How to actually play well — not the rules, but the decisions. This guide assumes you already know how a trick works; if not, read the rules first. Everything here is the strategy the site's strongest honest bots (Enoch and Grandmaster) really use: a playbook transcribed from a strong human player, then tested over millions of self-play hands. 这不是规则，而是如何打得更好——即每一步该怎么决策。本指南假定你已经了解一轮牌是怎么进行的；如果还不了解，请先阅读规则。这里的内容正是本站最强的诚实机器人（Enoch 与 Grandmaster）实际使用的策略：先由一位高水平玩家口述成打法手册，再经过数百万局自我对弈验证。
Eight ideas separate a beginner from a solid player. Learn them in order — each one is worth more than every fancy trick in the Advanced tab. 从新手到稳健玩家，只差八件事。请按顺序掌握它们——每一条的价值都超过“进阶策略”里的任何花招。
The two teams are not playing the same game. The defending team (the declarer and their partner) wins by denying points. The attacking team wins only by collecting them. Every decision you make should follow from which of those two jobs is yours. 两队打的其实不是同一个游戏。防守方（庄家及其对家）靠拦截分数取胜，进攻方只能靠收集分数取胜。你的每一个决定，都应当从“我这一方的任务是什么”出发。
Only 5s (5 points), 10s (10 points) and Ks (10 points) are worth anything. In the standard four-player, two-deck game that is 200 points on the table, and the attackers take over the declaring seat at 80. 只有 5（5 分）、10（10 分）和 K（10 分）算分。在标准的四人两副牌局中，全场共 200 分，进攻方拿到 80 分即可夺庄。
Attackers: a trick with no points in it barely matters — chase the tricks that hold 5s, 10s and Ks. Defenders: your goal is not to win tricks, it is to make sure the tricks the attackers win are empty. 进攻方：没有分的一轮几乎无关紧要——要去抢带 5、10、K 的那些轮。防守方：你的目标不是多赢轮次，而是让对手赢到的每一轮都是空的。
Three numbers decide how your whole hand should be played: 三个数字决定你这一手该怎么打：
Everyone knows to declare the suit they hold the most of. The part most players get wrong is that a pair in the trump suit is worth roughly three to four loose trump cards. Two consecutive trump pairs — a tractor in trump — is better still. Pairs win tricks that singles cannot, and they are what lets you beat an opponent's pair-led trick. 谁都知道要亮自己张数最多的那门花色。多数人搞错的是：主牌花色里的一个对子，价值大约相当于 三到四张散主牌；两个连续的主牌对子（主牌里的拖拉机）更强。对子能赢下散牌赢不了的轮次，也是你压住对手对牌的唯一手段。
Do not declare the moment you legally can. Early in the deal you have seen only a fraction of your cards, and a trump suit you commit to at card six can easily finish short. Also: aces and kings play better as side-suit cards than as trump — a side-suit ace is a free trick, while the same ace inside trump is just another trump. 不要一能亮就亮。发牌早期你只看到自己一小部分牌，第六张就定下的主牌，很可能最后张数很少。另外：A 和 K 当副牌比当主牌更好用——副牌的 A 是白赢一轮，而同一张 A 放在主牌里只是又一张主牌而已。
If you win the declaration you pick up the kitty and bury the same number of cards. The single best thing you can do with it is void an entire side suit — once you hold none of a suit, you can ruff it with trump every time it is led, all hand long. 赢得亮主后你会拿到底牌，并扣回同样张数。扣底能做的最有价值的一件事，就是把某一门副牌彻底扣光（缺门）——一旦你这门牌一张不剩，此后每次别人打这门，你都可以用主牌毙掉。
Never bury: 绝对不要扣：
Points in the kitty are a bet. Whoever wins the last trick takes the kitty at double value, so burying 10s and Ks is profitable only when you expect to win that last trick. Strong hand: bury points. Weak hand: bury none. 往底牌里扣分是一场赌博。谁赢下最后一轮，谁就以双倍拿走底牌，所以只有当你有把握赢下最后一轮时，扣 10、K 才划算。手牌强就扣分，手牌弱就一分不扣。
When you have the lead, in order: 当你领出时，优先顺序是：
Do not open a trick with a naked joker or with the rank card. It wins a trick you did not need to win, tells everyone how strong you are, and burns the card that was going to take your last trick. The only exception is a monster trump holding (roughly 15+) where you are deliberately bleeding everyone else dry of trump. 不要用光杆的王或级牌来领出。它赢下的是一轮你本来不需要赢的牌，还暴露了你的实力，更烧掉了本该给你保最后一轮的那张牌。唯一的例外是你手上主牌极多（大约 15 张以上），此时你是在有意把所有人的主牌都抽干。
When you are not leading, the question is never "what is my best card?" — it is "who is winning this trick?" 当你不是领出方时，要问的从来不是“我最大的牌是哪张”，而是“这一轮现在是谁赢”。
This is the biggest single gap between an average player and a strong one, and it needs no talent — only attention. You do not have to remember all 108 cards. Track the top of each suit and you will know exactly when your own cards become unbeatable. 这是普通玩家与高手之间最大的差距，而且它不需要天赋，只需要专注。你不必记住全部 108 张牌，只要盯住每门花色的顶端，你就能准确知道自己手里的牌什么时候变成了无人能压的牌。
Say you hold 10♡ 10♡ and a K♡, and hearts is not trump. Both A♡s have been played? Your K♡ is now boss. Both A♡s, both K♡s, and the Q♡s and J♡s are gone? Your 10♡ pair is boss — and worth 20 points. 比如你手上有一对 10♡ 和一张 K♡，而红桃不是主。两张 A♡ 都出过了？你的 K♡ 现在就是最大牌。两张 A♡、两张 K♡，以及 Q♡、J♡ 也都走完了？那你这对 10♡ 就是最大对子——而且值 20 分。
The last trick pays out the kitty, doubled. That single trick is often worth more than the previous ten combined, and it is decided by what you kept, not by what you played. 最后一轮结算底牌，而且是双倍。这一轮的价值常常超过前面十轮的总和，而它的胜负取决于你留下了什么，而不是你打出了什么。
The Advanced tab above covers hand evaluation with real numbers, kitty burial worked through card by card, the low-trump hand-off, long-suit throws, kitty-multiplier maths, and how to play against each bot tier. 上方的进阶策略标签页会讲到：用具体数字评估手牌、逐张演示扣底、小主牌过渡、长套甩牌、底牌倍数的算法，以及如何针对各个难度的机器人。
Every example below uses the standard table: four players, two decks, 25 cards each and an 8-card kitty. Unless stated otherwise the trump rank is 2 and the trump suit is spades, so trump runs big joker > small joker > 2♤ > [2♡ = 2♢ = 2♧] > A♤ > K♤ > … > 3♤. 下面所有示例都用标准牌局：四人、两副牌、每人 25 张、底牌 8 张。除非特别说明，级牌为 2，主牌花色为黑桃，因此主牌大小依次为 大王 > 小王 > 2♤ > [2♡ = 2♢ = 2♧] > A♤ > K♤ > … > 3♤。
Count the trump in a two-deck pack: 26 cards of the trump suit, 6 off-suit rank cards, and 4 jokers — 36 trump out of 108. You are dealt 25, so your expected trump count is 36 × 25 ÷ 108 ≈ 8.3. That single number anchors every judgement you will make: 数一数两副牌里的主牌：主牌花色 26 张、其他花色的级牌 6 张、王 4 张——共 36 张主牌，总牌数 108。你拿到 25 张，因此主牌张数的期望值是 36 × 25 ÷ 108 ≈ 8.3。这个数字是你一切判断的基准：
| Trump count主牌张数 | What it means含义 |
| 12+ | Controlling. You can ruff freely, bleed trump, and bury points confidently.掌控局面。可以放心毙牌、抽主，也可以放心往底牌扣分。 |
| 8–11 | Normal. Play the standard plan; bury a moderate number of points at most.正常。按常规打法走；扣底最多扣中等数量的分。 |
| 6–7 | Short. Stop planning to win the last trick; get points out early instead.偏少。别再指望赢下最后一轮，改为尽早把分处理掉。 |
| ≤5 | Weak. Bury nothing valuable and play a pure denial game.很弱。有价值的牌一张都别扣，彻底改打拦截。 |
Now weight it. A trump pair is worth about three to four loose trump; a joker or rank-card pair is worth more still; and two consecutive trump pairs (a trump tractor) add another premium on top, because breaking a tractor requires a higher tractor. Two hands of nine trump can be a full level apart in strength: 然后要加权。一个主牌对子约值三到四张散主牌；王或级牌的对子价值更高；而两个连续的主牌对子（主牌拖拉机）还要再加一层溢价，因为要压住拖拉机就必须用更大的拖拉机。同样是九张主牌，两手牌的强度可能差一整个档次：
Both hands hold exactly nine trump. Trump is spades, rank 2. 两手牌都恰好九张主牌。主牌为黑桃，级牌 2。
Hand A — all singles: 甲手——全是单张：
Hand B — the same nine cards' worth of length, but structured: 乙手——同样是九张，但有结构：
Verdict: Hand B is far stronger. It holds three pairs — and 10♤10♤ 9♤9♤ is a trump tractor, which nothing short of a higher trump tractor can beat. Hand B can ruff an opponent's pair, punish a pair-led trick and safely run trump; Hand A can only ever win single-card tricks. Faced with a choice between declaring a suit shaped like A and one shaped like B, declare B's — even if A were a card or two longer. 结论：乙手强得多。它有三个对子，而且 10♤10♤ 9♤9♤ 是一个主牌拖拉机，除非更大的主牌拖拉机，否则压不住。乙手能毙掉对手的对子、能惩罚对手领出的对牌、也能安全地走主；甲手则只能赢单张的轮次。如果要在“甲那样的花色”和“乙那样的花色”之间选一门亮主，就亮乙那门——哪怕甲还多一两张。
The bots bury with a strict priority order, and it is worth copying exactly: (1) complete a full side-suit void if one fits; (2) bury the lowest worthless cards from your shortest remaining suit; (3) add points only up to a budget set by your hand strength. Aces, trump, the rank card and pairs are off-limits — the sole exception being a pair that sits inside the suit you are voiding. 机器人扣底遵循严格的优先级，值得照搬：(1) 如果能扣光一整门副牌，就先扣光它；(2) 从剩下最短的花色里扣掉最小的废牌；(3) 只在手牌强度允许的“分数预算”内扣分牌。A、主牌、级牌和对子都不能扣——唯一的例外是这个对子正好落在你要扣光的那门花色里。
The point budget the bots use: 机器人使用的分数预算：
| Your hand你的手牌 | Points to bury可扣分数 |
| 4 jokers and 12+ trump四张王且 12+ 主牌 | as much as you like想扣多少扣多少 |
| 2+ jokers, or 12+ trump2+ 张王，或 12+ 主牌 | ~25 |
| 1 joker, or 10+ trump1 张王，或 10+ 主牌 | ~20 |
| 8–9 trump, no joker8–9 张主牌，无王 | ~15 |
| 6–7 trump6–7 张主牌 | ~10 |
| 5 or fewer trump5 张及以下主牌 | none不扣 |
You declared spades at rank 2 and now hold 25 cards. Bury 8. 你在级牌 2 时亮了黑桃，现在手上 25 张。要扣 8 张。
Trump (9): big joker, 2♤, 2♡, A♤ K♤ 10♤ 7♤ 5♤ 3♤ 主牌（9 张）：大王、2♤、2♡、A♤ K♤ 10♤ 7♤ 5♤ 3♤
Hearts (5): A♡ Q♡ J♡ 8♡ 4♡ · Diamonds (4): K♢ K♢ 9♢ 6♢ · Clubs (7): Q♧ 10♧ 9♧ 8♧ 7♧ 5♧ 3♧ 红桃（5 张）： A♡ Q♡ J♡ 8♡ 4♡ · 方块（4 张）： K♢ K♢ 9♢ 6♢ · 梅花（7 张）： Q♧ 10♧ 9♧ 8♧ 7♧ 5♧ 3♧
Why: you are now void in diamonds, so every
diamond led for the rest of the hand is a trump trick for you —
and with 9 trump you can afford them. The
K♢
pair costs 20 points, which is exactly the budget a hand with one
joker and nine trump allows, and those points are now
safe: they come back to you doubled if you take the last
trick, instead of being fought over in the middle game. This is
the one sanctioned reason to bury a pair.
The same hand, weaker:
swap the big joker for a low club and drop to six trump, and the
budget falls to 10 — the K♢ pair no longer
fits, so the void is not worth starting. Bury scattered trash
instead and play for denial.
理由：你现在方块缺门，此后每次有人打方块，对你来说都是一轮可以毙的牌——而你有
9 张主牌，完全支撑得住。那对 K♢ 花掉 20
分，恰好等于“一张王 +
九张主牌”这类手牌的预算上限；而且这些分现在是安全的：只要你赢下最后一轮，它们会以双倍回到你手上，而不必在中盘反复争夺。这正是唯一被认可的“可以扣对子”的理由。
同样的牌，若变弱：把大王换成一张小梅花、主牌降到六张，预算就只剩 10 分——那对
K♢
就装不下了，这个缺门也就不值得去做。此时应改为零散地扣废牌，专心打拦截。
This is the single most under-used play in the game, and it is the defenders' main mid-game weapon. Once you have cashed your winners and have nothing left worth leading, do not lead a big card. Lead a small, non-point trump — a 3♤ or 4♤. 这是全局中最被低估的一手，也是防守方中盘的主要武器。当你已经把大牌兑现完、手里没有值得领出的牌时，不要打大牌，而要领出一张小的、不带分的主牌——比如 3♤ 或 4♤。
It does three things at once: 它同时做到三件事：
Mid-game. You are defending. Your side-suit aces are spent, and you hold: big joker, 2♤, 9♤, 3♤, Q♡ J♡, 8♧. Your partner still holds a long club suit. 中盘，你是防守方。你的副牌 A 已经用完，手上剩：大王、2♤、9♤、3♤、Q♡ J♡、8♧。你的队友手上还有一长套梅花。
The rule: hand off with your smallest trump. Never with a joker, never with the rank card, and never with a trump that carries points — those are exactly the cards the hand-off is designed to preserve. 要点：过渡要用你最小的主牌。绝不要用王，绝不要用级牌，也绝不要用带分的主牌——这几张恰恰是这一手要保住的牌。
Holding seven of a side suit with no trump support feels like a dead hand. It is not — it is a weapon, if you are patient. Play the suit normally until both opponents are void in it, then throw the whole remaining holding at once. 手握某门副牌七张、又没有主牌支持，感觉像一手废牌。其实不然——只要有耐心，它就是武器。先按常规打这门牌，直到两名对手都缺了这门，然后把剩下的整套一次性甩出去。
To beat a throw, an opponent must beat every component of it individually, and only with trump. A throw containing two pairs therefore has to be answered with two trump pairs from a single player — which almost never happens. 要击败一次甩牌，对手必须逐一压过它的每一个组成部分，而且只能用主牌。因此，一个含有两个对子的甩牌，必须由同一名玩家拿出两个主牌对子才能压住——这几乎不可能发生。
Trump is spades. You have the lead. Both A♧s and both K♧s have already been played, and both opponents have shown themselves void in clubs by ruffing an earlier club trick. You still hold six clubs: 主牌是黑桃。你有领出权。两张 A♧ 和两张 K♧ 都已出完，而两名对手在此前的一轮梅花里都用主牌毙过，说明他们梅花已缺门。你手上还有六张梅花：
Timing is everything: a throw is only as good as your card counting. Wait until the suit's tops are gone and the opponents are void, then take the whole pot at once. 时机就是一切：甩牌的质量完全取决于你的记牌。等到这门花色的大牌都走完、并且对手都缺门，再一次性把整个彩池收走。
Every time a player fails to follow suit, that is permanent public information: they are void in it for the rest of the hand. The bots log every one of these, and so should you. Two tactics follow directly: 每当有人跟不上花色，这就是永久的公开信息：他这一局都缺这门。机器人会把每一次都记录下来，你也应该如此。由此直接引出两个战术：
Pairs are valuable, but not more valuable than 10 points. When you are void in the led suit and can discard anything, the correct discard is the one that gives the winning opponent the fewest points — even if it breaks a pair. 对子有价值，但没有 10 分值钱。当你缺了领出的那门花色、可以随便垫牌时，正确的选择永远是让赢家拿到最少分的那一手——哪怕要拆掉一个对子。
An opponent has led a pair of clubs and is winning the trick. You are void in clubs, so you may discard any two cards. Your non-trump holdings are K♡ 4♡ and 9♢ 9♢ 6♢. 对手领出一对梅花并且正赢着这一轮。你梅花缺门，因此可以任意垫两张。你的副牌是 K♡ 4♡ 和 9♢ 9♢ 6♢。
Flip it around when your partner is winning: then the K♡ is exactly the right discard. Partner-winning and opponent-winning are mirror images — the same cards, opposite answers. 队友赢着时则完全相反：那时 K♡ 正是该垫的牌。队友赢与对手赢是一体两面——同样的牌，答案完全相反。
The kitty is paid to whoever wins the last trick, multiplied by twice the size of the largest component of that trick's format. That multiplier is a lever most players never touch: 底牌归赢下最后一轮的一方，并按该轮牌型中最大组成部分张数的两倍计算倍数。多数玩家从来没想过要去动这个杠杆：
| Last trick was led as…最后一轮领出的牌型 | Kitty multiplier底牌倍数 |
| a single card单张 | ×2 |
| a pair对子 | ×4 |
| a tractor of two pairs两对连的拖拉机 | ×8 |
So a 20-point kitty is worth 40 to an attacker who wins the last trick with a single — but 160 to one who arranges to win it with a tractor. If you are attacking and you believe the declarer buried heavily, engineer the last trick: keep a trump pair back rather than a lone joker. 因此，一个 20 分的底牌，对用单张赢下最后一轮的进攻方来说值 40 分——而对能用拖拉机赢下最后一轮的人来说值 160 分。如果你是进攻方，并且判断庄家扣了重底，就要刻意去设计最后一轮：留一个主牌对子，而不是留一张光杆的王。
If you buried 10 points, the kitty is worth at least 20 to the other side. That sets your budget precisely: you may concede up to about 20 points elsewhere in order to guarantee you take the last trick. Conceding more than the kitty is worth means you have lost the trade — at that point, stop protecting it and fight for the points on the table instead. 如果你扣了 10 分，那么这个底牌对对方而言至少值 20 分。这就精确地定下了你的预算：为了确保拿下最后一轮，你最多可以在别处让出约 20 分。一旦让出的分超过底牌本身的价值，这笔交易就亏了——那就别再守底，转而去争台面上的分。
All bots except Omniscient are strictly honest — they only ever see their own hand and the public play history, exactly like you. Knowing how each one thinks tells you how to beat it. 除 Omniscient 之外，所有机器人都是严格诚实的——它们只能看到自己的手牌和公开的出牌记录，和你完全一样。了解它们各自的思路，就知道该怎么打败它们。
| Tier难度 | How it plays / how to beat it打法特点 / 破解思路 |
| Easy | Plays the basic heuristic noisily, with occasional deliberate blunders and no card memory. Punish it by running long suits — it will not track what has gone. 按基础启发式打，但带噪声，会偶尔故意失误，且完全不记牌。用长套硬走就能惩罚它——它不会记住哪些牌已经出过。 |
| Expert | A neural net trained on the strongest teacher, used as the prior for a short search. Solid and unexciting; beat it with the tempo plays above — the hand-off and the long-suit throw. 以最强教师蒸馏出的神经网络作为先验，再配一段短搜索。稳健但缺乏亮点；用上文的节奏打法——小主牌过渡与长套甩牌——来击败它。 |
| Enoch | Plays this guide, essentially. Perfect card memory, strict discipline: it never opens with a joker, always dumps points to a winning partner, hands off with low trump. That consistency is also readable — you can predict its next move, and set traps that its playbook will walk into. 基本上就是照着本指南打。记牌完美、纪律严格：从不用王领出，队友赢着就一定垫分，过渡一定用小主牌。这种一致性同时也意味着可读——你可以预判它的下一手，并布下它的手册一定会踩进去的陷阱。 |
| Grandmaster | The strongest honest tier. It uses the playbook only to propose moves, then simulates each one to the end of the hand and plays whatever the simulations rate highest — so it will break the playbook's instincts when the calculation disagrees. Do not expect it to be predictable. 最强的诚实难度。它只用手册来提出候选着法，然后把每一手模拟到本局结束，最终选择模拟评价最高的那一手——因此当计算与直觉冲突时，它会毫不犹豫地违背手册。别指望能预判它。 |
| Omniscient | Sees every hand. It is a practice target, not a fair opponent — and it is badged as a cheater in the lobby for exactly that reason. 能看到所有人的手牌。它是练习用的靶子，不是公平的对手——大厅里也正因如此把它明确标注为“作弊”。 |
The ✨ button on your turn asks the server for the move the Grandmaster tier would make from your seat. It is computed only from what you are allowed to see, so it never leaks a hidden card — it is a second opinion, not an oracle. 轮到你时出现的 ✨ 按钮，会向服务器询问 Grandmaster 难度在你这个位置会怎么打。它只根据你有权看到的信息计算，绝不会泄露任何暗牌——它是第二意见，而不是天机。