After the official MSWCH had ended, they continued with the Chord Cup. As mentioned in the previous post, it was new to me.
So here’s what I learned: Chord Cup is a 1vs1 elimination Minesweeper competition where players race to solve a series of Minesweeper boards faster than their opponent. The series of boards are identical for both players, and they are all no-guess boards. Each board has a starting point indicated to the players, so that the competition is fair with neither player needing to make any guesses. (Because depending on where you start a board, you might or might not have to guess.)
I snapped a few photos while they were playing.
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| solving the same boards |
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| this was the finals; it's neck and neck! |
Here are a couple of videos where you can see the players in action.
Halfway through the Chord Cup, we had a late tea break (merienda in Spanish). I snapped a quick discreet photo of the food they had prepared.
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| fruit, bread (soft baguette-like slices that are used for canapes), ham, cheese (I think), guacamole, potato chips, and maybe some stuff I don't remember |
After the tea break and the finals of the Chord Cup, we had the prize presentation.
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| our organizer, with prizes on the table |
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| joined by his co-organize, who is actually from Madrid |
The next day, we had the Minesweeper Royale.
We played this on minesweeper.online, which seems to be where most people play these days (not on their personal computer). We would play whatever boards we wanted, and the scores (and stats) would be logged. Then we would see our best scores in each category like speed, efficiency, win streak, and density. On the official website for MSWCH 2025, you can see two other categories which are arena and mobile. I can’t remember what arena was, but the other is where you play on a mobile device instead of using a mouse on PC.
I did not take part in the Chord Cup, but I did participate in the Minesweeper
Royale. I knew my speed would not be up to par, so I just tried to play for
efficiency.
You know what? I believe I was the one who kickstarted
the interest in efficiency, because for the longest time I had been trying to
minimize the number of clicks I used, and use flags as efficiently as possible
(only place flags when I need them for double-clicking). Indirectly, using
less clicks also means we can move faster, right? I remember feeling extremely
accomplished the first time I managed to finish a board using fewer clicks
than its 3bv (the 3bv of a board is the minimum number of left-clicks needed
to finish the board). After I shared that, interest in efficiency started and
the IOE (index of efficiency) was added to the Minesweeper stats.
Anyway,
I was no match for these new players who seemed to have been working on
efficiency since they started playing. Damien Moore (our veteran and owner of
the Authoritative Mineweeper website) was at the session and was also playing for efficiency, but he fared just a
little better than me.
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| initial ranking at 3rd place (because no one had started for efficiency yet? :P ) |
Note that the prizes for Minesweeper Royale are cryptocurrency. First three spots in each category win some money!
But of course my ranking had dropped by the time the tournament ended.
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| 12th place, with Damien right above me |
A newer player had shared with us the previous day that there were modes on
their new websites to allow practising for efficiency. It seems that it is
easier to get better efficiency scores on denser boards, so the algorithm
would only generate higher density boards when they were practising for
efficiency. (Note: In these situations where boards are not generated fully randomly, I think high scores are
not valid for true rankings.) Then while playing normally, they would be able
to recognize which boards they might play more slowly on to optimize
efficiency, and which boards they should speed up on to play for time.
It
is worth mentioning that there were three or four website developers at the
event…they had great discussions about website design and maintenance, while I
mostly listened in.
The organizers printed a t-shirt for the event, and I bought one for 12€.
They also printed a bunch of stickers. They said they had estimated that each person could have 5 of each sticker. I wasn't going to take so many at the beginning, but then I thought it might be a good souvenir/advertisement back in Malaysia, so I took my allocation (what would they do with the leftovers anyway?) and offered the excess to the people at work.
Props to those who designed these...I like some of them more than others, but they all look pretty good and professional.



































