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Re: "I was thinking about how many unique games can be had in..."
There are currently 12,217 pangrams in the dictionary. Each pangram is good for 7 possible games. So, 85,519, I suppose.
I keep a list of old games to avoid duplication when generating new games.
Jun 17 · 6 months ago
🚀 stack · 2023-06-17 at 21:43:
I also get rid of games with ridiculously high and low scores. I think currently limiting to between 60 and 140 or so. It is really painful to play a game with a maximum score of 800!
🚀 stack · 2023-06-17 at 22:36:
And if you don't care about real words, the number of possible unique permutations is 7 * 26 * 25 * 24 * 23 * 22 * 21 * 20
First letter is any of 26. Second is one of remaining 25 (since no duplicates are allowed). Likewise, the third is one of 24, etc. Finally, there are 7 possible games for each set as each of the 7 letters can go in the middle.
🚀 mbays · 2023-06-20 at 05:58:
@stack You forgot to account for the fact that the order of the outer letters doesn't matter. It should be 7*(26 choose 7) = 7*26!/(19!*7!) = (26*25*24*23*22*21*20)/(6*5*4*3*2*1) = 4604600. To explain: there are 26*25*24*23*22*21*20 ways to fill the spellbinding hexagon with 7 distinct letters, but any permutation of the outer 6 letters gives the same game, and there are 6! = 6*5*4*3*2*1 such permutations.
Interesting that you clamp the possible total scores! I ended up doing that in Zaubuchstabier after getting annoyed at ridiculously high-scoring games, but I'd assumed this was due to the more generative nature of German.
🚀 stack · 2023-06-20 at 13:58:
@mbays: you are totally right, I completely missed the local permutations...
🍀 gritty · 2023-06-20 at 23:45:
@mbays nice. thanks for the explanation
I was thinking about how many unique games can be had in spellbinding. I've been out of comp sci theory for quite a while but I came up with: 26*6^20 but I'd love someone better at this than me to correct it. 26 center letters * 20 (19?) remaining letters swapped out for each letter on the circle (6). I feel like factorials are involved but maybe not.