Solving LinkedIn Queens With CP-SAT
... and Zip and Tango, too

On LinkedIn, you can play a variant of the N-Queens problem. A community version of the puzzle can be found here.

An example puzzle looks like this:

The idea is that each row, column, and colored region must contain exactly one queen. Queens cannot be placed in adjacent cells, including …

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Books I’ve Read in 2024

At the end of 2023, certain events in my life led to a realization that I was spending way too little time on reading in the years past, even though I have always been an avid reader in my youth and adult life. Facing some “weltschmerz” and not finding enjoyment …

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reMarkable 2 Screen Capture on Windows 10

I’ve recently bought a reMarkable 2 and am happy with it. Since teaching is still happening online for the most part at the moment, I was curious whether I could use it as a drawing tablet, share the screen with my machine, and then pick that up in e …

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Does It Make Sense to Tune the Cutoff of Trees in a Random Forests?

TL;DR: very likely not.

A student once asked me whether it would make sense to tune the probability cutoff (a.k.a. threshold) for trees in a random forests. Let’s explain first what we mean by that exactly. Assume a binary classification setting. Say we’ve trained a …

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An Exploration of Cellular Automata and Graph Based Game Systems: Part 4
Revisiting the Topic with an Alternative Approach

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