Analysis: Mauro's Games - 02

[Mauro]

It just happened today I played another game I think it's good to see if I made mistakes, since I didn't won a single hand, but I didn't end up fourth nevertheless; some mistake in defense, not so sure if I made mistakes big enough to account for the lack of winning. Here it is: http://tenhou.net/0/?log=2015091016gm-0 ... 00215&tw=0

Here some comments about things I noticed while playing or reviewing the game (E1/0 means East 1, 0 continuance, the number preceding the comments is the step); any comments also on other parts of the game are welcome; here the first game: http://reachmahjong.com/en/forum/viewto ... 48&t=53424 Again, thanks in advance

E1/0

Step 5: I think it would have been better to discard , but I don't think it's a serious mistake.

E2/0

8: maybe
10: , I guess, since it's isolated.

Not sure if it was worth trying four triplets, or if it would have been better to stay in defence.

S1/0

I should have discarded East before.

S2/0

Not sure if ponning was the right thing to do, I did so because Green Dragons pon, South pair and a dora, it's at least two han, maybe three if I draw/call South, which could give me a nice lead on third.

S2/1

5: maybe discard , since already makes a group with , while let me use

7: as 5, just with

In the end I went in defence, since I was 2 shanten and didn't want to risk dealing in and get closer to fourth.

S2/2

Not sure why I didn't discard dragons before.

In last step I discarded also due to time, but maybe would have been better? Pros, I would have been in tenpai (+1000 instead of -1500); cons, not sure how risky it is discarding : it's safe for East and West, not sure for South.

S2/3

6: , I guess, instead of

And then, defense.

S3/0

Bad, bad riichi: I didn't have a chance to gain positions, I lost the chance to defend, and I didn't even noticed two were already discarded.

S4/0

I started with the idea of going in defense, I was even more sure about it when East kan'd , I should have kept (in fifth step).

In the end I was collecting safe tile; not sure if discarding was too reckless, in retrospect I think I should have began discarding safe tiles sooner, since I had quite a lot of them against East.

S4/1

5: a bit risky discarding , maybe, since West looked like a pin flush (not sure, though, since he already had a yaku could be something else, and being first also a quick winning was fine for him).

[or2az]

In last step I discarded also due to time, but maybe would have been better? Pros, I would have been in tenpai

That should have been your winning tile.
South 2/2: This was your hand in step 13.

.. ....

You tossed the .
If you would have discarded the ( preferable to the 8 since two of them were already out), you are in tenpai, waiting on the .

A few turns later, West tosses the .
If you chi (456), discard , you would again be tenpai, waiting on the .

Then, when you drew that , TSUMO!


A little more reading on tile efficiency might help. In the beginning of that same hand, you drew the and discarded the .
Better choices would have been the . The got tossed by North 3 turn later and you might have decided to chi (123).

I would forget about suji for a while, except for the basic stuff (1-4-7, 2-5-8, etc) and concentrate on betaori for defense. The brain can only absorb so much at a time. Just my opinion for someone only playing for a month. I am far from the resident expert here. Took quite a while for me to even start playing defense.
A building needs a solid foundation in order to "reach" great heights.

[Gnom]

Sorry, I can't see your game but this looks like a big mistake in tile efficiency, something you may want to work on:

5: maybe discard , since already makes a group with , while let me use .

If I understand correctly, you had and you're thinking that is better? It's clearly not since you'd be throwing away two ryanmen 45 and 78 for one ryanmen plus an extra tile that doesn't have a use right now. You could want to throw away one of the two shapes if there are others in your hand since they over lapse on the , but in that case you'd dump one entirely!

[Mauro]

You tossed the .
If you would have discarded the ( preferable to the 8 since two of them were already out), you are in tenpai, waiting on the .

A few turns later, West tosses the .
If you chi (456), discard , you would again be tenpai, waiting on the .

Then, when you drew that , TSUMO!

Yup, I missed that; discarding hoping to draw/chii (just one out) or (three out), on the idea that very few craks have been discarded, would make sense?

I will keep working on my tile efficiency reading, thanks

I would forget about suji for a while, except for the basic stuff (1-4-7, 2-5-8, etc) and concentrate on betaori for defense

Sure, I was asking about the other suji for the future, now I'm not studying them; too much information, too soon.

If I understand correctly, you had and you're thinking that is better?

This was my hand:

draw:

I discarded , I was saying that I think it would have been better to discard , since discarding it I don't lose (it still makes a group with ), while discarding I lose the chance to make .

[Gnom]

Ah, sorry, I didn't understand what your hand was like! My bad. Guess I shouldn't have answer without actually watching your game.

[Mauro]

No problem; now I'm trying to understand why you can't watch the game - I tried from a coupla PCs and it works.