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Core War

@xcorewar.bsky.social

CORE WAR: Hostile Programs Engage in a Battle of Bits https://corewar.co.uk

23 Followers  |  33 Following  |  90 Posts  |  Joined: 24.04.2024  |  1.4451

Latest posts by xcorewar.bsky.social on Bluesky

MTS MARS Tournament Scheduler has been updated. Bugs fixed include self-fight scores, benchmark scores, warrior names with leading digits, and score overflow
corewar.co.uk/tools/mtsv16... #corewar

20.01.2026 19:58 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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pMARS 0.9.5 screenshots #corewar

03.01.2026 17:05 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
pMARS – The Portable Core War Simulator Download pMARS, the portable Core War simulator. Run, debug, and optimise Redcode warriors with the cross-platform interpreter and visual debugger.

pMARS 0.9.5 is ready for release, unless any further changes are requested over the next couple of days. This release includes a new larger X Window display, a new colour Curses display, an optional CVD-safe colour palette, and multiple small issues fixed: corewar.co.uk/pmars.htm #corewar

03.01.2026 14:50 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Core War Challenge (Difficult): Write a program to spawn 8000 processes and fill the entire core with JMP 0 instructions, with one process running each JMP. If you solve the challenge, please share the program length and cycles, but not the code. #corewar

06.12.2025 23:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

This year's Core War Tournament Weekend is over. Congrats to inversed who claimed first place in Sunday's 94 tournament:

1st "Twin Storms" by inversed
2nd "King Cobra" by inversed
3rd "smart clear" by Christian Schmidt
4th "Flaking Rust" by lain
5th "HELLHAMMER" by Drugganator

#corewar #retrofest

17.11.2025 11:11 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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A few demos running on day one of the Retro Computer Fest in Cambridge. v5 of the Core War simulated annealing script on a Milk-V MARS, Core War on the FUSE #zxspectrum emulator on HaikuOS and Core War genetic algorithms on a Raspberry Pi 3B #retrofest #corewar

16.11.2025 07:58 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

The 88 Core War Tournament is over! Congratulations to Inversed. #corewar

1st "Semiopacity" by inversed
2nd "Janus" by inversed
3rd "chaoscan" by Christian Schmidt
4th "TrItE Fighter 5" by Philip Thorne
5th "Bewitching'88" by S.Fernandes

15.11.2025 22:54 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Core War: Tournament Weekend 2025 Announcement

⭐ Core War tournament reminder... the deadline for the 88 tournament is at 11:30am (GMT) on Saturday 15th November. Entries currently received from two players. corewar.co.uk/tournamentwe... #corewar

13.11.2025 16:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Core War: Tournament Weekend 2025 Announcement

You are invited to enter The Core War Tournament Weekend 2025: 15–16 November. Full details at corewar.co.uk/tournamentwe... #corewar

28.10.2025 19:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The Core War Tournament Weekend returns to The Retro Computer Festival on 15-16 November. The 88 tournament on 15th, 94nop on 16th. Entries will be added to the top-x of the Koenigstuhl hill before an iterative push-off with diversity scoring to determine the final rankings. More info soon. #corewar

25.10.2025 17:16 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Core War: Mandragora by Christian Schmidt

20 years ago - Mandragora entered the KOTH 94nop hill on this day in 2005. A clear/imp with a g2-style SPL/DAT clear and vortex-launched imps corewar.co.uk/mandragora.htm

10.10.2025 08:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
CoreWar Nano Challenge

πŸ† Congratulations to Inversed and Dave Hillis, who claimed first and second place in the Nano Core War Challenge with Reptiloid Supremacy, Reptiloid Conspiracy, and Smitten Atrocity. inversed.ru/CoreWar_Chal... #corewar

18.06.2025 18:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Core War Nano Challenge
YouTube video by inversed Core War Nano Challenge

The Core War Nano Challenge is about to go live... www.youtube.com/watch?v=mDBW... #corewar

15.06.2025 14:01 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Join the Core War & Programming Games Discord Server! Check out the Core War & Programming Games community on Discord – hang out with 35 other members and enjoy free voice and text chat.

⏰ TOURNAMENT REMINDER - the entry deadline for the Nano Core War Challenge is at 10:00 UTC on Sunday 15th June. Please ask on the Core War Discord if you need any help.

▫️ Discord - discord.gg/YxrbaQDT9z
▫️ Tournament page - inversed.ru/CoreWar_Chal...
#corewar

11.06.2025 15:04 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
CoreWar Nano Challenge

⭐ CORE WAR TOURNAMENT ANOUNCEMENT ⭐
Inversed has announced the Nano Core War Challenge, with a first prize of $100 πŸ™‚ Entries will be scored against the Nash equilibrium, and a new equilibrium will be calculated.
inversed.ru/CoreWar_Chal... #corewar

17.05.2025 23:11 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Here's a 3D MDS map of the top 100 warriors from the 88 Koenigstuhl. Each point represents a warrior. The closer a point is to another point, the closer the warriors' scores are. #corewar

22.03.2025 06:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Creeper and Reaper, the History of the First Computer Worm Creeper was the first computer worm, spreading across ARPANET in 1971 with the message 'I’m the creeper, catch me if you can!' Here's the history of Creeper and Reaper.

Creeper was the first computer worm, spreading across ARPANET in 1971 with the message "I’m the creeper, catch me if you can!" Here's the story of Creeper and Reaper, which inspired Core War corewar.co.uk/creeper.htm #corewar

27.02.2025 21:48 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
pMARS – The Portable Core War Simulator Download pMARS, the portable Core War simulator. Run, debug, and optimise Redcode warriors with the cross-platform interpreter and visual debugger.

The final release of pMARS 0.9.4 is available from:

▫️▫️

koth.org/pmars/ corewar.co.uk/pmars.htm

29.08.2022 18:30 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Inversed has created a best counter graph for the nano, tiny and limited process hills, connecting each warrior with the opponent which beats it with the highest score:
▫️▫️

groups.google.com/g/rec.games.co… reddit.com/r/corewar/comm…

29.08.2022 18:14 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Has anyone got access to the issues of TudomΓ‘ny (the Hungarian edition of Scientific American) with A K Dewdney's SzΓ‘mΓ­tΓ³gΓ©pes Γ‰szjΓ‘tΓ©k columns about MemΓ³riahΓ‘borΓΊ (Core War)? Thanks #corewar

21.08.2022 10:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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"Windows Hothouse, Creating Artificial Life with Visual C++" by Mark Clarkson (1994) has a chapter on Core War.

10.07.2022 17:39 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Inversed has computed the Nash equilibrium for the tiny hill. Ranking is by probability with all warriors scoring the same. For more details, see "Nash equilibrium: Tiny 2022.03.23

groups.google.com/g/rec.games.co…

27.03.2022 08:28 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Results for the grand final of the Corewar Global Masters, "Tiny Survival":
1⃣ Roy van Rijn
2⃣ Inversed
3⃣ Steve Gunnell
4⃣ Sascha Zapf
5⃣ Dave Hillis
6⃣ Wayne Sheppard
7⃣ S.Fernandes
8⃣ John Metcalf
9⃣ RainRat

14.02.2022 10:42 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Entries are in for the Corewar Global Masters. The action will be livestreamed at▫️ Round 1, 10th Feb, 7pm (CET/GMT+1)
▫️ Round 2, 11th Feb, 7pm
▫️ Round 3, 12th Feb, 7pm
▫️ Lower Ranks, 13th Feb, 6pm
▫️ Grand Final, 13th Feb, 8pm

Spectators welcome πŸ™‚

twitch.tv/corewarglobal

07.02.2022 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The 88, 94 and 94x Core War Hall of Fame have been updated:
▫️▫️▫️

corewar.co.uk/halloffame/94x… corewar.co.uk/halloffame/94n… corewar.co.uk/halloffame/88h…

09.01.2022 08:45 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 08.01.2022 10:30 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The Sierpinski triangle in Redcode #corewar

08.01.2022 10:30 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Here's a short optima number calculator in Python using the bomb-free space algorithm. #python #corewar

▫️

corewar.co.uk/optima/optima.…

03.12.2021 18:28 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Core War: Imps, Imp Rings and Imp Spirals Imp is the simplest example of a Redcode program that is able to relocate itself in the memory array. It copies the contents of relative address 0 (namely the Imp) to relative address 1, the next address. As the program is executed it moves through the array at a speed of one address per cycle, leaving behind a trail of Imps.”

Imps, rings, spirals and how to launch them

corewar.co.uk/imp.htm

20.11.2021 11:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Core War: Optima Numbers Choosing a good step size is critical to the success of a warrior, so we need a way of measuring the effectiveness of a step size.”

πŸ“‰ Methods for finding Core War optima numbers:
▫️ Closest previous hit
▫️ Distance from midpoint
▫️ Bomb-free space
▫️ Locally Fibonacci steps
▫️ Find-x numbers
Sample code

corewar.co.uk/optima.htm

06.11.2021 10:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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