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15岁少年5.25秒魔方世界纪录

How a 15-year-old solved a Rubik's Cube in 5.25 seconds

在20世纪70年代中期 厄尔诺 鲁比克发明了魔方 但这不意味着他知道
In the mid-1970’s, Erno Rubik invented the Rubik’s cube. But that doesn’t mean knew
怎么玩 他花了几个月来研究它
how to solve it. It took him a few moths to figure it out.
当时第一届世界级魔方大赛在1982年举行
By the time the first World Rubik’s Cube Championships were held in 1982,
那个冠军在23秒内恢复了魔方
The winner — he could solve the cube in a little less than 23 seconds.
而现在?[蒙太奇新闻关于科林的记录的报道]
And these days? [news montage of collin’s record]
今天我们知道了世界纪录的保持者科林 伯恩斯是怎么做到的
This is world record holder Collin Burns, and today, we find out how he did it.
[字幕]
[TITLES]
“记录可能保持一天 可能保持几年 之前的记录
“It could last another day; it could last another few years. The previous record lasted
只保持了2年以上 其实最需要的一个就是运气
for just over 2 years. But with single solve, especially, you just need to get lucky. Or
或者说至少这很大一部分由它决定”
at least that’s a big part of it.”
科林想要弱化他技能的重要性 但是世界上的两种
Collin tends to downplay his skills but it’s worth noting there are two types of world
记录 一个是在魔方速拧赛中
records. The way speedcubing competitions work is that
由志愿者根据电脑的指令打乱魔方
volunteers scramble the cubes according to instructions that are generated by a computer,
然后竞争者都得到一模一样的魔方(打乱的)
so competitors all get the same scramble.
接着如此恢复五个 取其中三个中等成绩的平均值作为成绩
They do 5 solves and their three middle scores are averaged.
而科林是单个速拧的记录保持者
So Collin holds the world record for a single solve.
平均成绩的保持者是一个19岁的澳大利亚小伙
But the world record for an average score is held by a 19-year-old in Australia.
然而 科林的记录也是很好的 在比赛上我们遇到他
Still, Collin’s record is a huge deal. At the competition where we met up with him,
孩子们正在向他要亲笔签名
kids were asking him for his autograph.
现在赞助他的是一个魔方公司和一个魔方零售商
He’s now being sponsored by a cube company and by a cube retailer, which are paying for
让他去全球讲解 而他想让人们明白你也是可以做到的
him to travel internationally. And he wants people to know, you could do this too.
“人们对魔方最大的就是认为它太难了 然而
“The biggest misconception about cubing is that it’s difficult, which it really
不是的” 流行文化中把魔方当做
isn’t.” Pop culture treats the Rubik’s cube like
智力测试 但它不是的 至少不应该这样
some sort of IQ test, but it’s not. At least not anymore.
“通常 平均成绩是更有效的 因为需要一直保持快的速度”
“Generally average is much more impressive because you have to be consistently fast.”
但是 科林的成绩不可忽视 在比赛上我们遇到他的时候
Still, Collin’s record is a huge deal. At the competition where we met up with him,
一些孩子问他要亲笔签名 还问“你是那个著名的魔方男吗?”
other kids were asking him for autographs. “are you that famous cube guy?”
我最近在网上购买了一个魔方和初级教程如果你可以
I recently bought a cube online and it came with instructions for beginners. And if you
记住那些教程 也就可以在几分钟内恢复魔方
memorize those, you can solve the cube in a couple minutes.
它可以帮助你理解一些魔方的构造 最先 它看起来一个
It helps to understand the design of the puzzle. At first glance, it looks like a cube made
小方块堆积的立方体——是的 三层九个方块
out of cubes — right, three layers of nine.
但如果仔细看 你会发现它并不是真正的方块
But if you look closer, you’ll see there aren’t actually any cubes here. So that
一面接着一面 一边接着一边
tells you that the corners will always be corners, the edges will always be edges, and
最中间的颜色就是该面的颜色
the middle pieces determine the color of that face.
速拧魔方的人会买一些特殊的魔方 润滑和改装它们
Speedcubers will buy special cubes. They can lubricate them and adjust the tension. But
但真正的速度诀窍是他们照着之前打乱的
the real key to their speed is efficiency – they’re looking several moves ahead, and
然后想出很少的步骤来得到相同的结果
they use fewer moves to get the same result.
而魔方有4300亿亿种拧法
So there are 43 quintillion possible arrangements for the cube.
几年前 一些研究者借助谷歌的计算能力来解决
A few years back, some researchers borrowed computing power from Google to find out that
用20步或更少的步骤来打乱魔方的方法他们称这为“神数字”
any scramble can be solved in 20 moves or less. They call it God’s Number.
然而没人能做到
But humans just aren’t that good.
第一个人用了100到200步来恢复魔方
The beginners’ method that I learned uses 100 to 200 moves.
速拧者大多用50到60步 他们可以做到这样很大程度上是
Speedcubers use more around 50 to 60 moves. And they can do that, in part, because of
建立在前速拧者的经验上
the knowledge gained by the previous generation of speedcubers.
魔方第一次在时间流行要追溯到80年代 人们开始
When the cube first spread around the world back in the 80s, people had to learn through
尝试和不断失败
trial and error.
这是起源于很多数学部门和大学俱乐部当时人们发现
This was happening in a lot of math departments and campus clubs. People were discovering
发现了魔方 而且分享他们认识的
the cube at the same time, and they were sharing what they learned.
科林使用的方法是杰西卡 弗莱德里奇创造的这位工程教授当时
The method Collin uses was developed by Jessica Fridrich, an engineering professor who was
是一位大学学生
a college student at the time.
这个方法是先在一面拧好十字形 然后将这面作为底面
It starts with a cross on one of the faces. And that face becomes the bottom layer. Then
然后同时恢复最底层和中间层的魔方
what they do is solve the corners of the bottom layer and the middle layer simultaneously.
“然后你就会发现这些都恢复了”
“So, now you can see that all of this is solved.”
对于最后一层 他们从他们记住的解法中选择一个进行恢复
And for the final layer, they’re choosing from dozens of algorithms that they’ve memorized.
而这时那些恢复好的颜色就在转动时又变得混乱
And those are sequences of moves that mess up the cube temporarily to move certain pieces
再将剩下的颜色恢复到原始的一面就成了
into place. And then put the rest of the cube back where it was.
近来又卷起了魔方热 同样的
The Rubik’s cube has made a comeback in recent years along with that same ethic of
大家分享恢复魔方的技巧和策略
sharing tips and strategies.
你所需要资源都有 而且需要的还有另一个
So all the resources you need are there, there’s just one other thing.
练习!
Practice!
这是5年前的科林 成功不是一蹴而就的
This is Collin nearly 5 years ago. world records are not built in a day.

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https://www.youtube.com/watch?v=XwNUmnDu1r8

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