The following tips and strategies were originally published by the World Series of Mahjong (2018) and archived via the Wayback Machine. The Zung Jung Movement has compiled and lightly edited this material for clarity and accessibility.

1.0 Basic Strategy

1.1 Six Core Patterns 

Zung Jung Mahjong uses a pattern-based scoring system and does not award base points simply for winning a hand. The value of a winning hand is intended to reflect its complexity and aesthetic structure. Consistently pursuing fast, low-value hands is insufficient to keep pace with higher-scoring opponents; players must capitalize on opportunities to complete more valuable hands.

The six core patterns—Half Flush, All Triplets, Three Similar Sequences, Nine-Tile Straight, Half Outside Hand, and Seven Pairs—typically yield scores between 30 and 40 points and are relatively common. These patterns carry substantially more weight than 5 and 10-point patterns. This creates a structure similar to Hong Kong Style, where play emphasizes forming distinct high-value patterns, rather than aggregating numerous low-value ones. The result is a clearer separation between large and small hands and increased competitive interaction.

In addition to these core patterns, there are higher-value patterns, but they occur less frequently. However, when an opportunity to create one of these patterns arises, one should strongly consider pursuing it.

1.2 Small Hands 

The primary function of small hands is to disrupt opponents’ attempts at higher-value hands. It is generally inefficient to delay completion solely to add a 5 or 10-point pattern to one’s hand. In practice, however, small patterns can often be pursued with minimal impact on speed. While 5 points is marginal, 10 points represent a meaningful increment, and these gains accumulate over multiple hands.

The tournament formats of ZJM Competition Rules emphasize plus/minus scoring. When holding a positive score, players may prioritize faster hands to protect their position. However, higher-scoring outcomes are also rewarded, so optimal strategy remains situational.

1.3 Don’t Deal into Big Hands 

Paying attention to opponents’ hands is important. When dealing into a small hand (worth 25 points or less) the payment to the winner is split evenly among all players. However, one bears the largest portion of the payment for discarding into hands with scores above 25 points. Losses on 30–40 point hands remain relatively manageable, as the payments from other players are still proportionate to your own. For example, if you deal into a 30-point hand, the winner receives 40 points from you and 25 points from each of the two other players. However, the penalties escalate quickly with higher-value hands: a 60-point hand results in a payment of 130, and an 80-point hand, such as a Full Flush, results in a payment of 190. By contrast, if another player deals into the win, your loss is limited to 25 points, and even an 80-point self-draw results in a significantly smaller payment than dealing into a large hand. A single misjudged discard can therefore be extremely costly, and large losses are often difficult to recover from.

High-value hands may remain concealed or show only a single exposed set. These hands cannot be reliably identified from exposed tiles alone; careful analysis of discard patterns is required. For example, an Outside Hand often begins by discarding middle tiles (4–5–6) early in the round.

1.4 Combinations of Core Patterns 

Some hands combine two core patterns to form an 80-point class hand. Common examples include Half/Full Outside Hand + Three Similar Sequences, Half Flush + Nine-Tile Straight, and Half Flush + All Triplets. Dealing into an 80-point hand results in a 190-point loss, which is often decisive and should be avoided. Conversely, completing such a hand yields a substantial reward. Players should remain attentive to opportunities for overlapping patterns, as focusing too narrowly on one pattern may lead to missing another.

2.0 In-depth Strategy

2.1 Offense and Defense 

Player interaction is essential. A player who focuses only on their own hand will remain at a novice level. In Hong Kong Style, fast, low-value hands often dominate, making it difficult to pursue larger hands; players frequently compete for small wins instead. Zung Jung Mahjong follows similar underlying rules, so the same pressure from speed can limit opportunities for high-value hands.

However, the greater scoring gap between large and small hands in this system makes it more worthwhile to pursue high-value hands. Winning a small hand against another small hand produces only a limited score swing, whereas a successful large hand can create a decisive advantage. Additionally, the inclusion of “New Style” patterns increases the availability of viable high-value paths. Selecting patterns that align well with the current tiles improves the likelihood of completing such hands.

Pursuing a high-value hand typically requires sacrificing speed and immediate win probability in exchange for a larger payoff. This tradeoff gives opponents additional time and opportunities to complete their own hands. From a purely expected-value perspective, the significant difference in scoring often favors attempting a large hand. However, this must be balanced against the increased risk of conceding points if an opponent wins first.

If an opponent is developing a hand that is both faster and higher in value, pursuing a large hand becomes high risk. When opponents are focused on small hands, attempting a big hand carries less risk; however, visible indications of a large opposing hand require increased caution. If a player can realistically outpace or outvalue the opponent, committing to a high-value hand may be justified; otherwise, prioritizing speed is more appropriate. Effective offense and defense depend on accurate assessment of all players’ hands—their speed, potential value, and relative position compared to one’s own. 

2.2 Two Identical Sequences 

Two Identical Sequences is a highly versatile pattern that combines effectively with others. It commonly pairs with Category 1 patterns—such as All Sequences, Concealed Hand, and All Simples—to produce hands in the 15–25 point range. It is often preferable to secure a fast win with Two Identical Sequences rather than risk pursuing a core pattern because it combines efficiently with Category 1 patterns and often yields a solid score.  However, Two Identical Sequences can also combine with higher-value patterns such as Three Similar Sequences, Nine-Tile Straight, Outside Hand, and Half or Full Flush. In some cases, it can be extended into higher series patterns, including Pair of Two Identical Sequences or Three Identical Sequences, or converted into Three Consecutive Triplets by forming triplets.

By contrast, Value Honor has far fewer combination pathways. It typically pairs with Half Flush, All Triplets, or Half Outside Hand, and may gain a small increase by forming a quad, but it does not integrate as flexibly with other patterns.

2.3 Value Honors 

Compared to some other styles, Value Honor is relatively strong, as 10 points exceeds the value of a trivial pattern. While a standalone 10-point hand is efficient, combining Value Honor with core patterns—such as Half Flush, All Triplets, or Half Outside Hand—raises the total value by roughly 25%. With two Value Honor triplets, the increase approaches 50%, which is substantial.

Conversely, drawing a suspicious raw—or semi-raw—Value Honor tile late in the hand against an opponent who appears to be building a large hand requires caution. Discarding a Guest Wind into a 40-point hand results in a 70-point loss, whereas discarding a Value Honor into a 50-point hand results in a 100-point loss, a significantly greater penalty. If the opponent is not developing a large hand, the additional 10 points from the Value Honor are shared among the other players, making the risk less consequential.

Once a pair of Value Honors is formed, the standard approach is to wait to pung it. An exception arises when the pair is needed as the eyes for a higher-value hand, such as Half Outside Hand. With a single unmatched Value Honor, the decision is whether to retain or discard it. Discarding carries the risk of later drawing additional copies, while keeping it may reduce speed.

When pursuing hands such as Half Flush or Half Outside Hand, honors should generally be retained regardless of whether they are Value Honors. Otherwise, the decision should consider whether discarding the honor enables trivial patterns (eliminating the need to keep it) and the extent to which retaining it would slow hand development.

In the early game, after discarding Guest Winds and terminal tiles, it is generally advisable to discard Value Honors that have already appeared in other players’ discards. Generally, Dragon tiles should be discarded before one’s Seat Wind, since one’s Seat Wind has no value for other players; a lack of prior discards suggests those tiles are still available in the wall, increasing the likelihood of drawing them. Additionally, if a Seat Wind tile is retained into the later stages of the hand, it remains a relatively safer discard compared to other options.

3.0 Other Strategy Resources

Alan Kwan once wrote a document about strategy in Zung Jung on the defunct website Mahjong News. That article is now accessible via the Wayback Machine.

In case the link does not work, here a PDF file of the article:

The fansite zungjungmahjong.com offers articles about strategy. The San Diego Mahjong Club offers a strategy guide in the Game Catalog and publishes articles about Mahjong strategy.