7/17/2019 Chess

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* delay move (when you dont want to move)

White: Kd6, Rb7Black: Kd8Black to move.

Suppose 1... Kc8. Then 2.Rb6 forces 2...Kd8.

Which leads to checkmate for black.

So 1...Ke8. 2.Ra7 (delay move) doesnt change essentially white's position. Black is forced to flee to right 2...Kf8 . Moving left 2...Kd8 results to mate. black's king is eventually cornered by white's king.

* general formula for King-Rook mate:Example for upper edge:White Kx6 Ry6Black Kx8where |y-x| >= 2 safe distance.

* stalemate spider sense

* Endgame basic notes:enemy king can rarely be mated in the middle of the board.staircase maneuverthe box technique (e.g. Rook-King vs King)single piece cannot mate alone.watch out for stalemates (always ask if enemy king has legal square to go to)trap the king on the edge (safest)

* Cannot mate:King + ...

Minor pieceTwo knightsPawn (unless promoted)

* Lone King vs Bishopavoid the squares controlled by the bishopi.e. light/dark squares. and "the bishop becomes a non-entity".

ghost than threat - presence allows to avoid stalemate.

* Knight vs Queen endgamewatch out for forks

use King + Queen as a teamchase enemy King to an edge(cut off more and more squares from theboard)King & Queen must stand on diff colored squares. Knight targets same square as he isstanding on on next move.

* Use your Kingwith minimal threat in endgame rush your King to the center of the board.

Opposition:the one who has the opposition is the one which does not move from the oppositio

n.

e.g. White has the opposition

7/17/2019 Chess

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white:Ke6, d6

black:Ke8

Black to move.

Thus white has the opposition

Black has either Kf8 or Kd8. Kf8 loses.1... Kd82. d7In this position whoever moves loses.Black will only be put in this situation if he loses the opposition. Otherwise Black will have the king in front of the pawn with White to move. Which draws the game.

* defending against rook pawns giveenormous drawing chances.

W: Kg6, h6B: Kg8

whoever is moving the game is a draw. Thus even if Black loses the opposition White draws. In contrast:

W: Kf6, g6B: Kf8

Black loses opposition, B to move.1... Kg82. g7 Kh7

3. Kf7And W wins.

* Base pawns can be disrupted to counter enemy plan

Funny games1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Qe2 Ng8-f6

1.d4 d52.Nc3 Nf63.Bf4 Nc64.Nb5 e6pawn at d4 prevents blocking bishop