Tuesday, May 31, 2016

Piece Coordination

Endgames Without Pawns
" The value of coordinated action of more pieces may exceed a lot the sum of each individual piece's value." ~ Emanuel Lasker 

When trading-off pieces and pawns in an endgame, it is critical to know whether the resulting position will be easy to win or draw. Similarly, it is important to note that most positions without pawns are a theoretical draw. So you may sacrifice your minor piece for the last opponent’s pawn and reach an easy draw.
  • Rook vs BishopEasy draw if the defending king runs to the correct corner.
  • Rook vs KnightEasy draw. Keep the knight near your king and you'll be safe.
  • Rook & Bishop vs Rook: Easy draw if you know the key defensive position (Cochrane defense & 2nd rank defense).
  • Rook & Knight vs Rook: Easy draw. This ending is worth playing if the weaker king is already near a corner.
  • Queen vs Two Bishops: Easy draw, but handle with care. Set the bishops and your king next to each other.       

Queen vs Two Knights
An easy draw with the right set up. The defender must place the knights adjacent to each other and the king next to them. The stronger side can have serious winning chances when the knights merely protect each other (they tie each other up) as the queen can bring the defender king to stalemate forcing a knight to move and unprotect the other. 

Draw
One rare position where collaboration of the black king (trapped in the corner) with the queen cannot be established. The white king moves on g5, g6, f7, e7, e6, e5, etc. Notice that the queen cannot destroy the coordination between the white pieces.

Queen vs Bishop & Knight
An exceptional position where the bishop and knight built a 'fortress' against the attacking king.
A permanent barrier.
There is no way for Black to bring in his king and white will simply move Kh2, Kh1, Kg1 or his bishop to h1 & g2.

Two Bishops vs Bishop
Easy draw, as the black king can safely stay in the right corner. The defender bishop patrols the long diagonal preventing any mate threats. 

Fortress

The examples shown illustrated an important criterion with regards to the quality of the pieces: the value of pieces' coordinated action.

Monday, May 16, 2016

Endgame's Material Aspect

Sense of Harmony
        “A love for simple positions, allowed me to gain a deep feeling for what each piece is capable of, to sense their peculiarities, their strength and impotence in various different situations on the board, the limits of their capabilities, what they like and what they don’t like and how they behave. Such a mutual understanding with the pieces is the innate ability of a player, which I call a sense of harmony.” - V. Smyslov

In the beginning, it is important to know the relative value of each piece. This will help you to decide when to exchange chessmen advantageously. Most players know a simple list of values (pawn as the basic unit of currency): pawn = 1p, bishop = knight = 3p, rook = 5p, queen = 9p.

Pieces and Point Value
This is almost correct, but not entirely complete.

The value of pieces is not the same during the whole chess game. We have a set of values during opening and middlegame, another set of values in an endgame. I mean, that a material ratio is different in a opening/middlegame and in an endgame.

During the endgame, the ROOK, the BISHOP and the PAWN change their values. All 3 pieces increase in power, especially a value of pawns goes up. In an endgame, the rook and bishop gets better mobility, while pawns have good chances to be promoted into a queen.


In an endgame, harmony of your pieces becomes very important. An endgame illustrates clearly all the strategic principles of a chess game.