Show HN: Diagonals (Diago) – a chess variation where the pieces stay diagonally https://ift.tt/MZTSdQk

Show HN: Diagonals (Diago) – a chess variation where the pieces stay diagonally This is a variation of chess in which, in addition to the arrangement of the pieces, the rules governing pawn movement are altered, and new rules are introduced: Called Diagonals, Diago, or DiagoChess. Standard 8x8 board. White sets up in the bottom-right corner (King on h1) and moves first; Black sets up in the top-left corner (King on a8). Movement: Kings, Queens, Rooks, Bishops, and Knights move normally. Pawns move 1 square in any direction to empty squares, but capture strictly diagonally. Special Rules: No check, checkmate, castling, pawn promotion, or en passant. Win Conditions: First player to capture the enemy King wins immediately. Attacked King Mechanics: Streak Reset: The attacked turn counter resets to zero as soon as your turn starts with your King safe. You can play this version on the website; I've added full-fledged multiplayer with the ability to create public and private rooms. The multiplayer is powered by NOSTR (nostr relays). The website features a game against a bot at various difficulty levels, single-screen gameplay, online matches against other players, a time limit like in chess, and even a profile (either as a guest by entering just a nickname, or via Nostr). https://diagonals.vercel.app/ October 27, 2026 at 02:11AM

Show HN: Tiny Tube – A self hosted video sharing server in a single Go binary https://news.ycombinator.com/item?id=50257997

Show HN: Tiny Tube – A self hosted video sharing server in a single Go binary https://github.com/spapas/tiny-tube October 27, 2026 at 02:15AM

Show HN: ToiletPanic – A static survival guide for bathroom emergencies https://ift.tt/F7hKO0e

Show HN: ToiletPanic – A static survival guide for bathroom emergencies https://toiletpanic-119.netlify.app October 26, 2026 at 04:47AM

Show HN: Ultimidi – piano learning web game https://ift.tt/97dtN1U

Show HN: Ultimidi – piano learning web game Hi HN, 10 years ago, as my BsC final project I had the idea to make a quick game that used neural nets to detect notes played on a guitar, and I made a small mini-game to make use of that. I always wanted to improve on that idea, so last year I started making my own piano-learning game. You know how in most games you learn complex key combinations and sequences (i.e. Mortal Kombat fatalities), but those don't have much use outside of the game. My idea was to make a game that can be played with the piano, so you you learn notes, chords, scales simply by playing. While making it and prototyping many versions, I realised that that idea didn't work as well as I wanted, because it is hard to focus on reading notes, playing and some other gameplay logic. In the end I settled on a combination of basic beat-based notes playing and a few minigames that use the piano as input. My goal now is to add even more such minigames, for learning different sheet reading, music theory and piano playing techniques. For art, I am unfortunately not a designer and have no budget for hiring one, so I decided to go with some simple shaped art generated in bulk using AI rendering SVGs. Hopefully this is just a placeholder until I find someone to do the art for the game. You can try it out for free, it does have some extra content in the Pro version, but a lotof content is free, including the ability to directly play full songs in scrolling or sheet mode here: https://ift.tt/zCHpSuJ Happy to hear any feedback, especially if the MIDI connection/notes detection didn't work or something doesn't feel good. Thank you! https://ift.tt/rakWy4x October 26, 2026 at 12:58AM

Show HN: Printable Calendar Maker https://ift.tt/3OPntgS

Show HN: Printable Calendar Maker https://ift.tt/MyZbE2p October 26, 2026 at 03:05AM

Show HN: Rostr – Give your agents names, remember who's working on what https://ift.tt/eDiWsPB

Show HN: Rostr – Give your agents names, remember who's working on what https://getrostr.sh/ October 26, 2026 at 01:56AM

Show HN: macOS window switcher replacement that keeps each Space separate https://ift.tt/gNr29vj

Show HN: macOS window switcher replacement that keeps each Space separate https://debutspace.com/ October 25, 2026 at 03:35AM