What is Double Yakuman? 2x Yakuman Points and Types Explained for Beginners

What is Double Yakuman?

Double Yakuman (ダブル役満) refers to special yakuman in mahjong that award twice the points of regular yakuman. It’s recognized for particularly difficult yakuman forms or when achieving two yakuman simultaneously.

With astronomical points of 96,000 for dealer (32,000 all) or 64,000 for non-dealer, it truly represents the pinnacle of mahjong. However, adoption depends on the ruleset.

Detailed Explanation of Double Yakuman

Types of Double Yakuman

Double yakuman broadly falls into two patterns:

Point Calculation

Double yakuman points:

Usage Examples

Real Game Situations

Example 1: Achievement Declaration

"Double yakuman!"
"Suuankou tanki, double!"

Example 2: Combination Yakuman

"Tsuuiisou daisangen, double yakuman!"
"Suushiihou tsuuiisou!"

Example 3: Rules Confirmation

"Do we play with double yakuman?"
"Is junsei chuuren treated as double?"

Representative Double Yakuman

1. Suuankou Tanki (Four Concealed Triplets Single Wait)

Most famous double yakuman:

Form: 4 concealed triplets + tanki wait
Example: :2m::2m::2m: :5p::5p::5p: :8p::8p::8p: :9s::9s::9s: waiting :4s:
Reason: Highest difficulty form of suuankou

2. Junsei Chuuren Poutou (Pure Nine Gates Nine-Sided)

Beautiful 9-sided wait:

Form: 1112345678999 with 9-sided wait
Example: :1m::1m::1m::2m::3m::4m::5m::6m::7m::8m::9m::9m::9m: (waiting any 1-9)
Reason: Ultimate form of chuuren poutou

3. Daisuushii (Big Four Winds)

All winds as triplets:

Form: All East-South-West-North as triplets
Example: :1z::1z::1z: :2z::2z::2z: :3z::3z::3z: :4z::4z::4z: :5s::5s:
Reason: Yakuman itself is high difficulty (by rules)

4. Kokushi Musou Juusanmen (Thirteen Orphans 13-Wait)

13-sided wait kokushi:

Form: All 13 yaochuuhai types with 13-sided wait
Example: :1m::9m::1p::9p::1s::9s::1z::2z::3z::4z::5z::6z::7z: (waiting any)
Reason: Highest form of kokushi (by rules)

Double by Yakuman Combination

Combinable Pairs

Simultaneously established yakuman:

Combination Cautions

Combinations that don’t work:

1. Inclusion relationships

   • Daisangen and shousangen (dai includes shou)
   • Daisuushii and shousuushii (dai includes shou)

2. Contradictory conditions

   • Chuuren poutou and tsuuiisou (different suit types)
   • Kokushi musou and other yakuman (special form)

Related Terms

• Yakuman: Highest scoring hands
• Suuankou Tanki: Suuankou with tanki wait
• Junsei Chuuren Poutou: 9-sided chuuren
• Daisuushii: 4 wind triplets yakuman
• Triple Yakuman: 3x yakuman (extremely rare)

Common Mistakes and Points to Note

Points Beginners Often Mistake

1. Insufficient rules confirmation

   • Many rulesets don’t adopt double yakuman
   • Always confirm beforehand
   • Online depends on settings

2. Combination misunderstandings

   • Not all yakuman can combine
   • Watch for inclusion relationships
   • Formal overlaps don’t count

3. Point calculation errors

   • Always exactly 2x
   • Honba sticks also 2x
   • All riichi deposits taken

4. Specific form misconceptions

   • Suuankou with shanpon wait is single
   • Chuuren only double with 9-sided wait
   • Understand conditions precisely

Value of Double Yakuman

Position in Mahjong World

Meaning of achievement:

Occurrence Rate

Statistical data:

• Single yakuman: About 0.2%
• Double yakuman: About 0.002%
• Triple yakuman: About 0.00001%

Strategy for Aiming at Double Yakuman

Realistic Approach

Basic aiming method:

1. Suuankou tanki

   • Starting hand with many pairs
   • Avoid shanpon
   • Adjust toward tanki

2. Junsei chuuren poutou

   • Develop from chinitsu
   • Secure three 1s and 9s
   • One each of 2-8

3. Yakuman combination

   • Base on tsuuiisou
   • Daisangen or suushiihou
   • Explore possibilities

Mindset

Path to double yakuman:

• Don’t overreach
• When chance comes, go all in
• Regular yakuman is already great
• Enjoy the game

Local Rules

Regional Differences

Treatment of double yakuman:

Special Double Yakuman

Regional limited examples:

1. Hachirenchan

   • Dealer continues 8 consecutive times
   • Extremely rare
   • Only some regions

2. Renhou double

   • Non-dealer’s first turn ron
   • In regions treating it as yakuman
   • With additional conditions

Double Yakuman Legends

Famous Records

Moments passed down:

• Achievement in pro matches
• Starting hand suuankou tanki
• Miraculous yakuman combinations
• Moments captured on video

Achievers’ Testimonies

Common themes in experiences:

1. Unbelievable feeling
2. Hands shaking with excitement
3. Surrounding amazement
4. Memory for life

Conclusion

Double yakuman is the pinnacle of mahjong, earning twice the points of regular yakuman. Established through specific forms like suuankou tanki or junsei chuuren poutou, or through yakuman combinations. With an extremely low occurrence rate of about 0.002%, it’s a miracle you may experience once in a lifetime, if at all. For beginners, first understand regular yakuman, then hold knowledge of double yakuman’s existence. Double yakuman symbolizes mahjong’s infinite possibilities and ultimate excitement, representing the absolute peak.