This post is a short chrono-logue about my time with the card game Hanabi, which I play with the H-group. Thus, it’s also implicitly an advertisement for why I enjoy the game Hanabi so much. I think the progression is a bit interesting because it can be divided into almost discrete “stages”, with each stage… Continue reading The depth of Hanabi
Category: Publicity
Slice of life of the OTIS GM
Here’s a snapshot of what running OTIS looks like these days. Starts from last Sunday afternoon until Monday lunch. Timestamps indicate when the action was completed (rather than started). Sunday 13:04: Process a late financial aid request from someone who forgot to request it earlier. Sunday 13:14: Edit OTIS website to clarify that if you… Continue reading Slice of life of the OTIS GM
Twitch & USEMO Announcement
Twitch Solves ISL Season 3 I'll be resuming streaming live solves of math problems this fall! As usual, the stream runs at 5pm Pacific / 8pm Eastern on Fridays, for 2-4 hours per stream usually. The dates of the first ten streams are currently scheduled (tentatively; these move around a lot) as: Friday September 15… Continue reading Twitch & USEMO Announcement
New handout: Intro to Proofs for the Morbidly Curious
Downloadable at https://web.evanchen.cc/handouts/NaturalProof/NaturalProof.pdf. I don't know why I thought to write this, but it's been bugging me for a year or two now that I've never seen the answer to "what is a proof" written out quite this way. So here you go. It's a bit weird for me to be writing an article that… Continue reading New handout: Intro to Proofs for the Morbidly Curious
Signal boost for Carina Initiatives full-time position
The Carina Initiatives (https://carina.fund) is a friend of the math education community which has supported organizations like Art of Problem Solving, BEAM, Athemath, and others. They're starting a math talent search organization in the United States and are looking to hire a full-time leader (salary $200K-$250K). Passing this along in case anyone in this space… Continue reading Signal boost for Carina Initiatives full-time position
But look at me now
Last weekend in StarCraft, the world championship at IEM Katowice 2023 saw a so-good-it-must-be-scripted Cinderella story, where Oliveira won the world championship in a totally unexpected way. It was a whole roller-coaster of upset after upset from Oliveira, and up until the grand finals we were all still asking, "this can't be, is this really… Continue reading But look at me now
Japanese EGMO is published!
I'm happy to thank 日本評論社 and their team (Fuma Hirayama, Yuki Kumagae, Taiyo Kodama, Ayato Shukuta, among others) for making the Japanese translation a reality. As well as tripling the length of the errata PDF :) This marks the second translation of the EGMO textbook (a Chinese translation was published a while ago as well… Continue reading Japanese EGMO is published!
Two updates on the EGMO textbook
Couple Thanksgiving presents for y'all: Errata List now on GitHub The list of errata is now version controlled on GitHub: https://github.com/vEnhance/egmo-book-errata.So now you can actually see a changelog of the ocean of typos as they come in.Shout-out to the crew working on the Japanese translation of the book for finding way more errors than I… Continue reading Two updates on the EGMO textbook
Twitch Solves ISL, Season 2
By popular request, Twitch Solves ISL is renewed for a second season which will begin on Friday, 18 November 2022. As in the past, streams will start at 8:00pm Eastern time on Friday nights, and last 1-4 hours depending on how much coffee I drank that morning. I've scheduled 26 episodes for the second season… Continue reading Twitch Solves ISL, Season 2
Ending Season 1 of Twitch Solves ISL
To all my loyal viewers --- After two years, 480 hours, and 102 episodes of Twitch Solves ISL, I've finally decided that it's time for me to take a hiatus from my weekly Friday night streams. So, episode 102 will be the end of Season 1. To answer the obvious question: I'm definitely open to… Continue reading Ending Season 1 of Twitch Solves ISL


