Two Concealed Kongs

What Is Two Concealed Kongs

Two Concealed Kongs in Chinese Mahjong is a 6-fan pattern requiring that you fully self-draw two different sets of four identical tiles in your winning hand. It provides a large score boost and can combine with other pung- or honor-based patterns to create formidable totals. However, relying on pure draws to collect eight matching tiles (two sets of four) is inherently luck-heavy. Keep track of tile availability, weigh the pros and cons of risking a slower approach, and stay ready to pivot if the necessary tiles appear in discards or opponents’ melds. If luck and strategy align, Two Concealed Kongs can deliver an impressive payoff.

The Tile Pattern of Two Concealed Kongs

Two Distinct Concealed Kongs

• You need two different sets of four identical tiles, each one created by your own draws.
• For each kong, no tile can come from an opponent’s discard. If you had a concealed pung and then drew the fourth tile yourself, that also qualifies as a concealed kong.

Example

• Concealed Kong of 7 Dots (all drawn, or upgraded from a concealed pung)
• Concealed Kong of Red Dragons (again, entirely self-drawn)
• Plus two more sets (chow or pung/kong) and one pair to complete the hand structure.

Fan Value of Two Concealed Kongs

Under standard Chinese Mahjong rules, Two Concealed Kongs is worth 6 fan. This is quite substantial, reflecting the difficulty of drawing all four copies of two separate tiles entirely on your own.

Strategies and Considerations of Two Concealed Kongs

High Fan Reward (6 Fan): Gathering two fully self-drawn kongs yields a large scoring bonus. If you add in other patterns—like All Pungs, seat wind pungs, or dragon pungs—the final score can be extremely high.

Preserved Concealment: Concealed kongs (unlike melded kongs) do not turn your hand into an open hand, so you remain eligible for patterns like Concealed Hand or even Fully Concealed Hand, if your final winning tile is also self-drawn.

Rarity / Dependence on Luck: Drawing all four copies of one tile can be challenging; doing it twice in the same hand is quite rare. If multiple copies of your target tiles appear in opponents’ melds or discards, forming two concealed kongs becomes impossible.

Timing and Information Leakage: Although a concealed kong remains “concealed,” other players will know that you declared a kong of some tile (they just won’t see which specific tile it is). This tells them you have removed all four copies of that tile from circulation.

Potential Overcommitment: If you aggressively aim for two concealed kongs but do not draw the critical tiles, you risk falling behind faster opponents. Balance the desire for a big 6-fan payoff with the practicality of completing your hand.

Monitor Discards: Ensure your critical tiles are not showing up in others’ discards or melds. If too many copies of a tile you need appear on the table, pivot away from that intended concealed kong.

Flexible Melds: Even if you start with pairs or pung potentials, keep your eyes open for the possibility that you might upgrade from a concealed pung to a concealed kong. However, do not force it if the fourth tile never arrives.

Combine with Pung-Focused Patterns: Two concealed kongs can naturally fit into an All Pungs hand, which alone is worth 6 fan. If your entire hand is pung-based (or you have other pungs/kongs with special honor tiles), you can stack multiple bonuses.

Concealed vs. Melded: If you have a pung and see the fourth tile discarded, you might be tempted to meld it into a melded kong—but that forfeits the chance at a concealed kong. Decide if the extra immediate advantage is worth losing the high 6-fan pattern.