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RE: Chess Puzzle of the Day (Dec 3, 2019) | Problema de ajedrez del día (3-Dic-2019)
Oh nice, !invest_vote did it's best even though I edited the comment for inserting it. Well, I'm coming back again as I just discovered lichess has an interactive lesson on this porticular chess problem. :-) https://lichess.org/practice/checkmates/knight--bishop-mate/
Great! That one is good to practise, too!