(PUFFIN PB [USA?] 1985)
ILLUSTRATED BY PETER WILKES
I think this was first printed in USA, then possibly in the UK.
There was also a German edition entitled Das Gluck Auf Der Rennbahn
SUMMARY: An unusual pony role playing game book in which you change the outcome of the story by choosing various options. You take the role of an aspiring equestrienne who is setting out to make her name in the horse world. Suitable for a wide range of ages as the main character is an adult and there are romantic elements to the plot. Worth a look if you are feeling bored and want to try something different.
PONYMAD RATING 2-3 HORSESHOES
I am not 100% sure of the publishing history of the book. I am fairly sure it was published in the USA, but not certain whether there was a UK edition too. Sadly I no longer have my copy to check! The book is not easy to find in the UK, but fairly easy to get hold of in the USA.
There is also a German language edition which has a much nicer cover than the rather garish one on the British edition.