Matagi suji: Difference between revisions

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'''Matagi suji''' is a specific [[suji]] read that examines tiles near numbered tiles.  It can be referred as "straddle suji".  For numbers 3-7, they point to numbered tiles -2 or +2 away from them. For 2 and 8, they point to tiles 1-4 and 6-9 respectively.
'''Matagi suji''', or "straddle suji", is a form of [[discard]] reading. It states that, when a number tile is discarded early, nearby tiles become safer.
* When a tile numbered 3-7 is discarded, the tiles +/- 2 away become safer.
* When a tile numbered 2 or 8 is discarded, the 1-4 or 6-9 become safer, respectively.


==Table==
==Table==
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==Usage==
==Theory==
The concept behind matagi suji considers a discarded tile as an interior tile to a waiting [[shuntsu|sequence]] in the hand. The idea may not be applicable to early discards, particularly first row. Players may not be [[tenpai]] at that point.  Regarding [[tile efficiency]], tiles discarded later may indicate potential tenpai shapes.  They were kept long enough until no longer needed because of favorable draws.
Matagi suji relies on the power of a shape like "223" or "334". When a player has a 233 in hand, it is unlikely that they would discard a 3 early, since it would come at a loss of [[tile efficiency]]. Therefore, if an opponent discards a 3 early, it is unlikely that they have an incomplete "23" remaining in hand. Therefore, it's less likely for them to have a wait on 2 or 5 of that suit (since "23" waits on 1-4).
 
Tiles towards the outside of a discarded tile are much safer than those towards the inside. For example, after an opponent discards a 3, a 1 is safer than 5. This is because middle tiles are more dangerous; if an opponent discards a 3, they could still be holding a "67" [[ryanmen]], waiting on a 5.


==External links==
==External links==
* [https://www.mahjonggem.com/blog/2019/6/12/matagi-suji Matagi suji] on Mahjong Gem
* [https://www.mahjonggem.com/blog/2019/6/12/matagi-suji Matagi suji] on Mahjong Gem
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