Why in "Test" all basic test passed, but in "Attemp" basic test failed?

In "Attempt" there are more basic tests than in "Tests".

Test are only the first tests, generally basic and easier ones. Attempt is the full battery of tests, with much more tests, random inputs, edge cases..., it is much more exhaustive. So there is nothing strange with what you are getting : your code handles basic tests but fails on the complete ones :)