The way to take temporary ready hand

Answer

Commentary

The way to take temporary ready hand

Discard 9p　　　 →wait for Shanpon

Discard 7p or 8p    →wait for Single wait

Discard 1s 　　　 →wait for one before for ready

First, discarding 1s is bad choice.

If you draw 2s or 3s, you can wait 6-9p.

But the possibility of drawing 2s or 3s is only 6% per one rounds.

This is no way to compete.

So which is more advantageous, a single wait or a shannon wait ??

Shannon wait can not change to wait.

But single wait is very flexible.

If you draw 2m, 4m, 6m, 8m, and 1s, you can wait Ryanmen and complete Flat hand.

If you draw 5m, you can wait triple wait, 2-5-8m.

Of curse,  you can wait Dora, if you draw North.

8p is superior to 7p because 8p is safer to 7p.

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Criteria of backing to one before for ready

Answer

Commentary

Criteria of backing to one before for ready

If you discard 5m, this hand is ready.

And if you call Riichi, this hand has Mangan ; riichi, All simples, double sequence, and dora, it's not bad.

Statistically, you may call riichi.

But this Kanchan is too difficult to win experimentally.

Many player wants to back to one before for ready.

 When  would you be allowed to retrogress??

One criteria is 

"Back to one before for ready  if there are more than six tiles of valid alternatives"

Why 6??

The probability of drawing the desired tile in one round is approximately 3%  (1/34).

If there are 6 types, that's about 20% per one drawing.

 There's a good chance you'll get one of these tiles within 5 rounds (20×5＝100)

If it takes longer than five rounds, it's better not to wait in most cases.

→Reference past article

In this hand, 1m, 4m, 7m, 4s, 5s, 7s, 8s, is valid to wait Ryanmen.

If you draw Souzu, you can wait triple sided, and look to triple sequences of 4 5 6.

You should back in such a case.

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When Kanchan is favorable

 

Answer

Commentary

The case of Kanchan is favorable

As mentioned in the last article, it should be remembered that, basically, Shanpon is more advantageous than Kanchan.

If you remember even the reasons for this, you can see the exceptions.

The biggest advantage of Shanpon is that "it's likely to be a trick riichi."

So, naturally, Kanchan is more advantageous for Shannon, which is difficult to trick riichi.

In this case, you have to draw 4 tiles that are 1p,7p, 3s, 9s. 

 Of course, in reality, there are other factors as well, so this is not the only factor to consider.

6p 6p 8p ＋3s 3s 

From this form, kanchan is statistically favored, though by a small margin.

In the case of 6 6 3 3, 3 is actually much more likely to come up, so the comparison is between 3 and 7.

If that is the case, kanchan with more 7's has the advantage.

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Shanpon is superior to kanchan

Answer

Commentary

Shanpon is superior to kanchan

Basically, shanpon wait is superior to kanchan.

In this case, Kanchan wait  of 3m is 4 tile, and shanpon wait of 2m and 3s are 4 tile, it is square.

Difference is possibility of making "trick Riichi".

If you draw 5m or 6s after call for Riichi, this hand chage to "trick Riichi" .

But if you want to make trick Riichi when you wait Kanchan, you have to draw only one tile in this case it it 6m .

Therefore, if you have already discarded 6m, discarding 2m and waiting 2m is superior in this hand.

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Calling for chow and giving up winning , or wait until the end on your own

 

Answer

②　Ignore

Commentary

When is the timing for calling to ready hand without a role ??

Ready hand just a formality means ready hand without a role.

It almost means giving up on winning except for the last tile.

But, If your hand are not ready hand, it means the same thing.

Moreover, if your hand is still one before for ready, you have to pay 1500 point.

 And if you are dealer, your turn is over.

Calling for chow and giving up winning , or wait until the end on your own.

Which is more advantageous ??

The answer depends on the round.

It's better to wait until round 14.

From round 15, it is advantageous to call in all forms regardless of the number of dora.

So in this hand, you had better to ignore.

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The way to choice of three pairs

 

Answer

Commentary

The way to choice of three pairs

As I mentioned in my last article, three paris is the weakest form so you have to break up one of the three pairs.

① Including complex serial pairs → Fix it Ryanmen.

How about this case ??

Looking for 5 blocks, Manzu ; 2 elements, Pinzu; 1 elements, Souzu ; head ＋1 elements.

From this form, you had better not to touch Pinzu and Souzu.

Manzu can change form, if you draw 5 6 8 9, so you are not likely to be gotten backfire.

So the next theory of handling of three pairs is 

② Discard the tiles of the pairs close to consecutive tiles. 

     Otherwise, you remember " don't discard the isolated pairs."

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Three pairs is the weakest form

 

Answer

Commentary

Three pairs  is the weakest form

In mahjong, three pair is the weakest form.

If you have four pairs, you can look to 7 pairs, all triplets, and so on.

If you e calculate, you can tell three pairs will be the most narrowly accepted in almost all of the situation.

Thus, when you have three pairs, you have to crush the one of the pairs.

So which pair to break??

There is an order to this.

The most priority to break up is the complex serial pair.

If you have three pairs including complex serial pairs, You should be trained to discard this  as a spinal reflex.

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It looks like it will be another fine day tomorrow, making it a perfect day to go out.

Tomorrow is a national holiday in Japan, and work will be closed.