Chessiverse review: scores and evidence
A Swedish company (Chessiverse AB, co-founded by IM John Bartholomew) offering 1,000+ neural-network bots calibrated by rating, Guided Play with an AI coach, daily tournaments against bots, 9,554 puzzles, 500+ opening guides and a "Chess DNA" profile built from imported games. No play against humans, no weaknesses named and counted, no documented spaced repetition.
Overall score
3.9/ 10
Rank
14/ 147
Languages
1
Yearly price
$89.99/yr ≈ €83 (annual price shown in the FAQ: monthly $12.99, annual $89.99, lifetime $299; $1 ≈ €0.92)
What the service is
Chessiverse is published by Chessiverse AB, a limited company registered in Sweden with its registered office at 21 Fleminggatan, Stockholm. Four partners set it up: Jonatan Pettersson, a former Spotify engineer, Björn Torstensson as chief executive, International Master John Bartholomew, and David Kramaley, the last two having previously co-founded Chessable. The service runs entirely in the browser with no app to install: you play against more than 1,000 neural-network bots calibrated by rating, solve 9,554 puzzles, follow more than 500 opening guides, and enter bot tournaments renewed every day, week and month. The business model combines a limited free tier, a Premium subscription advertised at $89.99 a year with a seven-day trial, and courses sold separately at a discount for subscribers. The footer copyright notice runs from 2024 to 2026.
Activity history
- 2026-08The most recent post went up on 24 August 2026 ("AI Chess: The Fastest Way to Actually Get Better at Chess"), after those of 18 and 8 August: the blog keeps to at least one post a month.
- 2026-05The comparison post "Best Free Chess Bots to Play Online in 2026" was published on 22 May 2026, setting the site’s free tier against competing platforms.
- 2025-09On 19 September 2025 the site published "How Chessiverse Bot Ratings Work", setting out how the bots are calibrated through bot-versus-bot games.
- 2024-12The bot system was overhauled on 6 December 2024 ("Updated Ratings & 40 New Bots"), followed on 8 December by the launch of PersonaPlay and its five bot categories.
- 2024The site’s copyright notice starts in 2024 ("© Chessiverse 2024-2026"), the first documented year of public activity.
The scores, evidence by evidence
Every score points to the page read and the fact found there. A fact documented nowhere is not credited: document it, then write to us.
APersonalized diagnosis
2.9A1 :2Importing your games (Chess.com, Lichess, PGN files)
https://chessiverse.com: "Upload PGN files" and Chess.com/Lichess import; level 3 requires both platforms AND PGN, so it is met, but importing PGN files one at a time is not specified; scored 2.
A2 :2Automatic engine analysis of every game
https://chessiverse.com/guided-play: "Every move is color-graded by an engine"; engine and depth not published.
A3 :1Recurring mistakes identified across all your games
https://chessiverse.com/chess-dna: 8 style markers and 31 archetypes; no mistake named or counted
A4 :0Types of mistakes covered (tactics, strategy, endgame, time…)
https://chessiverse.com/chess-dna: STYLE axes (Solid↔Sharp…), not a typology of mistakes; no list of patterns
A5 :2Written explanation of each mistake
https://chessiverse.com/guided-play: the coach colour-grades every move with "context about why moves succeed or fail"; general terms
A6 :0Stated verification of the diagnoses (procedure, rates)
No mention of reliability on https://chessiverse.com/faq or /chess-dna.
A7 :0Tracking each weakness over time
No change over time found on https://chessiverse.com/chess-dna.
A8 :0Comparison with players of the same rating
No comparison against a rating band on https://chessiverse.com/chess-dna.
BOpenings
5.0B1 :1Building a personal repertoire
https://chessiverse.com: "500+ opening guides", ready-made; no repertoire editor.
B2 :2Training the repertoire (drills, games)
https://chessiverse.com/chess-practice: "Practice positions" and "Bot training" on the openings; no spaced repetition.
B3 :0Spotting where you left your repertoire in your games
No detection of a repertoire deviation on https://chessiverse.com/chess-dna.
B4 :2Verification of the lines taught (engine, practice)
https://chessiverse.com/personaplay: opening books "based on millions of real human games" (sourced); no threshold published.
B5 :2Opening explorer and statistics
https://chessiverse.com: "opening guides with statistics" (external database); several databases not demonstrated.
B6 :2Explanation of opening plans and ideas
https://chessiverse.com/chess-practice: a Scandinavian Defence course with "Video lessons, Practice positions, Bot training" plus written guides (plans); traps and model games not found.
CTargeted training
3.7C1 :0Exercises drawn from your own games
No exercise drawn from one’s own games on https://chessiverse.com/chess-practice.
C2 :2Bank of tactical exercises (size, themes, rating)
https://chessiverse.com: "9554 puzzles"; rated bots; puzzle themes and ratings not detailed, so 5,000 or more is met, scored 2.
C3 :2Endgame training
https://chessiverse.com/chess-practice: "Endgame Mastery", with "curated practice positions" played against bots.
C4 :2Strategic and positional training
https://chessiverse.com/chess-practice: "Middlegames: typical middlegame plans and strategies" plus positions from masters' games
C5 :1Training defense and alertness
https://chessiverse.com/faq "Blunder guard" and /guided-play "threat check" during play; no dedicated defensive exercise
C6 :0Training calculation and visualization
No calculation or visualisation exercise on https://chessiverse.com/chess-practice.
C7 :1Difficulty matched to your real level
https://chessiverse.com/chess-bot-tournaments: "fields built around your rating"; no adaptive rating documented on the exercises.
C8 :0Spaced repetition (named algorithm)
https://chessiverse.com/faq: no spaced repetition mentioned
C9 :2Personalized training plan
https://chessiverse.com/faq: "Course study plans", Daily Achievements, a daily matchup; no personalised plan and no time budget
DPrice and value
4.2D1 :2What the free plan actually lets you do
https://chessiverse.com/chess-bot-tournaments: "Entry is free"; the bot roster is limited on the free tier, Chess DNA is free.
D2 :1Annual price of the full plan
https://chessiverse.com/faq: "Yearly — $89.99/year", about €83 (€76-150).
D3 :2Commercial transparency (price shown, trial, cancellation)
https://chessiverse.com/faq: "7-day free trial", "cancel anytime"; /tos: a 7-day refund; a trial WITHOUT a card and one-click cancellation not found.
D4 :0Number of paid tiers (how simple the offer is)
https://chessiverse.com: Premium (a subscription) plus "Course Discounts—enjoy Chessiverse courses at a lower price", so courses are bought separately
ERigor and honesty
3.3E1 :1Published evidence of effectiveness
https://chessiverse.com/blog (24/08/2026): "The Fastest Way to Actually Get Better", with no method.
E2 :0Chess verification of the content (positions, lines)
No information about content checking on https://chessiverse.com/faq.
E3 :2Transparency of the method (algorithms, code)
https://chessiverse.com/personaplay: neural networks, calibration "simulated over a million matches"; the analysis engine is not named.
E4 :1Marketing claims that can be checked (no overselling)
https://chessiverse.com/compare: "largest selection of bots", "dramatically better bot experience" (superlatives).
FContent and method
6.7F1 :1Courses organized by rating level
https://chessiverse.com/chess-practice: one video course (the Scandinavian Defence), with no level label.
F2 :2Course authors named and titled
https://chessiverse.com/about-us: "John Bartholomew … International Master" is a co-founder; one titled player only.
F3 :3Content formats (text, video, interactive)
https://chessiverse.com/chess-practice: "Video lessons Practice positions Bot training" plus text guides.
F4 :1Published method of progression
https://chessiverse.com/chess-practice: generic advice ("five to ten minutes of tactical problems"); no curriculum.
F5 :3How often the content is updated
https://chessiverse.com/blog: posts on 24/08, 18/08 and 08/08/2026, and 05/06/2026 (at least monthly, documented).
GPlaying and practice
5.0G1 :0Playing humans online (pool, anti-cheating)
https://chessiverse.com/compare: "Lichess is the best free chess platform for playing humans"; Chessiverse is bots only.
G2 :3Realistic artificial opponents
https://chessiverse.com/personaplay: neural networks trained "from millions of human games", calibrated by rating, with human-like thinking times.
G3 :1Replaying one specific position against the machine
https://chessiverse.com/faq: "Can I analyse a game I played somewhere else?"; replaying one’s own position against a bot not demonstrated; FEN not mentioned, so a default of 1 is not proven, 1 kept for the practice positions.
G4 :2Tournaments and organized competition
https://chessiverse.com/chess-bot-tournaments: "New events every day, week and month" (against bots).
HExperience and accessibility
1.3H1 :1Platforms available (web, iOS, Android, desktop)
https://chessiverse.com: "no app, no download", responsive interface.
H2 :0User ratings and reviews (stores, press)
No store listing; no third-party review cited on https://chessiverse.com.
H3 :0Interface languages available
https://chessiverse.com: English only
H4 :0Accessibility (keyboard, screen reader)
No mention of accessibility on https://chessiverse.com/faq.
H5 :1Offline use and known incidents
https://chessiverse.com: everything runs in the browser and depends on the server; no incident reported, no status page.
IPreparation and study
1.7I1 :0Preparing for a named opponent
https://chessiverse.com/faq: opponents are bots only; no report on a named player
I2 :1Annotating and sharing games (studies)
https://chessiverse.com/faq: "What if" variation saving and "Savable Lessons"; no sharing by link
I3 :0Entering a game played at a club (photo, scoresheet)
https://chessiverse.com/faq: PGN import only; no entry on a board and no photo mentioned
I4 :1Searching your games (filters, position)
https://chessiverse.com/faq: game history and "Game export capability"; no search filter
JHuman coaching and community
2.5J1 :0Access to human coaches
No human coach on https://chessiverse.com (the creator-program is for content creators).
J2 :1Size and activity of the community
https://chessiverse.com/blog: a Discord, discord.gg/Js5uPNxEHj, is mentioned; member count and daily activity not found; the tournaments are against bots, not a club or team.
J3 :0Tools for trainers, clubs and schools
No coach or club area on https://chessiverse.com/faq.
J4 :2Engagement mechanics (streaks, virtual currency, reminders)
https://chessiverse.com/chess-bot-tournaments: trophies and "Trophy bots" with no virtual currency; a "Try Premium!" banner (a nag) found in the JS bundle.
KPersonal data and interoperability
4.4K1 :2Exporting your data (games, repertoire)
https://chessiverse.com/faq: "Can I export my games?" is listed; /privacypolicy: a copy of the data in a "machine-readable format".
K2 :1Protection of personal data (GDPR, hosting)
https://chessiverse.com/privacypolicy: Chessiverse AB, Stockholm, GDPR, but Google Analytics, Facebook and Posthog; servers not located.
K3 :1Public API and source code
https://chessiverse.com/faq: PGN import and export; no public API.
Also, outside the grid
Features found that no criterion measures. They do not count towards the score.
- Electronic board supported
- Speedrun mode against bots
- Guess the Elo against a mystery bot
- Bot-versus-bot games to watch