Fun Facts About Tetris

发明俄罗斯方块的是俄罗斯人阿列克谢·帕基特诺夫（Alexey Pajitnov） 。

俄罗斯方块原名是俄语Тетрис（英语是Tetris），这个名字来源于希腊语tetra（意思是“四”）和网球的英文单词tennis的结合体。

每个方块（英文称为Tetromino，仿效domino，一种骨牌）都是由4个小型正方形组成的规则图形，共有7种，分别以S、Z、L、J、I、O、T这7个字母的形状来命名。

在游戏中利用一个方块最多可以消除4行。

1995年，荷兰代尔夫特工业大学的学生在15层高的楼上用灯光进行俄罗斯方块游戏，创下世界纪录。

著名的俄罗斯方块产权之争在80年代曾经在法律界掀起轩然大波。这次产权争夺，几家欢喜，几家哀愁，几家公司倒闭，几家公司赚钱，其中的是是非非，一言难尽。

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Tetris (Russian: Тетрис) is a puzzle video game originally designed and programmed by Alexey Pajitnov. It was created on June 6, 1984, while he was working for the Dorodnicyn Computing Centre of the Academy of Science of the USSR in Moscow. He derived its name from the Greek numerical prefix "tetra-"—as all of the game's pieces (known as Tetrominoes) contain four segments—and tennis, Pajitnov's favorite sport.

The game (or one of its many variants) is available for nearly every video game console and computer operating system, as well as on devices such as graphing calculators, mobile phones, portable media players, PDAs and even as an Easter egg on non-media products like oscilloscopes. It has even been played on the sides of various buildings, with the record holder for the world's largest fully functional game of Tetris being an effort by Dutch students in 1995 that lit up all 15 floors of the Electrical Engineering department at Delft University of Technology.

While versions of Tetris were sold for a range of 1980s home computer platforms, it was the hugely successful handheld version for the Game Boy launched in 1989 that established the reputation of the game as one of the most popular ever. Electronic Gaming Monthly's 100th issue had Tetris in first place as "Greatest Game of All Time". In 2007, Tetris came in second place in IGN's "100 Greatest Video Games of All Time". It has sold more than 70m copies.

延展阅读：俄罗斯方块可以一直玩下去么？

Would it be possible to play forever?
The question Would it be possible to play forever? was first encountered in a thesis by John Brzustowski in 1988 and has been more recently investigated in published articles by Walter Kosters. The conclusion reached was that a player is inevitably doomed to lose. The reason has to do with the S and Z tetrominoes. If a player receives a large sequence of S tetrominoes, the naïve gravity used by the standard game eventually forces the player to leave a hole in a corner.

Suppose that player then receives a large sequence of Z tetrominoes. Eventually, that player will be forced to leave a hole in the opposite corner without clearing the previous hole. Back and forth, the holes will necessarily stack to the top. If the pieces are distributed randomly, this sequence will eventually occur. Thus, if a game with an ideal, uniform, uncorrelated random number generator is played long enough, any player will top out.

Practically, this does not occur in most of Tetris variants. Some variants allow the player to choose to play with only S and Z tetrominoes, and a good player may survive well over 150 consecutive tetrominoes this way. On an implementation with an ideal uniform randomizer, the probability at any given time of the next 150 tetrominoes being only S and Z is one in (2/7)150 (approximately 2×10-82). Most implementations use a pseudorandom number generator to generate the sequence of tetrominoes, and such an S–Z sequence is almost certainly not contained in the sequence produced by the 32-bit linear congruential generator in many implementations (which has roughly 4.2 × 109 states). In fact, newer Tetris brand games from 2001 and later tend to follow a new guideline such that the randomizer generates all seven tetrominoes in a permutation at one time, guaranteeing an even distribution over the short term, and this randomizer allows the player to continue a game indefinitely in theory, often clearing all blocks from the playfield. On the other hand, the "evil" algorithm in Bastet often starts a game with a series of more than seven Z pieces.

Recent versions of Tetris such as Tetris Worlds allow the player to continuously rotate a block once it hits the bottom of the playfield, without it locking into place. This permits a player to play for an infinite amount of time, though not necessarily to land an infinite number of blocks.

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今天用google时偶然发现的这个标勾起我很多回忆 小时候在小霸王学习机上玩 至今对那个过关音乐和小人的舞蹈仍然难以忘怀 后来大学寝室里忘了谁买了个掌上游戏机 像手柄一样的 里面就是各种俄罗斯方块啊... 有那种透明小点能穿透的 还有边打边移动的 但就属最传统的最经典 有一阵子玩疯了 全寝排队玩 抢着玩 我经常玩到晚上睡觉闭上眼睛前面全是俄罗斯方块 刷刷的往下掉 我就边睡边垒... 就是那个时侯我悟出了俄罗斯方块中蕴含的的道理： 你无法选择下一块落下来的是什么 但是不管你是否喜欢 你都要接受它并且认真的处理！ 人生啊 就在这简单而又深刻的游戏里了... 有一次俄语系教授从俄国考察回来 我们被要求做报告会的布景 印象最深的就是我在黑板上画了很多俄罗斯方块... 后来报告会自由提问时间冷场 于是我被撺掇起来问这个白痴问题“俄罗斯方块和俄罗斯有啥关系啊” 结果人家教授笑了笑没理我... 是什么让这个小小的游戏有这么大的魅力和强的生命力 我不知道 我只知道关于这个游戏 几乎每个人都有太多太多的回忆和故事 今天谨以此日志作为纪念 我希望到了80岁我还可以安详的玩着俄罗斯方块... by sleepingdog

花絮：写完了提交 发现已经是6月7号零点零一分... 只好把标题里面的“今天”改掉...汗...