Some Forms Of Gambling
Hadhrat
Ali radhiyallahu anhu 
says that chess is gambling. He also says that the betting by children on walnuts is
gambling. Hadhrat Raashid Ibne Sa'ad and Hadhrat Hamzah Ibne Habeeb are also of the view
that the games of betting little children play with sticks, walnuts, eggs, etc. is also
regarded as gambling.
From the definition of gambling and from the explanation
of Sahaabah radhiyallahu
anhum 
and
Taabi'een, it becomes evident that the under-mentioned games of today are also forms of
gambling and falls under the severe warnings mentioned in the Qur'aan regarding gambling.
Horse Racing
The present-day horse racing where one stakes a certain amount on a
particular horse is in fact gambling. It is exactly that form, where loss and gain is
based on
something indistinct, where one person loses his initial amount and the
other wins a substantial amount.
All lotteries are also gambling and not allowed. Gambling
has taken hundreds of forms, which are present in businesses and market places. The
viewpoint and some common types are mentioned here.