Imbalances

An imbalance is any 'significant' difference in the two respective board positions.

Many of these differences are the same 5 easy steps used to evaluate a board position: K-MAPS. If you're not familiar with K-MAPS I recommend you reading my blog on the subject: https://lichess.org/@/mullerrj/blog/evaluating-with-k-maps/My99b9rC

I'll list them here (in order of importance):

K= King Safety
M= Material Advantage
A= Piece Activity
P= Pawn Structure
S= Space Advantage

In addition to these K-MAPS imbalances, I'll add 3 more (below) which I think are vital to evaluating a board position:

C= Control of a key file and/or a hole/weak square
I= Initiative
D= Lead in Development

These 3 other imbalances are from a list of a dozen imbalances in Jeremy Stillman's (IM) book, "How to Reassess your Chess- Chess Mastery through Chess Imbalances". (I highly recommend this book for the Intermediate chess player). Jeremy include K-MAPS in his list of imbalances.

All of these imbalances act as a road map that shows each side what to do. i.e. where to move/go.

Let's discuss C= Control of a key file. Why is this important? Controlling a key file is critical in chess because it provides a highway for the major pieces- rooks and queens- to infiltrate the opponent’s camp, attack weaknesses, and restrict enemy movement. Dominating these files increases piece activity, coordinates attacks, and often determines the winner. Here's an example of white controlling the e-file with their rooks, with support from the light squared bishop.

Now, C= Control of a hole/weak square. First, what is a hole or weak square? A hole or weak square is a square on your side of the board that cannot be defended by any of your pawns. i.e. while pieces (like Knights or Bishops) can defend these squares, the lack of pawn protection makes the square "permanent." Why is control of holes or weak squares important? Controlling a hole/weak square means you can safely occupy a square with a piece or a pawn. Either your piece or pawn can’t be taken or if an exchange or multiple exchanges happen(s), it is in your favor. Here's an example of a white knight en-route to either a hole on d5 or e6.

I= Initiative is the ability to create threats that your opponent cannot ignore, forcing them to spend their turns reacting rather than executing their own plans. It is often described as being in the "driver's seat," where you dictate the flow and tempo of the game. Why is this imporant? Having the initiative dictates the game direction. It allows you to steer the game towards a style or are of the board taht suits your strategy. Initiative also restricts your opponents options. i.e. your opponent will be too busy reacting to your moves/threats. Here's an OTB game I played just the other day, where I gave up the initative (unbeknownst to me) on a bad move to swap queens. I was playing the white pieces and I moved: Qc5. I was lucky that my opponent didn't capitalize on my blunder, and I eventually won the game.

D= Lead in Development occurs when you have mobilized more pieces off their starting squares and toward more active positions than your opponent. In essence, it means you have "more soldiers active on the battlefield" while your opponent's forces are still on the sidelines watching the battle. This is different than A=Piece Activity because you can have a deloped piece (in the game) that's not active (can't do anything). Why is lead in development important? A significant lead in development is the primary engine for successful attacks. More developed pieces also control more squares restricting your opponent's movement. A classic example of a game where there is a "Lead in Development" is Paul Morphy's famous Opera House game. You can see that Morphy (white pieces) developed all of his pieces (even connected his rooks) and castled while his opponent had pieces stuck on the back rank.

Jeremy Silman, IM, devoted entire chapters in his book, "How to Reassess your Chess", on why Control, Initiative and Lead in Development are such important imbalances to consider when evaluating a position on the chess board. I highly recommend this book, if you haven't read it.

Now, instead of just thinking K-MAPS when evaluation my board position, I think K-MAPSCID. I pronounce it "kay-maps-kid", because it's easy to remember. Try it!

K= King Safety
M= Material Advantage
A= Piece Activity
P= Pawn Structure
S= Space
C= Control of hole/weak square
I= Initiative
D= Lead in Development