- Top
- 4 · Society, Civilization, Culture
- 43 · recreation, amusement
- 43C · sports, games and physical performances
- 43C5 · games of calculation and chance, e.g.: card games, gambling, puzzles, etc.
- 43C52 · board-games
- 43C521 · chess
- 43C521(+2) · chess (+ the contest (sports, games, etc.))
43C521(+21) · chess (+ the two sides (sports, games, etc.))