WSOM 2010 Tournament Report
This report on his play by William Hung, one of the Mahjong Club players at the World Series of Mahjong, is really interesting as it gives fantastic insight into the thoughts and strategies in these competitions. Many thanks to William for his hard work compiling this.
Hi everyone. This is my tournament summary for the 2010 World Series of Mahjong. First of all, I need to make it clear to all of you that I do not have 100% accurate hand histories. I did not take notes of starting hand nor the each tile drawn during each turn.
However, I do remember all the key hands of each ½ round. This means players are randomly drawn to play 8 hands together at a time before switching. I will assume that you know the rules of World Series of Mahjong. If not, you may want to read the rules and scoring system on www.wsom168.com.
Day 1
Round 1a
The player that sat directly across from me won 2 big hands – one hand Mixed One-Suit (混一色) and red dragon (50-point base value) and another big hand with Pure One-Suit (清一色) (90-point base value) from discards from the guy sitting to the left of me! I’m not happy that I have to pay the 30 point minimum because I did not discard those winning tiles. I could not win any significant hand during this half round. I remember I won two 1-point hands (chicken hands), but not much else.
Result: -75
Round 1b
We were winning hands with basic All Sequences (平和) for the first 4 hands or so. 3 of the last 4 hands were big hands. I won on the 6th hand with Mixed Lesser Terminals (混全帶么) and
All Sequences (平和). Unfortunately, I was responsible for discarding the winning Green Dragon the very next hand for Mixed One-Suit (混一色), Concealed Hand (門前清), Value Honor (番牌)
(55-point base value) for the player right across from me.
It was only the 7th tile I discarded. I knew the opponent across from me was going for Mixed One-Suit (混一色) with Bamboos. However, there was no reason for me to believe he was ready (one tile away from winning). His discards looked something like:
I thought
will help someone claim pung, but not the winning tile. I lost 105 points, while the other players lost 30 points. There was not much I could do. If I were to totally give up my hand, I could probably hold on to my green dragon tile. But I felt my hand was not worthless, so I chose to discard the honor tile green dragon to increase my winning chances for my hand.
Fortunately, on the 8th hand, I was able to win Three Similar Sequences (三色同順) with All Sequences (平和) the last hand.
Using the 1-2-3 sequences and 7 dot as my pair, I was able to win on 9 character with an open-ended wait of 7-8 character. This hand had a 40-point base value, giving me 120 total points. This hand gave me a much needed small positive score to finish off the 1st round.
Result: +109
We need to take the square root of the total score from each round to get the actual score. If you read about the tournament structure for this year, you will realize its intention to minimize the luck factor somewhat.
Total Raw Score after Round 1: -75 + 109 = +34
Total Score (after Square Root): +5.83
Round 2a:
I won the very 1st hand with No Terminals (斷么九) and Three Similar Sequences (三色同順).
I claimed pung on 8 characters and made a chi on 2-3-4 bamboo sequence. I had 2-3-4 dots, a pair of 6 dots, and 3-4 characters that made an open-ended wait. I was fortunate enough to self-pick 2 character for a +120 point hand. (40-point base value multiplied by 3)
I could not win another hand though. The Japanese player across from me was consistently winning 6-7 hands that are worth 5-point or 10-point base value. Mostly they were No Terminals (斷么九), Value Honor (番牌), All Sequences (平和), and Concealed Hand (門前清).
Result: +80
Round 2b:
I had a really bad outing on this ½ round. I discarded the winning tile for Mixed One-Suit (混一色) twice. I played with a famous Japanese comedian sitting to my right. I did not know he was a Japanese comedian until Garthe told me later when I finished the tournament. All I know was that every hand was being recorded using a video recorder behind me.
I had this experience before when I played in the World Mahjong Tour – Celebrity Invitational, so that was not an issue for me. I really wished I had a better showing for Japanese media as well as the Japanese players. It was a rather embarrassing ½ round for me as I couldn’t get anything going.
Result: -205
Total Raw Score after Round 2: 80 – 205 = -125
Total Score (after Square Root): -11.18
Total Score after 2 rounds (Taking sums of square roots) = -5.35
I need to turn things around in a hurry…
Round 3a:
This was interesting because each player won a big hand once. I remember I won Three Similar Sequences (三色同順) and All Sequences (平和). The girl from Hong Kong on my left won with All Triplets (對對和) and Value Honor (番牌). I forgot what the other two hands were, but I remember they also had 40-point base value as well. It was basically a draw for everyone.
Result: -15
I don’t think I could have done anything differently for round 3a, so let’s move on to round 3b…
Round 3b:
I really needed a decent positive score to remain in contention for top 16 / top 32. I didn’t feel the need to gamble yet, so I decided to stick to the gameplan of taking of what’s given. This means I did not try to force myself to go for big hand every hand yet.
This worked out pretty well. I won one key hand with Three Similar Sequences (三色同順), All Sequences (平和), No Terminals (斷么九), and Concealed Hand (門前清) with a 55-point base value. After that, I played defensively and won some 5-point hands of All Sequences (平和).
Result: +99
Total Raw Score after Round 3: -15 + 99 = +84
Total Score (after Square Root): +9.17
Total Score after 3 rounds (Taking sums of square roots) = +3.82
This is not ideal, mostly because of my poor showing in round 2b. I will need to gamble day 2, but I will try to pick my spots.
Day 2
Round 4a:
I did not get any hand that had big hand potential, so I concentrated on winning lots of small hands consisting of No Terminals (斷么九), Value Honor (番牌), All Sequences (平和), and Concealed Hand (門前清). I just made sure I did not give up the winning tile to big hands.
Result: +45
Round 4b:
The key hand was Seven Pairs (七對子). I remember my opponent sitting to my left was close to winning with Mixed One-Suit (混一色). However, I know I needed the points for my Seven Pairs (七對子) this round. It was a critical hand because I know that if I lose, I will need a miracle to make top 16/ top 32. Luckily, I dodged a bullet when I discarded a 7 character and he didn’t win with it. I self-picked 7 dots to win the hand. (30-point base value, 90 point total)
I won a few small hands thereafter and played fairly cautiously.
Result: +98
Total Raw Score after Round 4: 45 + 98 = +143
Total Score (after Square Root): +11.96
Total Score after 4 rounds (Taking sums of square roots) = +15.78
I could not ask for a better start to my day 2. I definitely felt that I was in contention for top 16 / top 32.
Round 5a:
If I’m not mistaken, I was playing with PUYO, a Japanese professional mahjong player. I also saw a Chinese lady that qualified from i8 Qualifiers. I know I have a tough table, because i8 is also a website I played on from time to time and there were hundreds of players that played in their World Series of Mahjong qualifiers, so I know that lady is a tough player too.
No one was able to win a big hand at all, but that does not mean this table was boring. There were many strategic pungs and chows. I felt that all of us were playing at a high level, paying attention to every discard.
Result: -27
I didn’t do anything wrong for round 5a, but I only have 24 hands left for the tournament, and 8 hands left for this round. I need to do whatever it takes to get a positive 100 points (raw score) for this round.
Round 5b:
I drew another tough table. There was a lady that qualified from Taiwan sitting directly to my right and another veteran Japanese professional player sitting across from me. I started off well, winning a 15-point hand and a 10-point hand, respectively – No Terminals (斷么九), Two Concealed Triplets (二暗刻), Concealed Hand (門前清) followed by No Terminals (斷么九), All Sequences (平和).
Unfortunately, I couldn’t get anything going until the last hand. The last hand was another critical hand. I made a pung of 9 dots and North. I could have won with 6-character for a Chicken hand (1-point base value), or a 9-character for Mixed Lesser Terminals (混全帶么) (40-point base value). I had to have the 120 points or I will need a miracle in the last round. So I decided to not win on a discard of 6-character from the Taiwanese player. Unfortunately, the Japanese player pung the Red Dragon from the player sitting on my left and won the hand by self-pick (Tsumo) on his next draw. It was so disappointing…
Result: +20
Total Raw Score after Round 5: -27 + 20 = -7
Total Score (after Square Root): -2.65
Total Score after 5 rounds (Taking sums of square roots) = +13.13
If it was early in the tournament, a +20 raw score is not a bad result at all. However, I think it should depend on the kind of hands you get as well. I had the potential to end up with +113. After the round was over, I saw that the projected cut to top 16 is something like +45 (total score after taking sums of square roots from each round). For top 32, I predict it will be around +30.
This means I have 16 hands to earn a positive score of 250 points or more. It is very difficult, but I can’t give up now. If I don’t make the cut, that last hand from round 5b will probably sting…
Round 6a:
I had three opportunities to win monster hands, but couldn’t win any of them. The first was Mixed One-Suit (混一色), Value Honor (番牌), and Nine-Tile Straight (一氣通貫). The second was Mixed One-Suit (混一色), Value Honor (番牌), and Three Identical Sequences (一色三同順) ! The third was Pure One-Suit (清一色). I was one tile away from winning!
Unfortunately, close doesn’t count. Also, I wasn’t going to play for small hands less than 35-point base value because I cannot afford to waste a hand.
Result: -196
Round 6b:
I really need a miracle for these last 8 hands to have any chance at all. Fortunately, I had the honor of playing against the 2008 World Champion, Alex Ho. It was a shame that I wasn’t even close to winning any hand. The last hand I went for Mixed One-Suit (混一色) and Small Three Winds (小三風), but someone won the hand and I was still two tiles away from winning.
Result: -47
Total Raw Score after Round 6: -196 – 47 = -243
Total Score (after Square Root): -15.58
Final Score (Taking sums of square roots) = -2.47
I think I finished like 95th. I don’t have any regrets at all. To me, finishing 33rd is the same as finishing 201st (out of 201 players). I needed to win 2-3 big hands to have a realistic shot of making the cut to top 16 or top 32, and I almost did. It was a pleasure playing with all of you. I would like to thank my parents, relatives and friends who supported me for this event. In addition, I would like to thank Mahjong Club for sponsoring me in this event as well. I hope I’ll get another shot at World Series of Mahjong next year.






















