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Matagi suji: Difference between revisions
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==Theory== | ==Theory== | ||
Matagi suji relies on the power of a shape like "233" or "334". When a player has a "233", it is unlikely for them to discard a 3 early - turning "233" -> "23" - since it'd come at a loss of [[tile efficiency]]. So if a 3 is discarded early, it is less likely for them to have "23" (which waits on 1-4) or "34" (which waits on 2-5) remaining. | Matagi suji relies on the power of a shape like "233" or "334". When a player has a "233", it is unlikely for them to discard a 3 early - turning "233" -> "23" - since it'd come at a loss of [[tile efficiency]]. So if a 3 is discarded early, it is less likely for them to have "23" (which waits on 1-4) or "34" (which waits on 2-5) remaining. Therefore, an early discarded 3 makes both 1-4 and 2-5 safer. Note: tiles towards the outside of a discarded tile (1 & 2 in this case) are ''much'' safer; tiles towards the inside are not much safer than a regular tile. | ||
Conversely, it is more likely for a player to keep shapes like "233" until [[tenpai]]. So if a 3 is discarded | Conversely, it is more likely for a player to keep shapes like "233" until just before [[tenpai]]. So if a 3 is discarded as the [[riichi]] declaration tile, it is more likely for them to have a "23" or "34" remaining. This means a late discarded 3 makes 1-4 and 2-5 more dangerous. | ||
Note: if the riichi declaration tile was a tsumogiri tile (discarded right after drawing it), then number tiles around the last tedashi (discarded from hand) tile are dangerous instead. | Note: if the riichi declaration tile was a tsumogiri tile (discarded right after drawing it), then number tiles around the last tedashi (discarded from hand) tile are dangerous instead. | ||
===Effectiveness=== | ===Effectiveness=== | ||
"Tiles nearby the riichi declaration tile" are more dangerous. But, when [[fold]]ing, there usually isn't a need to consider matagi suji. A 4 discarded as a riichi declaration does make the 5 more dangerous, but a non-suji 5 is already very dangerous. It can make an impact when deciding whether to push or fold | "Tiles nearby the riichi declaration tile" are more dangerous. But, when [[fold]]ing, there usually isn't a need to consider matagi suji. A 4 discarded as a riichi declaration does make the 5 more dangerous, but a non-suji 5 is already very dangerous. It can make an impact when deciding whether to push or fold, though. | ||
"Tiles outside of early discards" are relatively safe; about as safe as regular [[suji]] (but a bit less safe). | "Tiles outside of early discards" are relatively safe; about as safe as regular [[suji]] (but a bit less safe). | ||