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Riichi strategy: Difference between revisions
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=== Speed === | === Speed === | ||
[[Image:Intimidate riichi.png|thumb|right|250px|[http://tenhou.net/0/?log=2016081218gm-0029-0000-bcaa7251&tw=1&ts=14 Riichi called] to apply pressure onto the other players, with relatively low scoring differentials.]] | [[Image:Intimidate riichi.png|thumb|right|250px|[http://tenhou.net/0/?log=2016081218gm-0029-0000-bcaa7251&tw=1&ts=14 Riichi called] to apply pressure onto the other players, with relatively low scoring differentials.]] | ||
There is an advantage to being the first to tenpai, and thus an advantage to being the first to declare riichi. Only one hand can win per round, so faster hands can just win before anyone else. A tenpai hand can call ron off anyone, while [[chii]] can only be called from the left player. Also, the earlier you declare riichi, the | There is an advantage to being the first to tenpai, and thus an advantage to being the first to declare riichi. Only one hand can win per round, so faster hands can just win before anyone else. A tenpai hand can call ron off anyone, while [[chii]] can only be called from the left player. Also, the earlier you declare riichi, the harder it is for opponents to defend against it. | ||
In addition, going from [[iishanten]] to tenpai can take a while. Even with great [[ukeire|tile acceptance]], | In addition, going from [[iishanten]] to tenpai can take a while. Even with great [[ukeire|tile acceptance]], it often takes multiple turns to do achieve tenpai. (Of course, this is dependent on luck.) | ||
*If an iishanten opponent decides to attack into your riichi, you have the speed advantage. | *If an iishanten opponent decides to attack into your riichi, you have the speed advantage. As mentioned above, they will often need to spend multiple turns to reach tenpai. Therefore, they may need to spend multiple turns discarding dangerous tiles, which could be tiles you could ron off of. You could also tsumo before they reach tenpai, or win after they get tenpai. | ||
*If an opponent at iishanten decides to fold, you will have one less player to worry about. | *If an opponent at iishanten decides to fold, you will have one less player to worry about. | ||
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Since most of the risks of riichi only apply if the hand fails to win, having a good wait means that riichi is more desirable. Bad shape waits may be more pressured to keep the possibility of failure in mind, as well as the possibility of changing the hand into having a better wait. | Since most of the risks of riichi only apply if the hand fails to win, having a good wait means that riichi is more desirable. Bad shape waits may be more pressured to keep the possibility of failure in mind, as well as the possibility of changing the hand into having a better wait. | ||
If you are in [[furiten]], you should be more wary about riichi. A furiten riichi with a 3-sided wait or better is typically ok. A furiten two-sided wait may work if it's early in the game. | |||
=== Score === | === Score === | ||
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{{#mjt: 123m345p888p4449s}} Waiting for: {{#mjt: 9s}} | {{#mjt: 123m345p888p4449s}} Waiting for: {{#mjt: 9s}} | ||
You could upgrade the hand to a two-sided or better wait with: {{#mjt: 14m235679p2356s}}, which is up to 48 tiles. When considering the number of upgrades, you should consider every visible tile. You must also | You could upgrade the hand to a two-sided or better wait with: {{#mjt: 14m235679p2356s}}, which is up to 48 tiles. When considering the number of upgrades, you should consider every visible tile. You must also watch out for [[furiten]]. | ||
As the round progresses, you should be more willing to riichi than to wait for an upgrade; you don't have as much time to wait for an upgrade. | As the round progresses, you should be more willing to riichi than to wait for an upgrade; you don't have as much time to wait for an upgrade. | ||
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First, damaten has better control over [[yasume]]. If a riichi hand wins off a bad wait, you have to accept it or enter furiten. However, since riichi adds an average of around 1.5 han, this is only an issue if the waits differ by 3+ han. Even then, you may want to riichi despite this. | First, damaten has better control over [[yasume]]. If a riichi hand wins off a bad wait, you have to accept it or enter furiten. However, since riichi adds an average of around 1.5 han, this is only an issue if the waits differ by 3+ han. Even then, you may want to riichi despite this. | ||
Second, a damaten hand can try and target a specific player. You may want to ron to get a player below 0 points, ending the game immediately. Or you may wish to avoid calling ron on a player with 0 points, to not end the game. This can also be done to [[gyakuten|change placement]] (e.g. targeting 1st place as 2nd). However, since riichi gives a hefty point bonus, | Second, a damaten hand can try and target a specific player. You may want to ron to get a player below 0 points, ending the game immediately. Or you may wish to avoid calling ron on a player with 0 points, to not end the game. This can also be done to [[gyakuten|change placement]] (e.g. targeting 1st place as 2nd). However, since riichi gives a hefty point bonus, a riichi hand might improve your placement even if you tsumo or ron the "wrong" player. | ||
=== Game round === | === Game round === | ||