Humanity's Last Programmer; Game Designer; Problem Solver; past: OpenAI (Dota), Pro Competitive Programmer, Poker

Joined May 2012
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16 Jul 2025
Humanity has prevailed (for now!) I'm completely exhausted. I figured, I had 10h of sleep in the last 3 days and I'm barely alive. I'll post more about the contest when I get some rest. (To be clear, those are provisional results, but my lead should be big enough)
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I've decided to stream my blind playthrough of Order of the Sinking Star demo (new Jonathan Blow game) on Tuesday, June 16 What's the best time to start the livestream? it will happen on twitch btw: twitch.tv/fakepsyho
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Are there any platforms where we can bet that Fable 5 is going to be back before stock market opens on Monday? At this point, I'd give it like 30-50%
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If you're sad that Fable 5 is no longer accessible, I'm happy to report that Fable 1, Fable 2 & Fable 3 are still available via Game Pass
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Jun 13
This is the craziest part btw - it could pretty much paralyze the whole company. When I worked at OpenAI, the share of non-US nationals among researchers was 40–60%. I would expect that number to be very similar today.
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Jun 13
It honestly might be the best gift that the US government gave to Europe (and China) in a really long time. I also expect this to rollback very soon. Access to US nationals only makes no sense. It should be either everyone or selected governments/institutions.
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: anthropic.com/news/fable-myt…
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Jun 10
Random idea: I could livestream (twitch?) my blind playthrough of the demo while talking about puzzle design. Cons: My English is terrible these days, so it might not be very entertaining Pros: You’ll feel smart watching me get stuck on a very easy puzzle Yay or Nay?
The SURPRISE is: x.com/SinkingStarGame/status… Order of the Sinking Star will have a free demo on Steam, for NextFest, Monday. Because the game is HUGE, the demo is huge: it's bigger than most entire paid puzzle games, and you get to try it out for free.
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Happy anniversary to the one of the most important AI papers from 2025
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To be clear, I really do mean this unironically. It’s rare for a paper to be widely shared, make bold claims, and still be almost trivially identifiable as complete bullshit. Signal boosting this paper was like outing yourself as a disinformation spreader.
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Opening this blog post with a LOC graph makes me assume the only goal here was to boost your IPO valuation. I just cannot fathom how any engineer looked at this and thought "yeah this looks reasonable"
Replying to @AnthropicAI
Today, Anthropic engineers on average ship 8x as much code per quarter as they did compared to 2021-2025.
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May 28
I've been learning English my whole life, and I still refuse to accept that "there", "their" and "they're" are exact homophones.
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May 28
This post was not sponsored by BoldVoice. But I do highly recommend it if you're working on your accent.
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May 27
Crazy is an understatement. ~10 years ago, I had my own small indie studio and we were working on a game in Unity 4.x. If I allocated any temp object in the game loop, I had a random GC call every ~10s that took 10-15ms, which was enough to skip a whole frame. Completely unacceptable in any platfomer, beat 'em up, etc. You couldn't use strings (despite Unity API itself requiring strings as arguments), couldn't resize any dynamic data structures. Couldn't even use a foreach statement and you had to do memory pooling for the tiniest objects. Big chunk of the language was not accessible to you and AFAIK there was no workaround. Writing your own game engine wasn't such a bad idea at the time.
Using a garbage collector in a videogame is crazy. It’s a miracle unity succeeded by putting a gc into every produced game.
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May 27
(apparently) unpopular opinion: if you're using claude code / openai codex, you're not coding, you're managing AI coders
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May 27
if you have negative feelings about this statement, you probably think that coders are better than managers
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May 27
if people really get problems like this during code interviews, I feel that the hate towards leetcode is fully deserved. If you know the segtree (or similar) this is trivial. If you don't, you essentially have to reinvent the wheel.
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May 27
A bit unrelated, but I honestly don't think I've used segtree in even a single heuristic contest.
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May 26
I'll never understand why leetcode got so popular. It's like competitive programming without the fun part. All of these are your standard textbook problems. Either you have the relevant knowledge and it's trivial or you can't do much. No problem solving required.
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May 19
I guess Karpathy's timelines got much shorter
Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.
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May 14
FYI, all four subgames are heavily inspired by existing free puzzle games: - The Hearty Heroes of Hauling: sites.math.washington.edu/~o… sites.math.washington.edu/~o… sites.math.washington.edu/~o… - The Mirror Isles: alan.draknek.org/games/puzzl… - The Promise: silverspaceship.com/promesst… & silverspaceship.com/promesst… - Skipping Stones to Lonely Homes: alan.draknek.org/games/puzzl… Heroes of Sokoban is my favorite and also the most approachable

Something we've been working on...
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May 13
protip: if you see AI and IQ in the same sentence, you can be sure it's just pure webslop cosplaying as science
Today I’m launching AI IQ — frontier AI models, scored on the human IQ scale. Instead of endless leaderboard tables, AI IQ shows: • Where models land on the IQ bell curve • How frontier IQ is changing over time • How models compare on IQ and EQ • What intelligence costs in practice GPT-5.5, Claude Opus 4.7, Gemini 3.1, Grok 4.3, Kimi K2.6, Qwen3.6, DeepSeek V4, Muse Spark, and more. Link in the first reply. Curious which chart surprises you most.
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