2007 System
As compared to 2006 9-round system, this year, during the arbiter course, we noticed that SIXGA has considered 3 other alternatives before the selection of 2-round knock out system for the top 4. The other two alternatives were 3-round knock out system for the top 8 (in this case, no incentive for the remaining 32 players to continue with the last 3 rounds) and 2-round knock out system for the top 4 with 2 losers from 1st round (Round 8, this year) returning to play with the main body in the last round (Round 9 this year, a bit unfair for the two losers).
As for the actual situation this year (40 players), after 4 rounds, only one with full 4 points, i.e. (add 50%) minimum of 6 rounds is enough for this year.
As there are so many (6) of 5 points, mainly due to unexpected none with 5.5 points.
In all, this year 9-round method is still a better system, my personal view only.
No of Boards with draw results
This could be another way to study whether the number of rounds is enough.
Out of 20 boards per rounds, the number of Boards with draw results as below :
Round 1 : 2
Round 2 : 3
Round 3 : 5
Round 4 : -
Round 5 : 5
Round 6 : 5
Round 7 : 7
So, it is increasing, .... any relationship with the number of rounds ?!