Chess4D
Free 4D, 3D and 5D chess in your browser
What is Chess4D?
Chess4D is a free browser chess site with three ways to play, with nothing to install. 4D Chess takes the familiar pieces into four spatial dimensions on a compact 4 x 4 x 2 x 2 board, with a hypercube projection view and four 3D board slices; blue markers highlight every legal move. 3D Chess is standard 8 x 8 chess in a 3D view, playable as local two-player on one device or against Stockfish. 5D Chess is an experimental, unofficial time-travel variant inspired by 5D Chess With Multiverse Time Travel, where pieces move between moments and timelines; it is local two-player on one device. Each mode has a rules page and a how-to-play guide. No download and no account needed. There is no online matchmaking or rated ladder.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
subscriptions are gonna be way cheaper and we intentionally did that because subscription revenue is more reliable it makes our business more valuable and it's also giving a discount to the user so it's like a win-win situation right
Price subscriptions well below a-la-carte — you're selling commitment, not just access
Burner priced its annual plan roughly 20% below the equivalent prepaid cost to accelerate MRR growth — the business gets predictability, the user gets a discount. Musetti frames subscriptions as futures contracts: a lower price in exchange for committed revenue. This framing helps founders resist the temptation to match a-la-carte pricing.
When we sort of pivoted into the burner standalone app… it was like a 10x to 100x level of response from even just friends we were showing this to… started to feel pull from the market instead of having to push yourself into the market.
Stop Pushing — Wait for the Market to Pull
The shift from Wrangle to Burner happened because potential users stopped saying "my sister would like this" and started saying "I want this." Greg treats that reaction gap as the earliest reliable signal of product-market fit — 10–100x stronger response with essentially the same audience.
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