How deep must your puzzle be?
Since May 1st I experimented with tactical puzzles that are 3 moves deep (5 ply). That definitely worked. Somewhere in the summer, I decided to give 4 movers a go (7 ply). After a few months, my conclusion is, that that works too, but it is not as efficient as 3 movers. So I'm working with those 3 movers again. My picture of both the openings and the middlegame is pretty much complete, so I know exactly what to study positionally the coming years. The boundaries are clear: Piece exchanges Restriction of enemy pieces by pawns Increase piece activity by pawn moves CM Kabadayi is my guide here. This means there will be one loose end the coming years: the endgame. I will study my five new openings and the related middlegames positionally, and do tactics on a daily basis. Since I don't want to divide my attention, energy and time too much, I accept that I will screw up a won endgame regularly. I consider that as a luxury problem. For now.