nihongokyoshi-net.com/2020/01/20/jlptn1-grammar-tatokorode/
Explains the N1 grammar pattern たところで with English translations and nine example sentences showing how it expresses that an action yields no expected result.
GrammarJLPT and other testsIn JapaneseJLPT N1ConditionalsExample sentencesJLPTSentence patternsJLPT N3