Every game, classified
Chessiac walks your archives month by month, reads the PGN, and matches the move order against an ECO classifier — family first, then variation.
Opening Repertoire Chronicle
CHESSIAC
Every game you have ever played on Chess.com, classified by ECO code and drawn as an illuminated skill tree — so you can see, at a glance, which openings you own and which ones quietly lose you games.
✦ No account, no upload ✦ Reads the public Chess.com API ✦
500+
ECO codes mapped
2
Mirrored trees
6
Time epochs
0
Games uploaded
The problem
You know your rating. You don't know your repertoire.
A rating is one number for a thousand different positions. It cannot tell you that your Ruy Lopez is quietly carrying you, that the Sicilian has been bleeding you for months, or that you have played the French exactly four times and have no idea whether it suits you.
Win rate at every depth
Wins, draws, and losses are aggregated up the tree. A branch that looks healthy at the family level often has one variation dragging it down.
Verdicts, not just numbers
Openings above 65% are marked Strong, below 35% Weak — with a 5-game floor so noise never earns a verdict.
How it works
Three steps, no account
I
Name thyself
Type a Chess.com username. It is remembered locally so the next visit skips straight to the tree.
II
The archives are read
Monthly archives are fetched from the public Chess.com API with live progress, then parsed in the browser. Nothing is sent anywhere.
III
The tree grows
White branches left, Black branches right, from a shared centre. Click any node to open its variations.
The gateway
Live component — try focusing the fieldThe waiting ritual
Determinate progress — six pieces in orbitReading archive 17 of 25 — 68%
The centrepiece
The Skill Tree
Two kings at the centre. White's repertoire grows to the left, Black's to the right, each family carrying its own heraldry — a country silhouette for the geographic openings, a medieval glyph for the rest.
Sample data for illustration — click a king, then any opening, to open its branches
✦ Bobby Fischer
Berlin Defense — C65
Closed Variation — C84
Exchange Variation — C68
✦ Giuoco Piano lineage
Giuoco Piano — C53
Two Knights Defense — C55
Jobava London — D02
✦ Garry Kasparov
Najdorf Variation — B90
Dragon Variation — B70
Alapin Variation — B22
✦ Anatoly Karpov
Advance Variation — B12
Classical Variation — B18
✦ Wilhelm Steinitz
Winawer Variation — C15
The interface
Every surface, illuminated
Chessiac is one continuous piece of parchment. Filters read as marginalia, verdicts as illuminated cards, results as heraldic bars — nothing looks like a dashboard widget dropped onto a theme.
Insights
Four verdicts, computed above a 20-game floorFavorite
Sicilian Defense
173 games played
Strongest
Caro-Kann Defense
69% win rate (88 games)
Weakness
London System
32% win rate (41 games)
Least Played
French Defense
Only 9 games
Filters
Live component — epoch refetches, format refilters in placeResult bars
Colour never carries the meaning alone — W/D/L labels always accompany itFull — family level
Compact — variation level
The design system
Aged parchment, gold leaf, iron gall ink
One palette, two typefaces, one 8-point rhythm. Gold is reserved for borders, seals and the single primary action — never for body text, where it would fail contrast.
Palette
Tokens as defined inglobal.cssType
Cinzel Decorative for titles, Cinzel for structure, Crimson Text for reading
Display — Cinzel Decorative 900
CHESSIAC
Heading — Cinzel 700
The Skill Tree
Label — Cinzel 600, .15em
Thy Repertoire Insights
Body — Crimson Text 400
Click a node to expand its branches. Each variation carries its own record, and the masters who made it famous.
8-point rhythm
Every gap, pad and margin comes from 4 / 8 / 12 / 16 / 24 / 32 / 48 / 64 / 96. Nothing is nudged by eye.
Five states, always
Default, hover, focus-visible, active, disabled — on every button, chip, node and field. Keyboard users get a 2px gold ring.
Motion with an off switch
Reveals run 150–500ms on transform and opacity only, and collapse to nothing under prefers-reduced-motion.
Begin
Find out what you actually play
One username. Every game you have played. The whole repertoire, drawn as one tree.
Runs entirely in your browser — nothing is stored but your name, and only on your machine.