How many variations every group has
Inside the variations of the groups A to E, outside the largest opening families. Tap a ring to highlight it.
PART I · WHAT IS PLAYED
The tree, in numbers.
Every volume has 100 codes, but not equally many variations
The most branched openings
Number of named subvariations per opening, coloured by volume.
The most frequent first moves and how the tree branches
Choose the first move on the left. On the right: how many different move sequences there are after every half-move.
PART II · FROM GAME DATA
How it is played, not only what.
Winning rates for White, draw and Black
- White wins
- Draw
- Black wins
Popularity by decade
Share of all games of the decade, in per cent – how the repertoire changed.
rarefrequent
Trends over the years
Average game length and short games
The most frequent opponents
- Wins
- Draw
- Losses