Blokus is an abstract strategy board game for two to four players, invented by Bernard Tavitian and published in 2000 by the Sekkoia company. It has won several awards, including the Mensa select award and the 2004 Teacher's Choice Award. Tavitian, an engineer and artist was inspired to create the game while trying to find an appropriate frame for a painting of an orchestra made up of geometric figures.
The correct pronunciation of the name Blokus has been the subject of some debate. The game's inventor is French, and implies that a French pronunciation may differ, but he referred the question to game's US distributor, who responded: "We pronounce it with a "soft o" as in "block." But many customers seem to pronounce it with a "long o" as in "Blow-kus.".*
The novice typically tries to seal off an area for themself to reduce the area the opponents can access. But since pieces only are connected via their corners, another player can pass through that corner from the mirrored direction. It is therefore difficult to cut off other people from accessing 'your' area. Instead, the successful tactic is to try to expand into as many areas on the board as possible. In other words, game strategy is dominated by offense rather than defense.
The smaller tiles are very useful during the later stages of the game: the smaller a piece is, the better it is at occupying the holes in the tiles of other colors, and thus opening up new areas of the board for expansion. It can happen that no player can finish off all their tiles. Therefore there is usually a score bonus for spending all one's tiles, and a further bonus for playing the 1-omino last. These rules are relevant when multiple games are being played and score is being kept cumulatively.
In the three-player game, the players take turns playing for the fourth color (blue). Because the players must play out of corners of the board, one player will always be playing out of the corner opposite to blue. It is widely believed that this is an advantage. The reason for this is that blue is generally used as a tool to disrupt (or "blok") the other player’s moves. For most of the early game, the player opposite blue is too far away to be successfully bloked, but can still use the color themself to blok others. Various methods have been suggested to solve this problem, but it is recommended that players come to an agreement among themselves that best suits their preferences.
Blokus is played on a board made up of 400 (20×20) squares.
Example: Red plays first, then yellow plays, then green plays. Once all three players have taken their turns, red plays for blue (the fourth color) and then takes his regular turn. The next time it is blue’s turn, yellow plays for blue and then passes the turn to red.
The first piece played by any player must cover a corner square.
The placement of pieces is governed by two rules:
As play proceeds, the board becomes more and more crowded, allowing for less and less possible moves. Whenever a player cannot play a piece, his turn is skipped. If a player can play a piece, he cannot opt not to.
The players take turns drafting the pieces that they will play with. Each color is drafted separately until each color has been drafted. The players alternate taking first pick of each color. Once every piece as been drafted, play proceeds as normal.
Notes: each player has a mix of pieces of different colors, but the rules for placement are the same. Sometimes a situation will arise in which a player skips a turn for lack of a move, but then is able to play again later due to subsequent moves made by other players. Though this does not contradict the rules of Blokus, it would be impossible in a standard game of blokus.
Once no players can make any more moves, the player with the least tile segments on the board wins.
This game tends to be faster and more aggressive, since the players start in the middle of the board, as opposed to its edges.