EAS-Score is calculated with these rules:

1) Sacrifices: (percent*100) of the percent-values of the sacrifices (1-5+ pawnunits) calculated out 
of the won games by the engine, only. So, a weak engine (with a small number of won games) can get 
a high EAS-scoring, too, when the percent of sac-games in the won games is high (and the number of 
short wins). Higher pawnunits-sacs give bonus-points: 
1 pawnsac = 10x points  *** 2 pawnsac  = 50x points *** 3 pawnsac = 100x points 
4 pawnsac = 150x points *** 5+ pawnsac = 200x points *** 5+ Queensac = 250x points 

2) Very short won games (percent*100) of won games by the engine give these EAS-points:
60 moves= 18x points *** 55 moves= 27x points *** 50 moves= 42x points
45 moves= 68x points *** 40 moves= 100x points.  
Since V5.2, the move-limit is no longer fixed to 40-60 moves, but the average length of all won
games in the source.pgn is calculated. Reason is, that human games or adjucated engine games are 
much shorter than non-adjucated engine-games for example and the EAS-tools will now adjust the 
move-limits for short-win EAS-points to this "reality":

3) There is a new early sac bonus: If a sacrifice happens early in the game, the engine gets EAS-points:
(percent x 100 / 18)*(percent x 100 / 18). Early sac limit is: Average length of all wins in a database / 2.
percent means here: percents of early sacs in the pool of all found sacs of one engine. So, theoretically,
values of 0% or 100% can happen (but are very unlikely).
Additionally, if the average win game length of the engine is shorter than the average win game
length of all games in the source.pgn, the engine gets 5000 EAS-points for each move, their won 
games are shorter in average. These points are added to the early sac bonus, because I wanted to avoid
to make another category of points for this small bonus.

3) Bad draws: Bad draws are games, which were drawn before endgame (material check is done, the 
number of played moves does not matter) and draws after the engine had a material advantage of 
at least 1 pawn during a game, because the engine should win a game, if material was won. All
these bad draws are finally checked for a material disadvantage of at least 1 pawn: Because draws 
with material disadvantage prevented a possible loss and so, these games are no bad draws and are
not counted.
The formula for calculating the bad-draw EAS-points is a bit tricky:
a) The percent-value of all good draws (out of all draws, the engine played) by the engine 
is calculated (all draws - bad draws) and rounded: Example: Engine had 23.7% bad draws, then 
the value here is 76 (100% - 23.7% = 76.3% (good draws), then rounded).
b) This value is exp3. Means: 76*76*76 = 438976, then divided by 3000 = 146
c) This value is exp2. Means: 146*146 = 30625 
So, the engines gets 21316 EAS-points