How we could criticise J. R. R. Tolkien's The Lord of the Rings from its gerne which is a high fantasy work?
what the fantasy add to the form of the story and how it recived as literary work of fiction
Lord of the Rings is very well received by readers and within fantasy literature community but this is not the case with literary critics.
Despite the fact that it is an immensly popular work it is not being studied a lot. Unfortunately, many literary critics treat fanasy as a trivial literature and refuse to study this genre in close detail.
Personally, I'm disappointed with the status of many works like Lord of the Rings and think they deserve far more critical interest then they are receiving.
As for the story itself it is an essentially a fantasy story. The story is set in a fantasy land and all the characters are consistent with the idea of the story, development and history even with earlier works by Tolkien such as Silmarillion. It is hard to imagine how a story like this one could be set in any other genre than fantasy.
I generally dislike the tagging of the Lord of the Rings as a "fantasy" work, mainly because nowadays "fantasy" is related with light teenage novels that make no real input--> and I think that's the reason why fantasy literature is just "trivial literature" for the critics.
Fantasy works (short stories specially) were well received during the late 19th century and the first half of the 20th century, but it got to a point where the subjects just began to repeat themselves a lot and on the second half of the 20th century it fell a bit into oblivion, with few exceptions such as J. G. Ballard's dystopian sci-fi novels, Stephen King's horror stories and J. K. Rowling's Harry Potter.
Few critics and writers (W.H Auden, C.S Lewis) appreciated The Lord of the Rings for what it was.
I, personally, put The Lord of the Rings alongside works of importance such as Beowulf, Sir Gawain and the Green Knight, The Story of Sigurd the Volsung, etc. To me LOTR is an epic poem in the form of a novel.