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Score table memorization: Difference between revisions
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*25 fu - Chiitoitsu | *25 fu - Chiitoitsu | ||
Therefore, by learning point values for | Therefore, by learning point values for each of 20 fu, 25 fu, 30 fu, and 40 fu, you'll cover a large majority of cases. | ||
If a hand has declared [[kan]], has at least 2 closed simple triplets, or 1 closed terminal/honor triplet, it is likely that the hand deviates from these shortcut values. | If a hand has declared [[kan]], has at least 2 closed simple triplets, or 1 closed terminal/honor triplet, it is likely that the hand deviates from these shortcut values. | ||
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Therefore, you can multiply fu by 2, then subtract 1 han, and end up with the same score value. You can also add 1 han, then divide fu by 2, and end up with the same score. This means by memorizing the 30 fu values, you will also memorize the 60 fu values. By memorizing the 25 fu values, you will also memorize the 50 fu values. | Therefore, you can multiply fu by 2, then subtract 1 han, and end up with the same score value. You can also add 1 han, then divide fu by 2, and end up with the same score. This means by memorizing the 30 fu values, you will also memorize the 60 fu values. By memorizing the 25 fu values, you will also memorize the 50 fu values. | ||
By proxy, this means that when a hand gains +1 han with the same fu, it roughly doubles in point value. Due to rounding, a hand may not ''exactly'' double in value, but it is often very close to double. | |||
=== Mangan and more === | === Mangan and more === | ||
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|} | |} | ||
== | ==Memorizing common values== | ||
Due to the size of the scoring table, it is important to know the most common values first. Other than the mangan+ hands, knowing the (1-4 han) + (20, 25, 30, 40) fu hands are the more important. | Due to the size of the scoring table, it is important to know the most common values first. Other than the mangan+ hands, knowing the (1-4 han) + (20, 25, 30, 40) fu hands are the more important. | ||
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== | ==Equivalent point values== | ||
As mentioned above, adding one han is equivalent to doubling the hand's fu. This rule makes it easier memorize, say, 20 fu, if you already know the 40 fu values. | As mentioned above, adding one han is equivalent to doubling the hand's fu. This rule makes it easier memorize, say, 20 fu, if you already know the 40 fu values. | ||
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===25 fu and 50 fu=== | ===25 fu and 50 fu=== | ||
Now, the 25 fu values can be doubled to 50 fu. | Now, the 25 fu values can be doubled to 50 fu. So, by knowing the "chiitoitsu" point values, one would already know the 50 fu column. | ||
{| class="wikitable" width=70% | {| class="wikitable" width=70% | ||
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| {{Score cell|tsumo=Dealer tsumo|ron=Dealer ron}}||align=center|{{Score cell|tsumo=800|ron=2400}}||align=center|{{Score cell|tsumo=1600|ron=4800}}||align=center|{{Score cell|tsumo=3200|ron=9600}} | | {{Score cell|tsumo=Dealer tsumo|ron=Dealer ron}}||align=center|{{Score cell|tsumo=800|ron=2400}}||align=center|{{Score cell|tsumo=1600|ron=4800}}||align=center|{{Score cell|tsumo=3200|ron=9600}} | ||
|} | |} | ||
===30 fu and 60 fu=== | ===30 fu and 60 fu=== | ||