Originally posted by pwnguin
While I know of many training problem books for tactics, are there any good problem books for middlegame strategy and the endgame?
Specifically, all I can find for strategy are books like "It's your move" by ward, which give only 50 problems, and they are tainted by hints and other things. I need something like Reinfeld's 1001 problems, but for middlegame strategy.
Strategy is a long term thing unlike tactics so there is no immediate and obvious best response.
In any given position there may be a number of strategic ideas that come into play such as doubled or isolated pawns, open files (for Rooks), exchanges of N for Bs because the pawn structure prefers the one or the other. Depending on the dynamics of the position there may be an obvious best play but very often these change move by move.
Strategy is harder to get right than tactics. Tactics is immediate and tactical plays can win or lose quickly. Tactical plays tend to arise as a result of adopting correct strategic principles earlier. tactics being short term lends itself to puzzles in a way strategy does not.
With strategy you need to study a position and see how a subtle play now has a dramatic effect later in the game. Some openings particularly aim for this, for example the Ruy Lopez Exchange in which black hopes to benefit from the B pair and will seek to open lines for them whereas white hopes to capitalise long term on blacks ruined pawn structure - the benefits of this stategic play may only become apparent 30 moves later when the pawns are weak and fall or the strong B pair creates tactical opportunities that wins material.
So books on strategic puzzles probably do not exist other in the most general of ways.