The 2022 Atomic World CHAMPIONSHIP

The list of participants (and their ratings/calculations) are listed below. Week 1 matches (officially) begin on Monday, September 12, 2022. You may play ahead if your opponent is known. Seed Players Perf Rating Perf Link Best Rating Game Link Seeding Rating 1 vlad_00 2651 2563 2607 2 fast-tsunami 2436 2516 […]


The 2022 Lichess Atomic Chess World Championship 1. Scope 1.1 The Lichess Atomic Chess World Championship for 2022 is to open the registration period on 1 August 2022. The registration period will end at 00:00 UTC on 1 September 2022. The first round of matches will commence at 00:00 UTC on 12 September 2022 and continue […]


Special Announcement for 2021 Note: To celebrate the 25th anniversary of Atomic Chess, I’ve decided to run two separate tournaments to celebrate this chess variant and community. Many players today may have never experienced the early days of a brand new variant. The thrill of discovery. Everybody on a level playing field. No opening book […]

Atomic Chess Pawnless Endgame Mate Studies

[First Edition : 25 July 2002][Second Edition : 15 March 2005][Second Edition Enhancement: 08 October 2008] An interactive LiChess study of the important critical positions is here. The purpose of atomic mate studies is to discover the smallest amount / combinations of material with which you can mate in atomic. There are several unique positions […]

Annotated Atomic Games

Annotation is not a skill that I naturally have – in fact, I tend to avoid annotating or even examining games for the most part. But if you want to improve, you’ll eventually have to look at some games and understand what went on within them and why the moves were made. As a sample […]

2019 Atomic World Championship Entrants (and Results)

Ratings subject to change as data comes in or is found. Rankings will all be ‘TBD’ until the list is finalized. For now, these are the order in which people have registered. Prelim Ranks Name Base Rating Performance Rating Seeding Rating 1* onubense 2450¹ (2427, 2828) 2540 2495 2* Xeransis 2300¹ (2404, 2623) 2476 2388 […]

The 2019 Atomic World Championships

Format: Modified single-knockout with a cut at the top 8, with potential additions beyond this point, transforming to double-knockout. The 2018 Atomic World Championship was a double elimination knockout tournament that was run surprisingly well, but had a number of incidents that the rules have been changed/modified to address. First and foremost, the double knockout […]

The 2018 Atomic World Championships

For the third year in a row, tipau organized an Atomic World Championship on lichess, following the successful organization of the 2016 and 2017 editions. Challonge was once again used – as this was a double elimination knockout format. The bracket can be found at: This year, the entrants list topped out at 65 […]

The 2017 Atomic World Championships

After the successful completion of the 2016 Atomic World Championship, tipau ran another edition in 2017. There were 44 entrants for this edition: Seed Name Rating Best Average 1 onubense 2813 2813 2813 2 Arka50 2641 2824 2733 3 tipau 2629 2805 2717 4 pashpash 2612 2745 2679 5 OneFallWeAllFall 2552 2642 2597 6 moustruito […]