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Tile efficiency: Difference between revisions
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==Basic Theory== | ==Basic Theory== | ||
===Five-block theory=== | ===Five-block theory=== | ||
"Five-block theory" states that a standard winning hand has five "blocks" - four groups + one pair. Each joint in the hand can be turned into a block. Since pairs can turned into triplets, each pair is also a block. When a hand has 6 blocks, one of them will eventually need to be discarded. Thus, it is good to build hands with | "Five-block theory" states that a standard winning hand has five "blocks" - four groups + one pair. Each joint in the hand can be turned into a block. Since pairs can turned into triplets, each pair is also a block. When a hand has 6 blocks, one of them will eventually need to be discarded. Thus, it is good to build hands with 5 blocks in mind, discarding a "6th block" early. | ||
Example 2-shanten hands: | Example 2-shanten hands: | ||
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Therefore, the 5-block theory is often recommended. E.g.: Once a hand has 5 blocks, it is better to "upgrade" a joint (e.g. turning a 45 ryanmen into a 445 complex joint) than to create a new joint. | Therefore, the 5-block theory is often recommended. E.g.: Once a hand has 5 blocks, it is better to "upgrade" a joint (e.g. turning a 45 ryanmen into a 445 complex joint) than to create a new joint. | ||
That being said, having 6 blocks is better than having 5 blocks and 2 isolated tiles. Also, keeping 6 blocks can also be used to aim for yaku (such as [[pinfu]] or [[sanshoku]]). | |||
==Yaku== | ==Yaku== | ||