Glossary

DMP: Double Match Point

Nactation: A compact notation system created by Nack Ballard. I don't use it all that often, because it can get complex. However, the basics are simple, and I find them helpful when discussing the first few moves of the game. I generally stick to the symbols below, which are covered in the first couple of sections of Nack's Nactation Tutorial.
S = split
Z= reverse split
$ = slot
R = run
P = point
D = down
U = up
Opening: The first move of the game

Op: Opponent

PR: Extreme Gammon's Performance Rating

PWC: Project World Class

Reply: The second move of the game

Session Play (SP): Traditionally called money games and, more recently, unlimited games. I prefer the term session play (or session games). In session play, each game is distinct and independent of the games that come before and after it (as opposed to match play, where strategy can change based on the match score). The cube is used and both gammons and backgammons count. Unless otherwise noted, the Jacoby rule is not in effect.

XG: Extreme Gammon



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