You know, with my previous comment about counting attack vs. defense, I did say "all things being equal". The situation with the R, Q, R attacking the knight was not equal. Therefore, nuh uh. Most definitely the reward/risk ratio in points must be favorable, too.
Anyway, on post #148...
I am wont to move P to a3 to prevent the B to b6. I have found it most annoying to have a N pinned by a B...Ruy Lopez style...that I don't allow it in the first place by moving the RP3
That also allows the black bishop to have a back door option at a2, should it be attacked by pawns.
Unless I am planning a finachetto, I really like to put pawns at a3 and h3...as soon as I see the bishop line opening.
White has three attackers on e5 but Black only has two defenders. Can White take e5 without losing material?
Should White take e5?
(Hint: Don't rely on counting numerically pieces, count piece values too...what you give up and what you get)
White can't capture on e5.
After 1.Rxe5 Rxe5, the move 2.Qxe5 can't be played because of 2...RxQe5. Also, after 1.Rxe5 Rxe5 2.Qf1, White is down the exchange by 2 pawns.
I just did some mental moving of pieces, with total possible captures. After 1.RxNe5 BxRe5 2.QxRe5 RxQe5 3.RxRe5, the endgame is White with one rook and two pawns vs. Black with one queen and three pawns.
I need to do a lot of this...visualizing what the board will look like after a series of captures. It's much easier when I close my eyes, because I can see pieces erased from the board. When I look at the board, the pieces are still there, which makes it more difficult to see what would happen if I took on e5.
This is one of the techniques I use when practicing a new song on the piano, guitar or saxophone. I close my eyes and see my fingers moving over the keys/strings. I can learn the song faster, and the new patterns stick longer. They somehow go deeper into the brain. I've been doing this for decades, so whatever part of the brain it is that I've been using for all these years, it's received plenty of exercise.
Thanks for the calculation puzzle. I am creating and practicing lots of these kinds of puzzles, so that I don't burn time on the clock by going into a deep think all the time. The other benefit is that I will be less likely to lose material (hang pieces) due to errors in counting. That alone will easily take me over 1000 in Live Chess.