The following system, known as "The CD System", is really simple. You back any horse that is a previous course/distance winner in the race, provided there are no other previous course winners in the race. (It doesn't matter how many other distance winners there are in the race.)

12/2/2005

No qualifiers.

19/2/2005

Moonee Valley
Race 5: Rockford Bay UNPLACED ($15.00; no place betting)

Eagle Farm
Race 1: Sir Monashee FIRST $4.20/$1.30 ($4.80 at 1/4 odds)

26/2/2005

Caulfield
Race 1: Lodger UNPLACED ($31.00 at 1/4 odds)

Canterbury
Race 2: Carry On Cutie FIRST $2.60/$1.50 ($3.10 at 1/4 odds)

5/3/2005

No qualifiers.

Selections: 4
Wins: 2 (50.00%)
Places (including wins): 2 (50.00%)
Win return: $6.80 (SuperTAB); $7.90 (SP)
Place return: $2.80 (SuperTAB); $3.48 (SP)
Number of runners: 31 (12.90%)
Number of winners: 4 (50.00%)
Relative frequency factor: 3.8750 (50.00/12.90)
Expected number of winners: 0.6298
Actual-to-expected ratio: 3.1754