces and bottom face of the game pieces.

Abstract: A board game bag is made of non-transparent flexible material and includes a main body and a mouth. An elastic member is disposed within the mouth, allowing the mouth to open when the elastic member is stretched and causing the mouth to partially close when the elastic member is allowed to relax. The board game bag is designed to hold game pieces to be drawn during game play. To this end, the board game bag is placed in a cylindrical plastic sleeve that provides support for the bag so that the bag is held upright as players draw game pieces from the bag. Following game play, all game pieces placed on the board are easily removed from the board by stretching the mouth of the bag over all four corners of the game board and flipping the board over, thus causing the game pieces to fall into the bag. The mouth of the bag is then removed from the four corners of the board and the elastic member causes the mouth of the bag to constrict.

Abstract: A board game including a recorder wherein the object of the game is to pronounce phrases backwards in an effort to have the pronunciation of the phrases sound correct when the tape is played backwards.

Abstract: An apparatus is provided that is a computer-processor-based word game in which the object is to transform a first word into a second word using the last two letters of the first word as the first two letters of the second word where the second word fits the definition given for that word. The more words correctly transformed, the greater the number of points awarded.

Abstract: A multiplication capturing and recapturing game system is disclosed. The system comprises 2 equilateral-triangular game boards, a pair of eight-sided dice and 36 playing pieces. The game can be played by 2 to 4 players. Each player throws two dice to begin a turn and captures or recaptures a location to end the turn. The player who finishes all 9 pieces first wins the game.

Abstract: A method of playing a game of numbers and colors. In this game method, a new higher level of player strategy is introduced by way of players privately possessing numbered and colored objects for the duration of the game, in contrast to existing mathematical or color game methods based on utilizing sets of cards or objects viewed by all players. The present invention includes a new method of simultaneously combining mathematical operations performed on both numbers and colors. The method of the game of numbers and colors is based on utilizing the mathematical operations of multiplication, division, addition, or subtraction of numbers, and is also based on application of linear combinations of at least two colors to produce another different color. Emphasis is on mathematical manipulation of prime and non-prime numbers. Colors used in the method of the game are not limited to any finite number.

Abstract: A word game is provided including at least one sheet of paper having a top face, a bottom face, and a periphery formed therebetween. The top face of each sheet has a plurality of unique horizontally oriented words printed thereon. A large blank space is situated between each word. Also included is a time keeper for providing an indication upon the cessation of a predetermined amount of time.

Abstract: A rhyming word game including a game board having a plurality of advancement zones which contain a plurality of advancement positions defining a movement path. At the base of each advancement zone is a start position. All advancement zones lead to a mutual finish position in the center of the game board. There are a number of game pieces which are positionable on each of the plurality of advancement positions for movement from the start position to the finish position. There are a number of playing cards which have a plurality of clues and a corresponding number of rhyming answers. The answers are definitions, interpretations, or associations of the clues. There also exists a timing apparatus used to limit the amount of time players have to respond with the correct rhyming answers to the given clues from the playing cards. The time varies according to the position of a player's game piece on the game board.

Abstract: A game apparatus utilizing a platform which is divided into a first section, having a first partition to define the same, a second section, having a second partition to define the same, and a third section having a third partition to define the same. The second partition and second section lie intermediate the first and third sections. A first set of game pieces are sized to fit in alignment with one another and in side-by-side configuration within the second section. The first set of game pieces also fit in a side-by-side relationship within the first section. A second set of game pieces of a different configuration than the first set of game pieces are sized to fit singly in the third section.

Abstract: An electronic word puzzle game, the game playable on a game computer having a processor for executing at least one program from associated memory, a display and an I/O interface, comprising: at least one puzzle phrase in the associated memory; a game program in the associated memory executable by the processor for randomly or determininistically choosing a solution phrase from the associated memory, the solution phrase comprising at least one of letters, spaces and punctuation marks; the I/O interface adapted for enabling the player to select at least one of letters, spaces and punctuation marks from a selection of entry keys associated with the I/O interface; the game computer generating and displaying a plurality of solution phrase constituent display areas, wherein each of said solution phrase constituent display areas corresponds to each letter, blank space, and punctuation mark of the solution phrase, on the display screen; the game program executable by the processor for comparing the at least one selec

Abstract: A mathematical game that can be played by two, three, or four players uses a fold-open playing board with a square marked playing surface. A number of spaced bonus squares radiate outwardly form a centrally positioned star. Player positions are marked along four edges of the playing board. Each player has a limited number of playing tiles drawn from a tile pool of 100. The tiles are approximately 3/4 inch by 3/4 inch square and 1/8 inch thick and are numbered one to zero on one side. A player draws eight tiles from the mixed tile pool number side down. Each tile is sized to fit over and cover one square on the game board playing surface. Tile positioning is started on the center star. Each player in his/her turn attempts to complete a mathematical equation using three or more of his/her tiles with tiles already on the board. Scoring is based on adding the tile numbers showing plus any double numbers on bonus squares. The equation is disregarded.

Abstract: The structure has a panel provided with a number of openings arranged in parallel rows and columns. Each opening may be opened and closed by a flap. A corner of each flap is removed so that a part of each opening remains open when the flap is closed. A completed crossword puzzle is held stationary beneath the upper panel. Each square of the puzzle displays either a letter or a blank. The square also displays in one of its corners an indication of what the remainder of the square displays whether a letter or a blank. Each square is visible through a respective opening when the flap which is closed by the opening is open and when the flap is closed the letter or blank within the square is hidden but the indication within the square is visible through the open part of the opening.

Abstract: Apparatus and method for playing an anagram-type game in a game show or computer game format. One or more anagrams, each comprised of scrambled letters, are displayed on a gameboard. At least one object of the game is to guess the unscrambled solution to each anagram. When correctly guessed, the letters are moved from their scrambled configuration to their unscrambled configuration. An ultimate solution to the puzzle is preferrably revealed by some of the letters of the collective unscrambled anagrams which are moved into a predetermined alignment. Several means are included for making it easier to view, study and follow the progress of the game such as moving each letter along a path, leaving outlines of the letters in their initial positions, and indicating which anagram is to be guessed by a player.

Abstract: An alphabet solitary game is provided including a game board having an upper surface with a row of vowel squares each having a unique alphabetic vowel character printed therein. Further provided is plurality of cards each having a single alphabetic character printed thereon. Prior to play, a card is placed within each of the vowel squares such that an alphabetic character of each card matches the alphabetic vowel character of the associated one of the vowel squares of the game board. Thereafter, a card is situated face up in a square matrix on the game board. During play, a single player takes turns during which the single player attempts to form a word with at least a predetermined amount of cards. Each turn may comprise the step of picking any of the vowel cards in the vowel squares and utilizing the vowel card in the word of the turn. Finally, the player is declared a winner upon the picking of all the cards in the square matrix.

Abstract: A word association game requiring players to match words that are listed on discs that are drawn from a bag is shown and described. The players are dealt subject cards which are then placed in a designated area on their game board. Each player tries to match as many of his discs with a particular category that is found on his board. After the initial round, action cards drawn by the players indicate further actions that the players must take. When a player has completed all of the spaces on his board, he declares his accomplishment to the other players and one half of the other players must agree with his disc associations in order for the player to be declared the winner.

Abstract: A board game is disclosed wherein a player must move a token through a plurality of playing fields and return to a starting position. Movement between playing fields is conditioned on the successful completion of a requirement such as correctly answering a question or collecting a plurality of tiles in a desired combination. The first player to pass through each of the playing fields and return to the starting position is declared the winner.

Abstract: This invention relates to a game and particularly, though not exclusively to a board game using a foreign language such as bahasa Indonesia, and a national language such as English. In one embodiment of the invention there is a board game comprising a game box (12) and a playing board (13, FIG. 2 ). The game box includes decks of key words/phrase cards (26), instruction/conversation starter cards (28), and conversation starter cards (24). Included is a set of playing markers used to move around the playing board. An advance wheel (32) is provided as a random number generating device for determining the number of spaces a player is to move around the board. The playing board has drawings/photographs together with instructions in the foreign language located in one or more spaces defining a first or second track (42), (44) respectively, positioned around the playing board.

Abstract: A chip for a crossword game having a transparent body and a letter and numerical value, marked on one face by hot stamping a foil having opposite faces of different colors so that players can readily perceive and identify whether they are looking at an outer face of the body on which the letter and numerical value are marked or at the underside of the letter and numerical value as viewed through the transparent body from the opposite face. This enables players to position chips on the racks correctly without need of further adjustment.

Abstract: A word puzzle game is disclosed. The word puzzle game comprises a rectangular word puzzle card having a matrix of grid spaces surrounding the outer periphery. The matrix of grid spaces frame and surround a display area, where a plurality of character letters which comprise a word are positioned for a player to decipher. Certain information which lends assistance to the player in deciphering the word contained within the display area is provided in the matrix of grid spaces. A game board having a series of progress spaces is supplied with the word puzzle card, and each player moves forward along a path of the progress spaces towards an ultimate winning position in relation to the number of times the player successfully deciphers the word encrypted within the display area.

Abstract: A three-dimensional word game which is characterized by a base having a grid with one or more squares, selected ones of which are fitted with openings or projections for receiving and anchoring correspondingly-shaped, lettered blocks to facilitate vertical stacking and horizontal extension of the blocks together and spelling words. In a preferred embodiment, the blocks (typically cubes) are designed to connect by such elements as round and truncated pegs, snap flanges, threaded posts and internally-threaded post seats, dovetail slots and tabs, as well as by magnetic attraction. The blocks are typically provided with letters of the alphabet located on at least one side, to facilitate selectively connecting or interlocking the blocks, both vertically and horizontally, to spell words during progression of the game.

Abstract: An enhanced playing chip for word games having two or more letters and corresponding number values thereon. The player selectively orients the playing chip to select one of the letters. Players are provided with removable and interchangeable labels to create user-defined enhanced playing chips. A combination of letters, numbers, colors and figures may be provided on the label to create a children's educational aid.

Abstract: The present invention is directed towards an educational game apparatus which requires the players to unscramble a given set of letters to form a word which matches or defines the given clue. Correct matches by a player translate into moves for the player's pieces around a game board and results in the eventual achievement of the game board objectives. The object of the game is for a player to mark off all the letters, numerals or other appropriate indicia on his/her score card, i.e.: a laminated strip in the shape of a bacon strip, by moving his/her game piece in either direction around the game board. The winner of the game is the first individual or team to completely mark off all the letters, numerals or other appropriate indicia on their score cards.

Abstract: The present invention comprises a board game for teaching basic arithmetic and mathematical operations to small children and others in need of such skills. The game board includes a continuous rectangular peripheral playing path having a series of playing positions therealong, with each of the positions requiring a player to accept or pay out an amount of simulated currency. The goal is for a player to reach a predetermined monetary total, whereupon the player may purchase an imaginary "dream trip" with the accrued money. For very young persons beginning to learn basic addition and subtraction, this first level of the game may be sufficient. However, the present game also provides higher levels, in which players are required to perform some higher mathematical operation using a random number generation device (dice, etc.) to provide the numbers to be manipulated mathematically, before being able to advance along the playing path.

Abstract: The present invention is a word forming game which has a letter selection based on words used commonly in conversation. The word game of the present invention may include: one six-sided die; a game board having four player areas, each area numbered one through six to correspond to the numbers on the die; thirty-one letter tiles imprinted with commonly used letters on both sides of the tile; and a score card. According to a method of playing the game of a preferred embodiment, four players place letter tiles next to each number located in the player areas. By rolls of the die, each player selects four of the letters and attempts to form a word. Each player is given preferably eight rounds in which to form words. At the end of the game, the player may receive a bonus score for forming a sentence from the words formed during the game. Generally, each letter used to form a word counts one point. The scorecard is used to record the letters, words and the points.

Abstract: A game device includes a plurality of game blocks, at least two playing cards, and at least two hollow game boxes. The game blocks are grouped into at least three sets by shapes and sizes so that each of the game blocks belonging to a particular set has a cross section different from those of the game blocks belonging to the other sets. Each set is further grouped into at least two subsets by a predetermined printed matter thereon. Each of the playing cards has at least three rows and at least two columns of patterns. Each pattern is a combination of the cross section of the set and at least one print of the subset. Each of the game boxes includes an upright front wall formed with an elongated slot to permit insertion of a selected one of the playing cards thereinto, and an upper game board which defines at least three rows and at least two columns of openings respectively corresponding to in cross section and superimposed upon the patterns of the playing card.

Abstract: A method of playing a game that has a puzzle and a conforming device. The puzzle includes ciphertext indicia and a number of designated spaces corresponding with the ciphertext for displaying a developing solution. The ciphertext is a message encrypted according to some substitutional and/or transpositional encipherment scheme. At each stage of solving, the ciphertext and developing solution show what has been correctly solved and what remains to be solved. The conforming device verifies the correctness of correct guesses and corrects incorrect guesses without prejudicing future guesses. There are manifold types of messages, encipherment schemes, developing solutions and conforming devices. Some puzzles and conforming devices are made by a computerized method. The game can be played by one player or several players in competition. It can be played using a game board or other apparatus or by using a computer with an interactive computer program. To solve a puzzle, a puzzle solver first forms a guess-pair.

Abstract: An educational device having an enclosed housing formed of a vessel-like base and a substantially flat transparent top the edges of which sealingly engage upper edges of the base. The housing is substantially filled with liquids. A divider is carried within the housing adjacent the top. The divider comprises mutually perpendicular vertical walls defining an array of bottom opening compartments which, when viewed through the top, are arrayed in mutually perpendicular rows and columns. A plurality of buoyant ball members, having distinctive indicia thereon, are carried in the housing.

Abstract: A teaching aid including a face panel having a flat front chamber and a plurality of squares defined within the flat front chamber and marked with a respective mark, a partition panel fitted into the flat chamber of the face panel and having a plurality of slots corresponding to the squares of the face panel, a set of mother blocks adapted for fitting into the slots of the partition panel, each mother block having an insertion hole of a particular design, and a set of differently shaped daughter blocks adapted for fitting into the insertion holes of the mother blocks respectively.