Btw try these calculation puzzles (not my own puzzles)
Found on post 161.
I tried the second puzzle and got the first move right, but brought the evaluation back to equality after a few more moves. So, the easy calculation puzzle was too hard for me. What book did these puzzles come from?
Anyway, thanks for posting them.
Well actually they came from the April edition of the CB magazine
(I get it for free since I bought Chessbase 11 + Megabase 2011. They also sent me a free FritzTrainer video on the Benko Gambit which I don't play lol-I wish it was Ftacnik's on the Sicilian Defense, but hey its a free gift).
So these problems aren't really supposed to be easy. They come from top master games. And the CD's also explain some of these tactics in detail. Cb magazine also has endgame problems too but I haven't bothered solving em cause I just hate endgames. And I don't quite understand them in the magazine, too complex for me.
You say u got the 1st move right, but not the 2nd move :O That move is easier :P
Here is the solution to the 1st one...
I bought CB #136 because it had a picture of Vishy Anand on the cover and analysis of his WC games. The content is amazing, but way over my head, so I didn't buy any more. I did buy CB Tutorials - Openings #01 and Openings #02. It's video instruction, giving a brief overview of the main open and semi-open openings.
In the second problem, I thought I got it right, until Fritz showed me the check on my king. I never saw that, so completely focused on that one corner of the board.
I'm back to continue this series on bad chess thinking (brain damage) that arises at anytime, from the opening, middle, to the end.
For now, I will focus on the opening, opening principles, where my thinking has gone haywire. I’d like to get off to a better start, so I have many examples of bad thinking in the opening phase from my Live Chess games that need surgery.
Here is No. 1
After 1. e4 e5 2. Nf3 Nc6 3. d4 d6, I played 4. Nc3?, with the idea of only moving as many pawns as necessary to complete development, thus, 4.Nc3 made perfect sense, developing a piece, instead of pushing a pawn a second time. Chess engines disagree. They really like 4.d5, pushing this same pawn a second time in the opening?! So, why is that such a good thing for White, and why is 4.Nc3 not a good move at this time?
I understand that 4.d5 forces Black’s knight to move again, but it does cost White a tempo, which could be spent developing another piece. What opening principles are at work here?
Last, a few of my elementary chess students have just started playing Live Chess here at chess.com, so your posts/teaching will not only help me, but more importantly, help my upper grade students. Children are the future of chess, and everything, therefore, much is riding on this topic. It may run for hundreds of posts, as I have much bad chess thinking that needs to be removed. Thank you. 
The variations in blue were generated by the chess engine Houdini.
I can see you still need to practice mate in one!
Still working on it.
Also the mate with Ne7 should be good practice too.
Houdini and Fritz found the queen trapping line. I ran Houdini all the way to 100% and depth = 23. The continuation is in blue.