Suji

Lisez les chiffres à l'horizontale.

Les suji 「筋」, ou fourchettes, dérivent du principe à utiliser le concept d'intervalles propres au mah-jong. Ceci s'applique pour les trois couleurs du jeu, que ce soit les bambous, les sapèques (ou ronds), ou les manzu. Les couleurs étant numérotés de 1 à 9, ils peuvent être arrangés en forme carrée pour surligner les intervalles. La raison d'être des suji est de pouvoir déduire et déterminer les tuiles attendues par les adversaires ayant souvent la forme d'attentes ouvertes. Les intervalles eux-mêmes sont basés sur le fait que les suites ont une longueur de 3. Les tuiles notées sur les intervalles marquent les tuiles typiquement attendues pour compléter ces séquences. En lisant horizontalement, les trois grandes intervalles sont le 1-4-7, le 2-5-8, et le 3-6-9. Évidemment, les grandes intervalles donnent naissance aux petits, tels que le 1-4 et le 4-7, le 2-5 et le 5-8, le 3-6 et le 6-9.

Intervals

The intervals for suji apply to any of the numbered suits. Nine types of intervals are available. For these examples, each of the three suits are used; but they apply to all of them. Four tile patterns particularly utilize these intervals: ryanmen, ryanmenten, nobetan, and sanmentan. In the following table, only the first two are examined.

Middle tiles	Waiting for	Interval name	Completion
Two-sided, or Ryanmen
		1-4, or Iisuu 「イースー」	or
		2-5, or Ryanuu 「リャンウー」	or
		3-6, or Sabukou 「サブロー」	or
		4-7, or Suuchii 「スーチー」	or
		5-8, or Uubbaa 「ウッパー」	or
		6-9, or Roukyuu 「ローキュー」	or
Three-sided, or Ryanmenten
		1-4-7, or Iisuuchii 「イースーチー」	and OR and OR and
		2-5-8, or Ryanuubaa 「リャンウッパー」	and OR and OR and
		3-6-9, or Sabukoukyuu 「サブローキュー」	and OR and OR and

The left column shows tiles that may appear in a player's hand, while the middle tiles show the tiles needed in order to complete a needed tile group. The recognition makes it helpful to identify waiting tiles by association. In the case of these waiting patterns, if a hand is waiting for one tile, it is likely waiting for another tile in the interval. Even if these take on Japanese names, they are simply the numbers. Finally, the end result shows the the waiting tiles as the completed tile grouping(s).

Défense

Defending using suji essentially presumes a player to be utilizing either the wait pattern of ryanmen, ryanmenten, nobetan, sanmentan, or some other variation. Under the rule of furiten, if a player discarded a waiting tile, then the player's ability to call "ron" is disabled. Therefore, certain tile discards may rule out certain mahjong intervals.

Of course, one should not be necessarily dependent on these intervals alone, as some waiting patterns are immune to suji.

Attaque

Fichier:Suji Trap.png

5-pin discarded to indicate 2-pin or 8-pin as potentially safe, when the 8 is not.

The strategy of suji may be used offensively. By utilizing suji in reverse, a player may use a tile within an interval to lure out a winning tile along the same interval. A defending player may presume a certain tile to be safe by suji, when it is actually not. This is commonly known as the "suji trap".

External links

• 筋_(麻雀)

Suji sur la Wikipédia japonaise