Announcing The New Computer Chess Championship
A new Computer Chess Championship.

Announcing The New Computer Chess Championship

Aug 27, 2018, 8:00 AM |
44 | News

NOTE: This event is currently in testing. The first official event will start August 31st! 

The Computer Chess Championship is back with a new, always-on format and more chess engines as makes a major investment in the future of computer chess. 

After joining forces with the Komodo chess team earlier this year, continues its commitment to computer chess with it's most ambitious computer chess tournament yet.

The new Computer Chess Championship, available at, will pit the strongest chess engines in the world against one another in a variety of formats, settings, and time controls. The tournaments will run one after another so computer chess fans will always have something to watch. also has the most powerful computer of any engine-vs-engine tournament to date, featuring 96 cores of Intel's latest Platinum processors (full server details below).

The spectator interface was designed from the ground up to provide the best viewing experience for serious and casual fans alike. The new CCCC will be easy to follow, but will also allow viewers to dive into each engine's thinking, as all engines will display live principal variations (PVs)—a real-time peek into their thinking process and the lines they are considering. 

the new computer chess championship ui

The new Computer Chess Championship interface.

CCCC events will include the top chess engines in the world, chosen and tested for strength and stability, and seeded according to rating as specified by the most recent CCRL 40/40 list. Interesting and experimental engines may also be included. Engine authors have the option to submit development or optimized versions of their programs before the start of each event.

"Computer Chess matches are the wave of the future, and often provide more instructive moments than they are given credit for," said IM Daniel Rensch, chief chess officer of "One of the most interesting fun events I've ever commented on was the first Computer Chess Championship in 2017 with GM Robert Hess, and I'm looking forward to what this new system and season will bring."

With the updated format, will be continuously streaming the Computer Chess Championship on a dedicated Twitch channel (, where chess fans and curious gamers can gather to watch the games, root for their favorite engines, and chat during the tournament.

The computer chess championship will be available 24/7 on Twitch.

The computer chess championship will be available 24/7 on Twitch.

First Event:

The inaugural Computer Chess Championship in the new format will be called CCCC 1: Rapid Rumble, and will be a round-robin of 24 of strongest chess engines available. The tournament will run on beefy hardware and the latest software to produce the absolute top-quality chess played anywhere.

  • Time controls: Rapid (15|5)
  • Ponder: On
  • Opening book: No opening book
  • 46 threads per engine
  • 8192 MB hash
  • 6-man Syzygy and 5-man Gaviota TBs
  • All other UCI options set to default
  • Games will be played to completion (mate or draw) with no adjudication except for threefold repetition and the 50-move rule.
  • Tiebreaks will be determined utilizing the Sonneborn-Berger score

Round 1

  • Start date: week of Sept. 3
  • Round robin
  • 24 engines
  • 15|5 time control
  • Each engine plays every other engine twice (once as white, once as black)
  • Expected duration: 15 days

Round 2

  • Round robin
  • Top 8 engines from Round 1
  • 15|5 time control
  • Each engine plays every other engine 10 times
  • Expected duration: 8 days

Round 3

  • Heads up
  • Top 2 engines from Round 2
  • 15|5 time control
  • 200 games
  • Expected duration: 6 days

Technical Specifications:

The CCCC will run on cutting-edge technology to generate the best possible chess.

Technical Specifications for CPU Engines:

  • CPUs: 2 x Intel Xeon Platinum 8168 @ 2.70 GHz 33 MB L3
  • CORES: 48 physical (96 logical)
  • RAM: 256GB DDR4-2666 ECC Registered RDIMM
  • SSD: 2x Crucial MX300 (1TB) in RAID1
  • OS: Windows Server 2016

Technical Specifications for GPU Engines:

  • GPU: 4x Tesla V100 (64 GB GPU memory)
  • CPU: Intel(R) Xeon(R) CPU E5-2686 v4 @ 2.30 GHz
  • CORES: 16 physical (32 virtual)
  • RAM: 256 GB


The following 24 engines will play in the first new-format CCCC:

  • Andscacs (Andorra)
  • Arasan (USA)
  • Booot (Ukraine)
  • Chiron (Italy)
  • Deep Shredder (Germany)
  • Ethereal (USA)
  • Fire (Belgium)
  • Fizbo (USA)
  • Fritz (International)
  • Gull (Russia)
  • Houdini (Belgium)
  • Komodo (USA)
  • Komodo Monte Carlo (USA)
  • Laser (USA)
  • Lc0 (International)—This engine will run on a different configuration using powerful GPUs (to be announced)
  • Nemorino (Germany)
  • Nirvana (USA)
  • Pedone (Italy)
  • Senpai (France)
  • Stockfish (International)
  • Texel (Sweden)
  • Vajolet (Italy)
  • Wasp (USA)
  • Xiphos (Serbia)


The engines had to meet the following criteria to be eligible:

  • Currently under development (at least one release in the last two years)
  • 3000+ Elo (some exceptions may be allowed)
  • Must support SMP with a minimum of eight threads
  • Must be 100 percent stable during significant testing on our computer chess hardware
  • Endgame tablebase support preferred 

Follow all the action live at, and let us know what you think of the new tournament and interface in the comments. Check back frequently at the Computer Chess Championship site for results and upcoming events. 

More from pete
$2,000 Crazyhouse Championship Returns On

$2,000 Crazyhouse Championship Returns On

Stockfish Wins Computer Championship

Stockfish Wins Computer Championship