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18 Jun 2025
I've been hooked on Queens puzzles for the last few months, and as a side project built a solver for them: github.com/dschafer/qsolve.
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18 Jun 2025
It does basic image recognition to read games in from various sites, especially from linkedin.com/games/queens (the original as far as I know). It also picks up in-progress games as well, which is useful for getting a hint on hard puzzles.
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18 Jun 2025
Feedback/PRs welcome, especially if there are optimizations that I missed: there should be good built-in test coverage and benchmarking if folks want to play around with it.
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19 Nov 2024
I'm ready to share a side project I've been working on: footballpace.com. It uses historical data to see how typical soccer champions perform in each match; then uses that to generate strength of schedule–aware tables, and to show the difficulty of upcoming matches.
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19 Nov 2024
The source code is at github.com/dschafer/football…. It's hosted on @vercel with a @nextjs / @reactjs front-end, and a @dagster data pipeline.
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6 Nov 2023
This tweet by @zeeg points out a valid obstacle towards the adoption of GraphQL — but a surmountable one, in my view. There are two major things needed to overcome this concern. (continued below)
5 Nov 2023
GraphQL's adoption issue in a nutshell:
"It's great that my frontend can decide what data the API returns!"
What an experienced engineer sees:
"It's terrifying that end users can change the performance characteristics of our service on the fly"
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6 Nov 2023
But this tradeoff is right in a lot of use cases... and when it is, the benefits of GraphQL can be massive, which is why so many folks are using it and happy with it.
(and if someone wanted to build/has built that tooling I mentioned, they'd make a lot of GraphQL users happy)
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6 Nov 2023
Just saw the follow-up at x.com/zeeg/status/1721383299… — such tooling helps with high-traffic use cases, but not external ones.
You *can* use GraphQL for high-traffic external APIs (as GitHub demonstrates)... but "most of you shouldn't be using it" is spot on advice for that use case
6 Nov 2023
While these problems might not exist for you, that doesn't mean they couldn't. Internal GQL might be fine. Low user traffic GQL might be fine. The issue is when you have high traffic APIs and/or external APIs. Untrusted user input is what's going to cause outages.
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