It is better to use your time to solve problemsets than to build them.
As long as existing problemsets meet your demands that's true of course.
But take a look at this diagram from my game at the club against a 1900 player.
FEN 8/p5pp/1pkpr3/5p2/1PPR1P2/8/P2R1KPP/4r3 w - - 4 25
White to move.
I played the black pieces and my last move was Re6?? blundering a pawn away. And hence the game.
Why do I have trouble with such a simple position while I fully analyzed a 10-fold more complex one in my post of june 17th with ease?
The reason is that you won't find much of such problems in problemsets.
Since I restarted playing in 1998 I have barely seen such positions on the board.
Because I avoided it.
But lately I changed my playing style. I want to develop a second weapon next to king attacks.
That weapon is to simplify to an ending and try to win that with endgame technique.
It is easy to analyze the above game.
But what am I going to do about it?
Note to self: don't blunder pawns away in the future.
That's not going to work of course.
Analysis will only be useful if I use it as feedback to correct my play.
That seems logical, but how many people do that?
When I make a problemset with exactly these kind of problems I can become familiar with the patterns and the next time my ears will fall off by the ringing of alarmbells in the above position.
Just as it is now at this very moment impossible to walk with my King into a pin without a red alert flashing.
You will probably have a hard time to find a problemset that covers the above kind of problem.
So why not make one of your own?
That's not as hard as it looks:
- Take a good gamebase.
- Select with SCID the games with the material balance as above.
- Let Fritz annotate the selection.
- Export the selection as PGN and filter only the games that meet certain conditions by processing Fritz' annotations.
- The problem starts one move before Fritz added a "!"
The next time CTS is down I will do that (O no, thanks to Blue Devil I will work with PCT then:)
Speaking of which, even Margriet dropped her Sudoku addiction for PCT.
As Spacecowboy pointed out the problemset can be maintainted with Bookup.
Bookup has a training tool for exercising.