Choosing an optimal path
Wednesday, November 24, 2010 7:35:03 PM
Mapmaker: Uzi Schweizer
Israeli sport association for schools holds 2 regional leagues (north and south) for orienteering. Approximately 300-400 school kids participate in 4 regional events and a finals event at the end of the year. This was the first northern event and I decided to come and train on the given courses.
The race was held in a score format due to the small scope of the map, and I was surprised by the interesting route choices.
I ran the master map (32 controls) and debated quite a bit on the optimal course.
These were my binding guidelines:
1) The finish has to be entered from south west.
2) As few as possible empty running legs (long running paths with no controls).
The main problems were control 44 (The southern control) and the eastern corner, Which is located between the start and the finish.
Suddenly I saw the loophole, tracing the route backwards (from end to start), I saw the correct route. I started from control 43 (center on the road) and then took the western controls (anticlockwise), from control 60 (on the road) to control 44 (a steep climb at first), back through the same route to the eastern controls (all higher than the other controls), I collected the eastern controls and the north western controls running on the edges of the map anticlockwise, I came back to control 31 and then took the last controls densely located near the end.
This was quite a puzzle!!!