Problems can be solved because either you have:
Most junior games are decided by tactical threats, traps and oversights. If you get better at tactics your results are bound to improve.
White has four pieces attacking c6, and Black defends the Knight with only three. Black will lose material because none of the four basic defences work:
A Avoid - the Knight is pinned to the Queen and cannot avoid the attack
B Block - Black cannot block the attack by putting a Pawn in the way
C Capture - Black cannot capture any of the attacking pieces
D Defend - Black cannot defend the Knight with any more pieces
White's Queen on d1 has just moved back from c2, attacking two points at once - d6 and h5. Black cannot defend both and so must lose material.
So, these are the two basic principles.
Black to move.
What is the idea in this position? What do you notice about this position?
1. The White Knight on h4 is attacked once and defended once. If we attack it again it will need to move or be defended because we have a 2:1 greater concentration of force
2. The White Rook on f1 is undefended.
3. The White King and Queen are safe, and the White Pawns can probably be defended.
4. Is there any idea here? If we attack both the Rook and the Knight with one move, this might create a problem for White. Is there any move which attacks f1 and h4? Yes there is!
5. 1...Qc4! With a double attack on f1 and h4.
6. What can White do? White needs a defence which either defends both pieces at once or somehow creates a counterattack. No such move is there. Solved!
When you solve a problem you usually know it straight away - it's like solving a sum. The only warning is: problems in books always have a solution - but real games might not have!
Playing a check: everything stops for a
Purdy talks about "smiting" moves - checks and
captures. In fact, the best move is a move which is a capture with
Playing a capture: if your opponent does not
recapture you will win material
White to move
What's the idea here?
1. The Black King has no moves - it's very nearly mate! But Black is covering h7 and g7. I have a check on h4 or h5 with the Queen, but that doesn't do much: my Queen and Rook can do nothing more by themselves.
2. I would like to get the Bishop into play - for example on the long diagonal a1-h1. In fact, at the moment, if only I had some support for c3, I could play Bc3 winning the Queen by a deadly pin!
3. Is there any way I can cover c3? Yes there is: I can cover it by a Queen on g3.
4. If I just play Qg3 Black may have time to get out of it - I must not give my opponent any choice! I must play forcing moves - like checks...
5. Aha! 1. Qh4+ Kg8 2. Qg3+ Kh8 gets my Queen to g3 without Black being able to do anything. I can now play 3. Bc3, winning - Solved!
1. One idea: if the Black Queen on e2 was a Black Knight - I'd win the White Queen by double attack (knight fork) And even better - I can move a Knight on f4 to e2!
2. BUT if I move the Queen away quietly White can move the Queen, or even take the Knight with the one on d3.
3. So I can't move the Queen away quietly: I must move it noisily - forcingly - I must smite my opponent!
4. I can play Queen takes the Rook on f1 with check. This must be the most forcing move! - but after Kxf1 I have no fork on e2.
5. I can play Queen takes Knight on f3: if White takes the Queen I play ...Ne2+ and ...Nxd4, coming out a piece ahead. If White doesn't recapture, I'm still a piece up. Solved!