database explorer

Can someone please explain this logic. It doesn't make sense to me.

(please see attached database explorer screenshot)
There are 10 games in the database with this position, right? (3+1+1+5)

Out of those 10 games:
- Three are the move Qh4+. 3/10 = 33% (not 60%)
- One is Nf6 and one is exd4. 1/10 = 10%

Out of those 10 games, 5 games contain some other move. (half of them). 100% makes no sense at all.

These percentages are wrong. It should show the possible moves as a proportion of the total database entries. This is a Masters database. EACH entry is as valid as the next. The percentages should add up to 100%. 200% is not logical.

I don't know. I need study chess softwares.

I'm pretty sure that it's everything else added up. So 60+20+20 = 100 and 3+1+1 = 5. If you go to that line in the explorer, it isn't actually clickable.

@MountainManJoe said in #1:
>
Nope there are only 3+1+1=5 games. In each position, all the moves ever played are listed. There is no "Other " moves. If there were other moves played in that position which is in the database, they would be listed same as Qh4+, Nf6 and exd4.
The bottom section ( the light blue one ) shows the total games which reached till that position and win : draw : loss ratio from that position. That section is always 100% ( 100% of the games which reached this position, got to this position. What a surprise)
Also 3/ 10 is 30% not 33%

a big greek sigma is used in mathematics as the symbol for summation, see e.g. here: en.wikipedia.org/wiki/Summation
if you remember that, it's easy to know what the last line means.

You can clearly see how many games the database have on that specific variation. just 1, and that side won, so, whats the percentage of winning by winning the single game? 100%.