tenhou

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Thursday, February 10, 2011

1 dan, near R1800, and some reflections

Hi,

Reached shodan today on tenhou main server... with a rating of 1786.

Some tough luck getting there. Took me about 5 games to get the last 30 points I needed. There was one particularly frustrating game.

First round, I play into a "NoName" player's mangan. Next hand, that NoName player leaves play (he is to my right). The other two players call like crazy off of him, speed up the game, and win 1-2 fan hands like crazy.

I barely made it into 3rd place... the game was too close, and went into Overtime into the South round...

Although I made a slight comeback, my riichi played into a East ron in the final hand and lost.

It is rather unfortunate that one's rating and stats on Tenhou are affected by games where NoName players (or any players) leave early and play dead hands for the rest of the Hanchan.

No really notable hands. I believe I have improved greatly from studying games I just played (and lost) and looking at how I played into other people's hands, and what I should have been looking for. It also helps to look at your old hands from the standpoint of tile efficiency and probability of draws.

Hopefully I will have a more substantive post sometime this weekend. This is a nice landmark to make a post about though!

Good luck,
Tyche

Friday, February 4, 2011

Breaking R1700 on Tenhou

After diligent work over a few months, I've reached R1700+ on tenhou!

I hovered around 1600 until recently. Over the last 2 weeks I've been working on my defensive strategy... and needless to say, it has paid off. I believe my ability to analyze and make decisions has improved consistently since I started playing again.

As a special treat, let's look over the game I won to get R1700.

Scene 1: East Round, First Hand
Me: Playing South
Question: What to discard here? What kind of hands can I plan for?





















Answer:
This was a difficult discard for me to figure out.
In the end, the only two options were 4 man and 7 man tiles. 4 man is dora, so I discarded the 7 man. However, should one discard the dora or the non-dora? I didn't want to commit, so the 7 seemed natural. If I meet a riichi, I can start discarding the Chuns to buy time if I'm scared.

This leaves me with 10 tiles to wait on... the 3 remaining 7 sou, the 3 remaining 2 pin, and the 4 remaining 5 pins.

I planned to riichi, considering my only yaku was the pon of Chun, and also considering the 4 man dora would probably get tossed for tenpai.

Result: I riichi 2 turns later on the 2-sided pin wait and tsumo, getting a nice Riichi, Menzen Tsumo, with Chun for 4000 points.

Scene 2:
East Round, 3rd Hand
Me: Playing West
Question: What Would You Discard? What hands are you looking for?





















Answer:
This is one of the heaven or hell hands. Either they pay off big or they make you cry when you discard into someone else's ron.

I wanted to be flexible with this hand. It has potential to be a yakuman (Suu An Kou - Four Closed Pons). It also has potential for:
- 2 or 3 dora
- Pon of Haku and Hatsu
-San An Kou (3 Closed Pons)
- Toi Toi (No Chi's)

Which is in the range of Mangan to Haneman--either of which is fine with me.
When I say "I want to be flexible"... I mean it's value is going to be relative to the discards my opponents give, and the draws I get. If someone drops a dora, I'm probably going to call and go for toi toi or a 2-sided wait. If I draw well, I'll go for Suu An Kou.





















:) I drew well. I got my Suu An Kou tenpai. I tsumo 2 turns later. Yakuman.

Final Scene:
East Round, 4th Hand
Me: Playing West
Question: What to Discard? What is the plan?




















Answer:
WIth 59400 points, it's hard to imagine that one would need a plan to win, especially when I'm so far in the head in the last hand of the match. But the main objective is to make sure no one grabs a monster--especially East since he/she can keep the play going.

This discard is tough to figure out. I ended up discard the 1 sou, intending to clear out the terminals and get a cheap tanyao. However I think this is a bad play.

5 pin is the best choice I think, and is the most flexible. 5 man would be just the same, if it wasn't a dora.

Here is some backup evidence via the Tenhou Shan-Ten-Uke Program:
http://tenhou.net/2/?q=223578m589p11677s

The game ended with a South ron on the North Player.
Tyche in 1st, now with a rating above 1700!

Please submit your questions and comments. Good luck!