The PoPLoAFun system tells us:
- duplo attacks appear at random
- traps appear at random
There are three bases for a tactic:
- lack of space
- lack of time
- lack of freedom due to function
Pawns are the natural targets for positional play due to their limited mobility. All pawns on the 7th rank can only be defended by pieces or by pushing them forward. The f7 and c7 are weakest in the start position because the king and the queen are bad defenders.
In the opening phase, the position is very fluid. This means that the least defended pawn can change rapidly. Until there comes some fixation of the position, positional targets can change from move to move. When the enemy pawns become less mobile, it becomes time to pick your target. Bangiev helps you to focus on the weakest base pawns.
- You look at the base pawns. That are the pawns that cannot be defended by other pawns on the square which they occupy.
- Then you look at the base pawn that can drum up the least amount of defenders.
- Then you look at your own pieces. Which one can attack the pawn of choice?
In the position above, that might well be the b7 pawn. Because the light squared bishop is outside the pawn chain, it cannot assist in the defense of the b pawn.
Putting pressure on the b-pawn ties the defenders to it. Tactics might arise spontaneously from this very fact. But the b-pawn itself has also two functions: defending a6 end c6. When you put so much pressure on the b-pawn that it no longer can be defended on its base square, it might feel compelled to move forward. Thus forsaking its duty to defend a6 and c6. After b6 or bxa6, we all of a sudden notice to have a weak color complex. A weak color complex is a way to infiltrate into enemy territory. Think of it as a matrix of lines of attack.