I know praxis is always the answer to becoming a better player, but I'm hoping someone can recommend some good material for developing a strategy after the opening. Years ago I spent too much time and energy learning openings, and to my detriment ignored the middlegame and endgame. Sometimes I find myself in a position with most of the pieces exchanged away without much of a plan about what to do next. I do relatively well with puzzles when I know there is a solution, but in a game I'm lost if I don't see an obvious tactic.
I know some middlegame theory (e.g., centralize pieces, block isolated pawns, rooks on open files, the bishop pair) but I'm miserable at endgames. I sometimes get lucky, but I really have almost no idea what I'm doing once most of the pieces are off the board. Here's a good example of what I mean. In this game Stockfish evaluates it as -1.7 for black. Should have been a relatively easy win, but after swapping the pawns I didn't know what to do. I offered up a draw instead of fighting on.
I know some middlegame theory (e.g., centralize pieces, block isolated pawns, rooks on open files, the bishop pair) but I'm miserable at endgames. I sometimes get lucky, but I really have almost no idea what I'm doing once most of the pieces are off the board. Here's a good example of what I mean. In this game Stockfish evaluates it as -1.7 for black. Should have been a relatively easy win, but after swapping the pawns I didn't know what to do. I offered up a draw instead of fighting on.