Basic about hockey you should know (Part 3)
The international competition organization is the International Ice Hockey Federation (IIHF). Ice hockey was held at the Winter Olympics from 1924, also the Hockey League was added to the 1998 Winter Olympics.
The National Hockey League (NHL) is considered to be the largest professional league tournament in the world. The rules at the NHL tournament are a little different from the rules of the Olympics. The international ice hockey law is based on Canadian rules in the early 1900s.
Hockey sticks on an L-shaped tape, made of wood, graphite or composite with sticks can lie close to the ice when the player holds the stick upright and according to the law can bend in both left and right directions.
Inline hockey is a roller hockey variant that is similar to the way ice hockey plays because inline hockey comes from this subject. The game consisted of two sides competing against each other, each with a goalkeeper and four players using roller skates, on a dry field divided into two halves by a central line, also two disciplines grid at either end of the yard.
The match takes place in three rounds, every 15 minutes with the lines on the course will follow the rules of the hockey rules. Icing errors are also counted but are often considered to be the fault of taking the bridge away from the defensive area.  The executing agency is IIHF, but a number of laws and organizations have different rules than IIHF’s laws such as USA Inline or Canada Inline.
Quad hockey, international hockey, or Hoquei em Patins, a generic name for patin sport that existed long before the inline skates were invented. This sport was a performance at the 1992 Summer Olympics.
Above are basic types of hockey in the world. Hope the information is useful for you.