原文 Source: 手机扫雷进阶心得

作者 Author: 郭蔚嘉(Wei-Jia Guo)

日期 Date: 8/8/2020

翻译原文 Translation: Advanced-Minesweeper-Experience-on-Smart-Phone-APPs

翻译者 Translator: 林锦帆(Jin-Fan Lin)

• 写在前面 Preface
• 手机扫雷和电脑扫雷在提速方面的优劣比较 The difference between mobile minesweeper and PC minesweeper
  • 手机扫雷操作的优势 The operation advantages of APPs than PC
  • 手机扫雷操作的劣势 The operation disadvantages of APPs than PC
• 手机扫雷操作的总体原则 The general principle of APPs minesweeper operations
• 手机扫雷操作实例 The instances of APPs minesweeper operations
  • NF操作实例 NF instances
  • 全标操作实例 FL instances

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随着智能手机技术的不断进步及Windows系统对原自带扫雷游戏的不断弱化，手机中的扫雷APP在大约十年前开始走进人们的视野，且其玩家群体迅速扩大，至今各手机扫雷APP用户数量已远超电脑扫雷。在Windows系统基本完全放弃原扫雷游戏的今天，手机扫雷APP奇迹般地为这款已有近30年历史的游戏注入了新的活力。时至今日，手机扫雷APP中的玩家成绩已有了大幅度的提升，目前已知的sub40玩家3人，sub50玩家至少已有十余人。但是，目前仍尚未有一篇系统性的手机扫雷教程面世，多数玩家仅局限于扫雷基本规则和简单的优化操作，而未能充分地在触屏设备上扬长避短。这在一定程度上阻碍了玩家水平的继续提高。笔者基于自身的手机扫雷心得，试图总结手机扫雷游戏中的进阶提速方法，供各位参考并待后来者完善。
By the ever-enhancing of smart phone technology and ever-weakening role of minesweeper in Windows systems, mobile minesweeper apps have been playing increasingly important roles in the last 10 years, leading to a rapidly growing community of mobile minesweepers. At present, there are far more mobile minesweeper players than PC minesweeper players. Mobile minesweeper apps miraculously rescued this 30-year-old game which has been abandoned by Windows. Nowadays, mobile minesweeper players have achieved far better scores than before with 3 known sub40 players and at least 10 sub50 players. However, no systematic mobile minesweeper tutorial has been published yet. Most players only know basic rules and elementary tricks, and are not able to exploit advantages and avoid disadvantages brought by touchscreen devices. This in some way prevents them from improving. I have summarized several advanced skills based on my mobile sweeping experience. I share them here both for your reference and for possible further refinement.

掌握本篇中进阶方法的前提是能够熟练、快速地判雷，主要的受众也许是手机高级50-70秒的玩家。其余玩家可适当参考，不必求全部看懂。另外，由于笔者本人水平限制，本篇不涉及游戏过程中（此处“过程中”不包括“多指开局”）的双手操作、长按操作及切换模式的操作。
To master the advanced skills in this article, you have to be equipped with continuous, fast and accurate pattern recognition. So the primary audience of this artical might be mobile players who have 50s-70s on expert. For worse players, understanding only part of this article is better than nothing. In addition, tricks like double-hand, long-hold and mode-switching are not involved due to my lack of these skills.

众所周知，在判雷基本无障碍的前提下，竞速扫雷是一款操作游戏。下面就简单分析一下手机扫雷和电脑扫雷在操作方面的优劣势。
It's well-known that if you have precise pattern knowledge, speed minesweeper is an operation game. I'd simply compare the goods and bads between APPs operation and PC operation as following.

1. 手机扫雷只需“用手指点击眼睛看到的地方”，电脑扫雷则需“用眼睛和手控制鼠标点击眼睛看到的地方”，前者的神经反射过程比后者简单得多。
   You only need to Use Your Finger to Tap Where You See on smart phone, but you need to Use Your Eyes and Hands to Control Your Mouse to Click Where You See, APPs sweeping works through more simpler reflexes than PC.

2. 由于上一条所述的原因，手机扫雷操作过程中可以灵活地长距离移动、改变点击方向，而用鼠标进行类似操作则会失误率高、消耗过多体力。
   Because of the reason above, in the process of APPs sweeping, you can Flexibly Move Long-Range and Turn Clicking Direction, but it increases the risks of misclicking and wasting too much energy doing similar operations on your mouse.

3. 手机扫雷可以方便地进行双指/多指操作，对于不会使用双指/多指操作的玩家来说，仅使用“多指开局”便可获得极大的增益。而电脑扫雷则无法同时点击盘面中的两处区域。
   It's very convenience to use your multiple fingers on smart phone APPs, to apply Multi-Finger Start will benefit a lot, even for the players who aren't familiar with multiple fingers skill. But you can't do things like this on PC.

4. 手机扫雷的全标模式下，无需进行左右键切换即可完成“标雷”和“双击”操作，这使得食指中指配合不协调的玩家也能够用手机全标扫出相当好的成绩。
   In FL mode of APPs, you don't need to switch Left Button and Right Button to switch Flagging and Chording, which allows players whose index finger and middle finger being inharmonic to achieve great score.

1. 手机扫雷过程中，手和手指会对视线造成极大的遮挡，相比之下电脑中光标的遮挡则基本可忽略。
   In the process of APPs sweeping, your hands and fingers are greatly Blocking Your Eyesight, when your mouse cursor rarely making a difference.

2. 手机扫雷格子调大则需要滑屏（横向高级理论上至少需滑3~4次），对连续操作和判雷均造成干扰；若为了避免滑屏将格子调小，则更容易点不准。电脑扫雷则完全不存在该问题。
   Big cells bring Dragging on APPs (theoretically at least 3~4 times needed at landscape expert level), which interrupts consecutive operations and pattern recognition. If you apply small cells to avoid dragging operation, then you would suffer misclicking. This problem doesn’t play on PC.

3. 电脑扫雷点击鼠标时，弹起按键可以利用微动回弹的力量；而点击手机屏幕时只能依靠手的力量按下、抬起、按下、再抬起……因此手机（单指的）极限点击速度应慢于电脑。
   Mouse budge springback will help you releasing up buttons on PC, but the only force you can use pressing down and up on APPs is from your hands, so the theoretical highest click rate of a single finger on APPs should be lower than on PC.

总的来说，在不考虑游戏过程中的双手操作的前提下，笔者认为在操作方式上，手机与电脑虽各有优劣，但手机扫雷的劣势更大，取得好成绩也更难。但根据个人及其他玩家的经验，在单指、有滑屏、无长按、不切换模式的前提下，NF达到42s左右、全标达到48s左右并不是特别难。下面就谈一谈实战操作中如何扬长避短、提升成绩。
In summary, not considering Bimanual Operation, both APPs and PC have their goods and bads, but APPs have more disadvantages than PC, it's also harder to get great score on APPs than PC. But according to the experience of mine and other players, not considering Bimanual Technique, Long-Tap, Mode Switching, it's not very difficult to achieve 42s NF and 48s FL at expert level. I'd share how to Maximum Goods and Avoid Bads and then reach higher level below.

考虑到Time=bbbv/(cls*IOE)（或Time=bbbv/(Ces*ThrP)），在判雷基本无障碍的前提下，影响扫雷成绩的主要因素应是操作效率（即IOE或ThrP）和局中停顿（停顿事实上直接导致了cls或Ces降低）。

Considering Time=bbbv/(cls×IOE)（Or Time=bbbv/(Ces×ThrP)）, if you know patterns well enough, the main factor of minesweeper score should be Efficiency (i.e. IOE or ThrP) and Pause in the Game (which actually brings down the cls or Ces).

前者在NF模式下基本只受到破空（即点开op）操作的影响，在全标模式下则与标雷及双击位置有关。破空目前已有较为成熟的教程（见张少武《一支穿云箭——“破空”简要教程》）；标雷双击尽管没有针对全标的教程，但目标与常规FL是一致的——标尽可能少的雷、用尽可能少的点击、开尽可能多的格子，判雷过关的前提下多加练习并学习高玩录像（推荐鞠泽恩、朱耀宇的电脑扫雷录像，林锦帆的手机扫雷录像；全标尤其推荐胡恩彬的电脑扫雷录像，操作套路性非常强）即可提高（据悉朱耀宇计划推出FL教程）。并且，上述内容在电脑端和手机端并无较大区别。综合以上原因，本篇基本不对其作详细讲解。
In NF mode, the former factor is only influenced by Opening Breaking. In FL mode, the former is about the Position of Flagging and Chording. About Opening Breaking, mature tutorial has been published (see An Arrow Break Through The Mist——A Condensed Guide of Opening Breaking by Shao-Wu Zhang). About Flagging and Chording, although mature tutorial hasn't been published, both APPs and PC minesweeper share the same target (flagging as less mines as possible, clicking as less as possible, opening as many cells as possible), after you master patterns, practise and practise, and learn top-players' replays (I prefer Ze-En Ju and Yao-Yu Zhu's PC replays and Jin-Fan Lin's APPs replays. If you are all flagging style, En-Bin Hu's PC replays are the most recommended, who has a extreme modeling style), and then you will make a further step (I heard a FL tutorial is planing by Yao-Yu Zhu). There're no significant difference in these area between PC and APPs, so I rarely mention this part here.

后者则可以详细分为若干类。在电脑扫雷中主要表现为反应时间（翻开某格后利用该格信息进行下一步判断，一般会造成0.3~0.5s停顿）和长距离移动（一方面受到移动速度的限制，另一方面长距离移动后往往需要重新定位鼠标）。而手机扫雷（熟练后）可基本忽略长距离移动的影响，但滑屏操作（滑屏时基本无法点击，也切断了判雷的连续性）则会带来更多的停顿。手机扫雷操作的总体原则便是：充分利用手机扫雷的优势、摆脱其劣势，尽量减少局中停顿。下面具体对其进行阐述。
It's possible to categorize the latter factor in detail. Reaction Duration (to decide the next step using the information of the cell just opened, generally cause 0.3~0.5s pause) and Long-Range Movement (restricted by movespeed, also a relocation step is needed after that) are mainly present on PC. The influence by Long-Range Movement is ignorable after you are really familiar with APPs, but Dragging (almost not able to tap, and the fluency of pattern recognition is interrupted) causes more pause. So the general principle of APPs minesweeper operation is, Make Full Use of Advantages of APPs, Get Rid of Disadvantages of APPs, Cut down the Pause in the Game. Introduce in details is below.

扫雷过程中减少甚至消除反应时间的影响，靠的是反向点击、双（多）线操作等，这些概念在近年已逐渐为进阶玩家所熟知（笔者早年的NF教程及张少武的知乎专栏中都有相应论述）。笔者在此尝试对这类操作进行一次更全面的概括：

• 能为下一步判雷提供新信息的先点；
• 能破空或大概率破空的先点（其实这句包含在前一句里了，因为破空提供了大量新信息，但为了强调破空所以单拿出来）；
• 无法为后面判雷提供信息的（即周围雷已经全部判出的）后点；
• 需要等翻开某格后才能判断的后点；
• 无需翻开新的格子即可判断的先点。

在这五条原则的指导下，优先破空、反向点击、双（多）线操作的原理都不难理解了，第三部分会给出一些例子。由于触屏操作较为灵活（即第一部分所说的第2条优势），上述先后次序在手机扫雷中实现远比使用鼠标轻松。这就是手机扫雷最重要的“扬长”，也是最需要花时间和心思去练习的。
To get rid of or even eliminate the influence of reaction duration, the concepts of Reverse Clicking and Multi-Thread Operations are gradually mastered by advanced players, which have been well-discussed in my early years NF tutorial and Shao-Wu Zhang's zhihu column. Here, I'm trying to summarize all these kinds of techniques as 5 guidelines:

• a. First to click the cells which are able to provide new information for next pattern recognition;
• b. First to click the cells which are most likely to break opening(In fact it's contained in a. because opening breaking provides a great deal of information, but I solely write it to emphasize opening breaking);
• c. Last to click the cells which are not able to provide any new information for next pattern recognition,(i.e. all pattern around it is known);
• d. Last to click the cells which are not able to judge until certain cell is open;
• e. First to click the cells which are able to judge without any new information.

Under the guide, the principle of Opening Breaking First, Reverse Clicking and Multi-Thread Operations are easy to understand, I will read some examples in the next part. Because of the operation of smart phone APPs is more flexibly(i.e. the 2nd advantage I mentioned in the first part), the principles about order upon are far easier to use than on mouse. Making Full Use of Advantages is all the important in APPs minesweeping, and the most time and effort needed to practice.

第一部分列出的其余的优/劣势也应考虑如何利用/避免。上文说到多指开局可获得极大的增益，这其实不仅体现在开局可以无脑解决多个3BV，更体现在开局后可以提供大量可判局部，此时可以大量运用上一段所述的点击技巧，可谓锦上添花。而对于滑屏操作，目前多数玩家的做法是尽可能减少滑屏次数，从而缩短停顿时间；但除此之外还有一种有效的思路：在需要停顿判雷时滑屏，以此将滑屏停顿与反应时间合二为一。至于手遮挡视线的问题，笔者的做法是视线不与桌面（手机平面）垂直，从稍左侧看屏幕，会获得一定的改善。
The goods/bads remaining in first part should also be considering how to make use of/get rid of. As I have mentioned, Multi-Finger Start will benefit you a lot, which is not only embodied in solving several 3BV brainlessly at start, but also Showing Many Solvable Patterns After Start, While You Can Apply Many Tapping Tactics as mentioned in the former paragraph, making your start better. As for dragging, the most common policy now is to Reduce Dragging As Many As Possible for shorter pause, but another policy will also work: Drag Only When Recognize Patterns and Make Decisions, combining Dragging Duration and Reaction Duration as one. As for the blocking view problem, my choice is to abandon vertical view on desk (or phone screen), to watch screen from the left of center, that will benefit a little.

最后单独用一段谈一谈手机全标的试探双击操作。众所周知，适当使用试探双击可以无脑翻开大量格子，而这是FL对NF的最大优势之一：若将无需停顿及减速的连续操作视为一组，则FL一组操作可以完成十几、二十个3BV，而对绝大多数玩家来说NF一组操作充其量只是一个三连击。电脑扫雷玩家有的较多使用试探双击（例如周丹、Kamil），有的较少使用试探双击而采用双线操作抵消反应时间（例如朱耀宇、鞠泽恩），二者均能取得可观的成绩。但手机扫雷与电脑扫雷在操作方式上的区别，导致试探双击的使用也存在区别。在手机上同一个方向连续双击3下（1次正常双击+2次试探）时，若第1下试探未能成功，则第2下试探会变为标雷操作，而在电脑上不会出现这种问题。因此尽量不要在手机上连续试探双击2次。另外，考虑到手机扫雷的操作灵活性，试探双击的收益事实上比电脑上低（高级由于雷较为密集，收益变得更低），因此笔者认为当存在其他标雷双击位置时，不推荐进行试探双击（尤其是扫高级时），在其他位置标双后再回来补双击可能是更优的操作方式；若已经不存在其他的标雷双击位置，可使用一次试探双击抵消反应时间（还可以标“有双击潜力但尚不能双击”的雷抵消反应时间）。而扫初中级时若激进地追求好成绩，可以较多使用试探双击，当然势必导致平均成绩变差且方差增大。
At last, use a sole paragraph devoted to the Tentative Chording in All Flagging style of APPs. It's well known that wise use of Tentative Chording will solve many cells brainlessly, which is one of the greatest advantage of FL than NF. If you treat consecutive operations without any pause or speed down as a bunch of operations, then a bunch of FL operations will solve ten to twenty level 3BV, while a bunch of NF operations is no more than a 3-combo for the majority of players. PC players such as Dan Zhou and Kamil mainly use Tentative Chording, and PC players such as Yao-Yu Zhu and Ze-En Ju rarely use Tentative Chording but mainly use Multi-Thread Operation to eliminate Reaction Duration, both styles would achieve great score. However, the operation difference between APPs and PC causes the difference use of Tentative Chording between APPs and PC. Continuously chording 3 times on APPs(1 normal chording + 2 tentative chordings), when the 1st tentative chording failed, the 2nd tentative chording would work as a flagging(this problem didn't play on PC), so you've better not use Tentative Chording continuously(but I will show you a magic case at the last of this tutorial). In addition, given the flexible of operation on APPs, the profit of Tentative Chording is lower than on PC(it's even lower on expert level for the denser mines and less 1s). As far as I'm concerned, when you find another cell worth flagging+chording, Tentative Chording is not recommended especially on expert level, Flagging+Chording at Other Cell and then Being Back and Adding A Chording might be a better bunch of operations. If there's no cell worth flagging+chording instantly, you might Use A Tentative Chording to Eliminate Reaction Duration(or Put A Flag on The Mine Which Has The Potential Helping You Chording Other Cells to Eliminate Reaction Duration). On beginner/intermediate level, Tentative Chording is recommended to apply at everywhere for great high-score, while you are bearing a worse average score and bigger variance.

$ms184592 这是笔者目前的高级NF纪录局。注意9~10s的操作顺序：①左侧点出两个1后尚不能对左侧的三连击立即反应，因此先点了靠边上方的3；②同时反应过来第二个1的左边一格是100%破空的位置，立刻点击破空；而3和这个op中间的2对后续判雷毫无帮助，优先级低，在破空之前不点；③破空后立刻点击这个2，同时对刚刚点出的op作出判断。整个过程充分利用了手机扫雷的操作灵活性（①和②离得更远也可以使用，在电脑上就较为困难），没有停顿。
$ms184592 This is the present expert NF record of mine. Please concentrate on the tap order of 9~10s: ①When you are not able to reaction to the 3-combo left to the two 1s you have just opened, the position of the 3 upon by the edge should be opened first. ②At the same time, you are remind of that the cell touch the left side of the 2nd 1 has 100% chance to break an opening, tap it immediately for the opening. The 2 between 3 and this opening provide you no information for further pattern recognition, so regard it as a Lower Priority cell to be opened until the opening was broken. ③After the opening is shown, open the 2 cell immediately and recognize the pattern around the opening you’ve just broken and make decision of your next move in the mean time. (Tips: please be aware of the fact here that where you tap is not where you see) The flexible of APPs operation is fully made use without any pause in the process (① and ②) is also applicable while the distance between them is even longer, which is harder to apply on PC).

这局15~18s还有一组精彩的点击次序，请读者自行看录像分析。
There is a bunch of delicate tapping order in 15~18s in this game, please analyze by yourself as homework.

$ms177760 这局的重点是25~30s的点击次序，此局部获得了5.9左右的3BV/s（估算），在手机高级中实属难得（手速更快的人可以更高），请读者对照第二部分所述自行分析。
$ms177760 The key point of this game is the tapping order in 25~30s, in this region I received about 5.9 3BV/s(estimated), which is really hard to reach for me in mobile phone expert(people who have better tap rate might get higher 3BV/s here). Please analyze by yourself using the knowledge you received from the second part.

另外12s有一处贴左侧边界的从下到上的三连击，先点下面是因为这样可以进行下一步判断；而上面两格与下一步判断无关，刚好可以抵消掉下一步判雷的反应时间。类似操作在手机扫雷中十分常见（贴边连击反向更优）。
In addition, there’s a bottom to top 3-combo touching the left edge at 12s in this game, for it’s able to decide next move if you first tap the down cell. The up two cells which are irrelative about deciding next move, are just for tapping to eliminate the reaction duration of the next pattern recognition. Similar operations (Reverse On-Edge 3-Combo is better) is very common in APPs minesweeping.

ps 由于操作水平的限制，笔者自己的录像中很多点击次序也并未达到最优，读者可以自行思考一下最优的点击方式。
Ps: due to the restriction of my operation level, many tapping orders in my replays are suboptimal, I’d appreciate it very much if you find the optimal order.

$ms219546 除此之外还有一种“顶边三连击”的情况（即方向与边界垂直、其中一格贴边），此时由于贴边格有较大概率可破空，因此应先点贴边格使op尽早暴露出来（顶边连击点边更优）。这局6s点出两个1后在右边点2（因为两个1下面尚未判出），而后从左至右三连击保证优先破空。
$ms219546 Besides, there’s another Touch-Edge 3-Combo case (i.e. vertical to the edge and has a cell touching the edge), because of the high probability of opening on edge, you have better tap the cell touching the edge for earlier opening breaking (Edge First Touch-Edge 3-Combo is better). At the 6s of this game, after the solving of two 1s, tap the 2 on the right (while the cells touching the bottom of two 1s are not recognized), then do 3-Combo from left to right for the guideline of Opening Breaking First.

40s处从上到下的两排连击同样遵循该原则（只是并未破空）。贴右边和下边的连击与正常点击习惯相反，需多加练习。
At the 40s of this game, two column of combos from top to bottom also follows this principle (don’t break opening, though). As for the cases touching right edge or bottom edge, the combo order are reverse to common habit, which need time to practice.

$ms242004 这是neymax在超小图上获得的目前的纪录局。38~39s处，点完贴上边的1后立刻在左边三连击，是十分出色的操作。但下一步继续在左边三连击则是稍逊一筹的选择，最好是回去点1旁边的格子或在下方三连击，而后再继续左边的三连击。
$ms242004 This is neymax’s present record on a super small board. In the 38~39s of this game, immediately doing 3-combo on the left after tapping the 1 touching the top edge, is an excellent bunch of operations. But the next 3-combo is a suboptimal choice, it’s better to tap the cell touching the 1 or do 3-combo on the bottom, then do the 3-combo on the left.

$ms237945 笔者在绝世好图上获得的全标中级3BV/s纪录局，最精彩的地方莫过于14~17s的右下角处理。其中16s下面只剩两排时，采取标双左边-标双右边-标双左边-右边补双击（而非标双左边-标双左边-标双右边-试探双击）的顺序，无停顿、IOE最优的同时，避免了使用试探双击可能造成的多余点击。但笔者本质上还是个NF玩家，这一局部开头的处理略显保守，基本只能对两步以前就暴露出的双击位置作出反应；若能对一步前暴露的双击位置作出反应，则能省出若干点击。读者可以自行尝试。
$ms237945 This is my intermediate FL 3BV/s record on a dreamboard. The most fabulous point to mention is the treatment of bottom right corner in the 14~17s. At the 16s in this part only two rows remaining, I apply an order of [flag and chord on the left side]->[flag and chord on the right side]->[flag and chord on the left side]->[supplementary chord on the right side] instead of [flag and chord on the left side]->[flag and chord on the left side]->[flag and chord on the right side]-[tentative chord], which achieves no pause and optimal IOE while is able to avoid any wasteclicks that may be caused by tentative chording. However, as a player of NF mind, the treatment at the start of this region is too conserved that I’m only possible to react to the chording positions which appear two steps before. In fact, you are able to save several taps if you react to the chording positions which appear one steps before than my game, please have a try.

$ms241765 笔者目前的全标高级3BV/s纪录局，个人认为较为精彩的操作有以下几处：7s时在“1222”标一开一后连标了下面2雷（而不是右侧双击），是在“没有可双击格”（因为右边的2还没反应过来）时“标了有双击潜力的雷”；而后自然而然在上面双击-在下面标双-在上面补双击。
$ms241765 This is my present expert FL 3BV/s record. As far as I’m concerned, a few wonderful operations in this game are worth mention: At the 7s after I put 1 flag and chord to open 1 cell in the 1222 pattern, I consecutively flag the next 2 mines below instead of chording the 2 right side, which is because of Put A Flag on The Mine Which Has The Potential Helping You Chording Other Cells when There's No Cell Worth Chording Instantly (it’s impossible to react about the 2 just opened). Then naturally [chord on the up side]->[flag and chord on the down side]->[supplementary chord on the up side].

11~13s是标双右边-标双下边-右边补双击-下边补双击-右边补双击。
In the 11~13s, it’s [chord on the right side]->[chord on the down side]->[supplementary chord on the right side]-> [supplementary chord on the down side]-> [supplementary chord on the right side].

18~19s在一横排上左右开花，但这里没能在两边及时补双击（急急忙忙跑左边去了），事实上影响了这局的成绩。
In the 18~19s, I flag and chord left and right, but it’s a pity that I forget to add chord on both side (leave in a hurry to solve the left part) so that the final result is slower than theoretical best.

$ms246934 pauv全标44s的录像。2~3s标雷后左右分别双击一下，而后标双左边-左边标雷不双击（这里不可能立即反应能双击，属于标了“有双击潜力的雷”）-右边补双击-左边补双击。
$ms246934 It’s the FL 44s replay of pauv. In the 2~3s, chord left once and right once after flag, then [flag and chord on the left side]->[flag on the left side without chording (it’s impossible to react the chording immediately, but belongs to the kind of flag on The Mine Which Has The Potential Helping You Chording Other Cells)]->[supplementary chord on the right side]-> [supplementary chord on the left side].

10s时标完4后下面双击-上面双击两下（由下面的2给出的信息，这里试探双击成功率较高）-更上面标双-回来补双击（没有在右边补是因为出屏幕了）。
At the 10s, after the flags surrounding the 4, [chord on the down side]->[chord on the up side twice (there’s a high probability of a success tentative chording)]->[flag and chord on the up side even higher]->[supplementary chord back (it seems a mistake not chording on the right for out of screen)].

34s标完4后双击-上面标雷双击两下-右边补双击-上面补双击。另外pauv的录像标雷位置十分犀利，读者可以多加学习。
At the 34s, [chord after the flags surrounding the 4]->[chord twice on the up side]-> [supplementary chord on the right side]->[supplementary chord on the up side]. In addition, the positions that pauv choose to flag are very trenchant, from which I recommend you to learn more.

最后补充一个试探双击建奇功的边角处理方式。$ms251274 $ms251276 如这两个自定义录像所示，这种局部共有两种雷的分布，它困扰广大玩家的是点开一格后总需要停顿一下来判断。而手机全标模式下，无脑点5下（如第一个录像所示）即可完成该局部，整局收尾时使用该操作可节省较多时间。注意：若连续试探双击每一下只开一格，那么试探双击失败的位置则一定是雷，此时无脑点过去是正确的。类似的局部应该还有，这里不过多举例。
As the last instance of my tutorial, it’s time to share you the corner trick Tentative Chording Work Wonders. $ms251274 $ms251276 As showing on the replays above, there are two kinds of mine distribution possible, which are bugging players that you should always pause after opening a cell to decide the next move. In the FL mode of APPs, you are able to tap 5 times brainlessly as showing in the first replay to solve this region, which saves much time especially when ending. Be attention: if you apply tentative chording among the cases for only one cell be opened possible, then the cells fail to be opened will always be mines so that it optimal to apply brainless chordings. There are similar patterns waiting for your summarizing.

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补充一个常规标雷三连双击操作，适用于边角位为1且斜向相邻位为雷的局部。
an addition by pauv: There’s a frequently used brainless flag plus 3-chord-combo trick, which fit the cases of a region with an 1 on the edge and a mine diagonal touching the 1.

注意 $ms224628 开局左侧（破空），以及 $ms216985 开局左侧（解决5格）。
$$ms224628 Break an opening. $ms216985 Clear 5 cells.

此法最坏的情况见 $ms246934 这局14秒处上方开出的数字3处，如开出数字2，存在标错雷的可能性，使用时需要注意。
$ms246934 The worst situation is if the position of the 3 opened by this trick is a 2, you have half chance of a wrong flag.

补充2：因巨帝写过《重要且容易被忽视的细节-双击位置》，本文并未涉及相关内容。
Because of Ze-En Ju has written An Important But Easily Be Ignored Detail-Chording Position and the restriction of words, relative topic is not involved into this tutorial.