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[[Image:Damaten.png|250px|right|thumb|Damaten applied to a standalone baiman hand. [http://tenhou.net/0/?log=2014070418gm-0089-0000-092c00f3&tw=2]]] | [[Image:Damaten.png|250px|right|thumb|Damaten applied to a standalone baiman hand. [http://tenhou.net/0/?log=2014070418gm-0089-0000-092c00f3&tw=2]]] | ||
'''Damaten''' {{kana|黙聴}} (or "hidden tenpai") is a closed [[tenpai]] hand that has not called [[riichi]]. Typically, a dama hand will have a [[yaku]] without riichi; otherwise, [[menzen tsumo]] (or another circumstantial yaku) would be needed to win. An older term '''yamiten''' {{kana|闇聴}} refers to the same thing. | '''Damaten''' {{kana|黙聴}} (or "hidden tenpai") is a closed [[tenpai]] hand that has not called [[riichi]]. Typically, a dama hand will have a [[yaku]] without needing to riichi; otherwise, [[menzen tsumo]] (or another circumstantial yaku) would be needed to win. An older term '''yamiten''' {{kana|闇聴}} refers to the same thing. | ||
==Usage== | ==Usage== | ||
There are many reasons to dama. In most cases, it's when the extra points do not matter: | There are many reasons to dama. In most cases, it's when the extra points from riichi do not matter: | ||
*When the call for riichi wouldn't increase the hand's value by itself. For example, a [[haneman]] is scored if you have 6-7 han. If you have an 6 han hand, the +1 han for riichi wouldn't increase the score. Declaring riichi could still increase score with a tsumo, ippatsu, and/or ura dora, but these aren't reliable. | *When the call for riichi wouldn't increase the hand's value by itself. For example, a [[haneman]] is scored if you have 6-7 han. If you have an 6 han hand, the +1 han for riichi wouldn't increase the score. Declaring riichi could still increase score with a tsumo, ippatsu, and/or ura dora, but these aren't reliable. | ||
*When the hand is valuable. Because players will often [[defense|defend]] against a riichi hand, declaring riichi will generally lower your hand's win rate. So if your hand is already a guaranteed [[mangan]] or higher, you may wish to dama to get the existing value. Plus, once mangan is reached, each han afterwards has reduced value. | *When the hand is valuable. Because players will often [[defense|defend]] against a riichi hand, declaring riichi will generally lower your hand's win rate. So if your hand is already a guaranteed [[mangan]] or higher, you may wish to dama to get the existing value. Plus, once mangan is reached, each han afterwards has reduced value. | ||