Temposchlucker

 [disclaimer] You will often see positions that I have used before. But since my insights are new, that very fact is not relevant. Since I repeat them all the time, I can't remember that anyway. White to move 3r3r/1pk2p1p/2p1p1p1/b2n1q2/3P1P2/P1PQ3P/2BB2P1/3R1R1K w - - 0 1 #241. Van Dijk, Harold vs. Polak, Alexander Chessable course  1001-chess-exercises-for-club-players What is this combination made of? The main ingredients are two discovered attacks, who function side by side and are influencing each other. discovered attack of c3 and Bd2 against Nd5 and Ba5 (blue arrows) discovered attack of Bc2 and Qd3 against Qf5 and d2 (green arrows) Notice the unusual target d2. It is in fact a defensive target. You might think, "duh, 20 scenarios is not much", but it are these kind of subtle differences that make the study worthwhile. Targets can be anything! White to move It al starts with the first discovered attack. 1.c4 threatens two targets, the black Bishop and Knight. It i...

A combination must be judged by what the total of subtasks accomplishes.This means that worrying about the price tag of an isolated subtask will only distract you.  White to move r3rk2/2pb3Q/2q2bp1/2n1p3/1pP1P3/1B2RN1P/P4PP1/3R2K1 w - - 0 31 Salgado Lopez, I. vs. Granda Zuniga, J. Quito 2012 Chessable 1001 Chess Exercises for Advanced Club Players. White has sacrificed a bishop for two pawns and an attack 31.Nh4 Bxh4 32.Rf3+ Bf6 What has white accomplished, and what has been the price tag? Goal: clear the f-file for the rook Price tag: a knight Means: Nh4 threatens mate in 1 Rf3+ is with check Rf3 pins the bishop The point is, that the moves are measured in time . As long as you gain time, there is no need to evaluate the price tag of the individual subtasks. Follow up 33. Rxd7 an exchange sacrifice. Threatening mate in 1 33. ... Nxd7 35 c5 opening another LoA (line of attack). Threatening mate in 1 Goal: opening a LoA Price tag: An exchange Means: Rxd7 threatens mate in 1 c5 th...

 Why would you even think of Rxe5 instead of Bxe5+? White to move 1r2r3/p5pp/2nk4/1R1pp3/P2P4/2P3B1/3K2PP/4R3 w - - 0 1 1.Rxe5 introduces the following duplo attacks: discovered attack Re5 plus Bg3 against blacks King and Re8 (loading the battery) skewer Bg3 against black King and Rb8 Furthermore, if black takes on e5, he puts himself into a pin (another duplo attack). So apparently, the application of duplo moves is stronger than the straightforward short-term threat Bxe5+

 The tempo battle is the most overlooked part of the chess literature. A combination exists of standard scenarios that are stitched together by threats. A threat provides you the time to do whatever you want while keeping the opponent busy. Since May 5th I'm working on my problem set of 1430 puzzles. I use the Trick in order to get the job done. I noticed that my opponents start to blunder more. I noticed that back in 2004 too, when I had my first rating boost of 250 points. My opponents began to play worse. I had not the feeling that I was playing better. Nowadays, opponents rated 100 to 400 points higher are blundering pieces against me. That doesn't mean that my rating will boost immediately again, but it feels like a beginning. There are two serious holes in my bucket that I'm not working on currently, endgames and positional play . Since I manage to screw up games where I'm a piece ahead or two pawns, there is still work to do in that area. But I'm not worrie...

Let me continue with the previous position, Yet one move further, after 1,Nxb7 Qxb7 White to move 3r3k/nq4pp/p4p2/1p2p3/4P3/2P2N1P/PnB1QPP1/R5K1 w - - 0 2 I can imagine that I reach this position by logical reasoning and see it before my minds eye. How should I proceed? Somehow I have the feeling that producing more word salad from this point onwards is not very effective. How does System 1 learn? Is it enough to describe what the position is about? Or do I need to invent the description all by myself? In other words, must I approach this from the study room or from the training room? I'm of course addicted to the study room. But the document that I produced there (see the previous post) seems to be sufficient as guideline for the description of this position. Robert gave a lot of examples for karate and stuff that seem to imply that there comes a moment that System 1 must just follow the instruction (while System 2 must shut up for a moment). This seems such moment.

 I made the begin of a checklist of matters to recognize in a puzzle. I will work out more details in following posts: Before combination Get rid of your own problem piece Get rid of potential counter attacker A target piece can be lost by Trap Little space [ Prevent escape ] [ Blocking ] Duplo attack Double attack Discovered attack Pin Skewer Target not on target square [ Chase ] to target square by threat [ Lure ] to target square [ Capture ] defended piece. Defender becomes target [ Magnet ] Attacker not on begin LoA [ Targeting ] LoA battle [ Clearance ] Your own piece with additional threat Change A:D-ratio on LoA, pivot square or target square After combination Assure safe withdrawal of attacker General An [ action ] is indicated by square brackets, bold and italic Do all [ actions ] accompanied by a threat change A:D-ratio [ Add attacker ] (targeting) [ Remove defender ] [ Capture ] [ Cha...

 What do I try to accomplish? I want to develop a reasoning system that makes optimal use of the pruning capabilities based on value and logical reasoning. I reckon that it is universal, so that when I develop it to attack the queen, the same reasoning method can be used to attack a rook. That way, you can rule out whether there is a tactic in the position or not by just applying the reasoning system from the king down to the knight. I'm not bothered by the fact that the reasoning system might get bulky, because it tells me which parts I must absorb by System 1. I'm not bothered by how long it takes, since there are only 20 scenarios to learn. The position below has already 4 of them. That is already 20%! To prevent to become overwhelmed, I divide the tasks in many little subtasks. While fiddling around with the smallest task possible, I am surprised how much hidden details gets unearthed along the way. White to move 3r3k/nb2q1pp/p4p2/Np2p3/4P3/2P2N1P/PnB1QPP1/R5K1 w - - 0 1 We...