online game database and explorer

365Chess review: scores and evidence

Item: 365Chess
Rating: 2.75
Author: ChessPivot

365Chess is a 4.4M-game database with an opening explorer, a per-player explorer, position search, an analysis board (PGN/FEN), rated tactical puzzles and play against Stockfish; supporters get personal databases and PGN export. It does not analyse the player’s games automatically.

Read on August 30, 2026 from the service’s public pages — every score cites the page read.

Overall score

2.8/ 10

Rank

49/ 128

Languages

Listed price

€20/yr (Basic Supporter, tiers €20-100, annual price shown on 365chess.com/supporters.php).

Official site

What the service is

365Chess is an online game database run by the US company 365Engage LLC, which trades as 365Chess (privacy policy effective 1 March 2021; data is processed in the United States and no postal address is published). The site’s Wikidata entry lists a 2007 inception and an owner named Jorge Martínez; the site itself publishes neither a launch date nor a team page. The service gives access to more than 4.4 million games searchable by player, opening, ECO code, year or position; it offers an opening explorer with statistics, a per-player opening explorer, an analysis board powered by Stockfish, tactical puzzles with a rating, play against Stockfish at adjustable strength, a blog and player rankings. The model is free with advertising and quotas (25 puzzles a day for basic members); the "Supporter" status costs €20 a year at the basic tier (tiers up to €100 carry the same benefits) and unlocks unlimited search, personal databases, the player explorer, PGN download and an ad-free site. 365Chess does not automatically import games played on Chess.com or Lichess, does not analyse a player’s whole game history and names no recurring mistake; it has no mobile app and its interface exists in English only.

Activity history

2024-07On 25 July 2024 the blog publishes an article on the 2024 World Championship (Ding Liren vs Gukesh), one of the few dated pieces of content on the site.
2023-09A thread opened on 11 September 2023 on the Chess.com forum, "365Chess.com has improved, greatly!", points to a reworked openings page (opening.php).
2021-03The current privacy policy is effective 1 March 2021; it names the operator as 365Engage LLC dba 365Chess and Google as advertising network.
2007Wikidata dates the inception of 365Chess to 2007 and credits Jorge Martínez as owner; the site’s privacy policy carries "© 2007-2026".

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

1.3

A1 :1Importing your games (Chess.com, Lichess, PGN files)

https://www.365chess.com/supporters.php — "import your game in pgn notation or set up a position from a FEN" (one game at a time)

A2 :1Automatic engine analysis of every game

https://www.365chess.com/supporters.php — on-demand analysis board

A3 :1Recurring mistakes identified across all your games

https://www.365chess.com/ — personal database analysed by the Opening Explorer: statistics, no mistake named

A4 :0Types of mistakes covered (tactics, strategy, endgame, time…)

https://www.365chess.com/ — no typology

A5 :0Written explanation of each mistake

https://www.365chess.com/ — figures only

A6 :0Stated verification of the diagnoses (procedure, rates)

https://www.365chess.com/ — no mention

A7 :0Tracking each weakness over time

https://www.365chess.com/ — no history

A8 :0Comparison with players of the same rating

https://www.365chess.com/ — no comparison

BOpenings

3.3

B1 :1Building a personal repertoire

https://www.365chess.com/supporters.php — "Openings Trainer" and personal databases; no repertoire editor found

B2 :1Training the repertoire (drills, games)

https://www.365chess.com/supporters.php — "Openings Trainer" listed, how it works is not documented

B3 :1Spotting where you left your repertoire in your games

https://www.365chess.com/ — statistics on one’s own games through a personal database

B4 :0Verification of the lines taught (engine, practice)

https://www.365chess.com/ — no verified taught line

B5 :2Opening explorer and statistics

https://www.365chess.com/supporters.php — explorer over 4,400,000 games + Player’s Opening Explorer; no evaluations

B6 :1Explanation of opening plans and ideas

https://www.365chess.com/ — opening pages (names, moves); no explanatory content found

CTargeted training

1.1

C1 :0Exercises drawn from your own games

https://www.365chess.com/ — none

C2 :1Bank of tactical exercises (size, themes, rating)

https://www.365chess.com/puzzles.php — "Thousands of chess puzzles", tactical rating; volume and themes not published

C3 :1Endgame training

https://www.365chess.com/supporters.php — "Endgames" entry (Training menu) with no module described

C4 :0Strategic and positional training

https://www.365chess.com/ — no positional exercise

C5 :0Training defense and alertness

https://www.365chess.com/ — none

C6 :0Training calculation and visualization

https://www.365chess.com/ — none

C7 :1Difficulty matched to your real level

https://www.365chess.com/puzzles.php — "Receive a tactical rating"; adaptivity not documented

C8 :0Spaced repetition (named algorithm)

https://www.365chess.com/ — none

C9 :0Personalized training plan

https://www.365chess.com/ — none

DPrice and value

7.5

D1 :2What the free plan actually lets you do

https://www.365chess.com/supporters.php — explorer, search, puzzles "limited" on the free tier

D2 :3Annual price of the full plan

https://www.365chess.com/supporters.php — "1 Year €20"

D3 :1Commercial transparency (price shown, trial, cancellation)

https://www.365chess.com/supporters.php — price displayed; neither trial nor refund (terms page returns 403)

D4 :3Number of paid tiers (how simple the offer is)

https://www.365chess.com/supporters.php — a single "Supporter" status (€20-100, same benefits)

EEvidence and transparency

2.5

E1 :0Published evidence of effectiveness

https://www.365chess.com/ — no data

E2 :0Chess verification of the content (positions, lines)

https://www.365chess.com/ — no information

E3 :1Transparency of the method (algorithms, code)

https://www.365chess.com/supporters.php — Stockfish named, nothing else

E4 :2Marketing claims that can be checked (no overselling)

https://www.365chess.com/puzzles.php — factual wording

FContent and method

1.3

F1 :0Courses organized by rating level

https://www.365chess.com/supporters.php — "Chess Courses" in the menu, content not found

F2 :0Course authors named and titled

https://www.365chess.com/ — authors not identified

F3 :1Content formats (text, video, interactive)

https://www.365chess.com/ — text blog

F4 :0Published method of progression

https://www.365chess.com/ — none

F5 :1How often the content is updated

GPlaying and practice

1.7

G1 :0Playing humans online (pool, anti-cheating)

https://www.365chess.com/ — no play against humans

G2 :1Realistic artificial opponents

https://www.365chess.com/supporters.php — "Stockfish choosing different levels of strength"

G3 :1Replaying one specific position against the machine

https://www.365chess.com/supporters.php — analysis from a FEN; playing the engine from a position not found

G4 :0Tournaments and organized competition

https://www.365chess.com/ — none

HExperience and accessibility

1.3

H1 :1Platforms available (web, iOS, Android, desktop)

https://www.365chess.com/ — web only

H2 :0User ratings and reviews (stores, press)

https://www.365chess.com/ — no store rating, no third-party review consulted

H3 :0Interface languages available

one language found — https://www.365chess.com/fr/ — 404; site in English

H4 :0Accessibility (keyboard, screen reader)

https://www.365chess.com/ — no mention

H5 :1Offline use and known incidents

https://www.365chess.com/ — server-based; no incident reported

IPreparation and study

5.8

I1 :2Preparing for a named opponent

https://www.365chess.com/supporters.php — "Player’s Opening Explorer" + search by player (chess-games.php): repertoire and results

I2 :1Annotating and sharing games (studies)

https://www.365chess.com/supporters.php — "Bookmark Analysis" on the analysis board; sharing by link not found

I3 :1Entering a game played at a club (photo, scoresheet)

https://www.365chess.com/search_position.php — moves entered on the board, FEN/PGN, Board Editor

I4 :3Searching your games (filters, position)

https://www.365chess.com/ — "Create your own Database" with the same tools: position search, explorer

JHuman coaching and community

0.8

J1 :0Access to human coaches

https://www.365chess.com/ — none

J2 :0Size and activity of the community

https://www.365chess.com/ — no community

J3 :0Tools for trainers, clubs and schools

https://www.365chess.com/ — none

J4 :1Engagement mechanics (streaks, virtual currency, reminders)

https://www.365chess.com/ — tactical rating + advertising ("Ads FREE" for supporters)

KPersonal data and interoperability

4.4

K1 :2Exporting your data (games, repertoire)

https://www.365chess.com/supporters.php — "Download Games as PGN" (supporters)

K2 :1Protection of personal data (GDPR, hosting)

https://www.365chess.com/view/privacy-policy/ — GDPR section, but "advertising and analytics partners", hosting not specified

K3 :1Public API and source code

https://www.365chess.com/ — PGN; no API

Also, outside the grid

Features found that no criterion measures. They do not count towards the score.

4.4M-game database updated every week
Endgame search by material
Endgame training against the computer
ECO encyclopaedia with statistics
Player rankings (by ELO, A-Z)

Sources consulted

Services with a similar profile

The three services whose category profile is closest — a distance over the eleven scores, computed, never chosen.

Back to the comparison How the scores are awarded