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Kanchan: Difference between revisions
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A ryankan is effectively the same as having 2 different kanchans; it waits for 8 tiles of two types (4 tiles per type). | A ryankan is effectively the same as having 2 different kanchans; it waits for 8 tiles of two types (4 tiles per type). | ||
However, | However, a hand cannot enter tenpai with a ryankan. If it would reach tenpai without completing the ryankan, one of its three tiles would need to be discarded, turning it back into a weak kanchan wait. | ||
Example hand with ryankan shape: | Example hand with ryankan shape: | ||
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{{#mjt:12344m23789p246s}} | {{#mjt:12344m23789p246s}} | ||
With the example hand above, | With the example hand above, after drawing {{#mjt:1p}}, either {{#mjt:2s}} or {{#mjt:6s}} would to need to be discarded to enter tenpai. The hand ends up with a bad wait, but with one significant advantage - a ryankan always forms a [[Suji#Offense|suji trap]]. Here, if 6s was discarded, the hand waits on the suji 3s, thus making it more likely for others to deal in. This is why a suji of the [[riichi]] declaration tile is considered more dangerous. | ||
===Inner vs Outer Kanchan=== | ===Inner vs Outer Kanchan=== | ||
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*A {{#mjt:24p}} kanchan can only be upgraded by drawing {{#mjt:5p}} (turning into {{#mjt:45p}}). It can be turned into a ryankan when drawing {{#mjt:6p}} only. | *A {{#mjt:24p}} kanchan can only be upgraded by drawing {{#mjt:5p}} (turning into {{#mjt:45p}}). It can be turned into a ryankan when drawing {{#mjt:6p}} only. | ||
An inner kanchan can be upgraded | An inner kanchan can be upgraded with twice the amount of tiles, so inner kanchans are overall stronger. Note, though, that an inner kanchan waits on a middle tile. As middle tiles are harder to win with, an inner kanchan is worse to keep at [[tenpai]] than an outer one. | ||
===Kanchan vs Penchan=== | ===Kanchan vs Penchan=== | ||
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*A {{#mjt:12p}} penchan cannot be upgraded to ryanmen on its own. It must first draw a {{#mjt:4p}}, turning it into a {{#mjt:24p}} kanchan, then draw the {{#mjt:5p}} to get a ryanmen. | *A {{#mjt:12p}} penchan cannot be upgraded to ryanmen on its own. It must first draw a {{#mjt:4p}}, turning it into a {{#mjt:24p}} kanchan, then draw the {{#mjt:5p}} to get a ryanmen. | ||
As a kanchan requires 1 drawn tile to be upgraded to a ryanmen, but a penchan requires 2 drawn tiles, the kanchan is superior to keep before tenpai. In addition, only a kanchan can be turned into a [[#Ryankan|ryankan]] shape, adding another advantage. However, once | As a kanchan requires 1 drawn tile to be upgraded to a ryanmen, but a penchan requires 2 drawn tiles, the kanchan is superior to keep before tenpai. In addition, only a kanchan can be turned into a [[#Ryankan|ryankan]] shape, adding another advantage. However, once in tenpai, both kanchan and penchan become effectively identical. | ||
==External links== | ==External links== | ||