Monday, May 21, 2018

Promotions part 2

After my game against Giovanni Callebaut played in the rapidtournament of Aalter see the memory I was exuberant. Obviously winning from a 1600 player is not very special if you are rated 2300. However it was how I won with a double rook sacrifice which pleased me enormously. This double rook sacrifice was on my wish-list for quite some time already (see e.g. game publications). The American grandmaster Gregory Serper even wrote an article about it see "typical patterns everyone should know double rook sacrifice" but he also admits that he never got the opportunity to play it.

His brother is of course the double bishop-sacrifice which destroys the king-side. Some examples of this famous theme can be found in chesscollection Double Bischop Sacrifices and in an article of the strong American grandmaster Daniel Naroditsky see "the double bishop sacrifice".  Beginning of this year I got the chance for the first time to execute it in a game. I am rather proud about that game although it just concerns an online one of 3 minutes each.
Other challenges on my wish-list are/ were e.g. a royal forka self-forkexcelsior,... These are all one by one exceptional themes. A less ambitious list can also be made as in the article "chess moves to play before you die". Besides it is also perfectly possible to add conditions when a goal is achieved. I guess probably all of us have once done an under-promotion if only to have some fun (be careful for the Nakamura-scenario see his game against Mamedyarov which I mentioned in my article jokes). Much harder is to find under-promotions which can be considered obligatory. Such example can be found in my article promotions. Very exceptional are the type of under-promotions which are not only mandatory but also unique. I mean with unique that the position does't resemble to anything earlier seen in practice.

On the site of Tim Krabbe there is an article "Practical underpromotion" which demonstrates how few examples comply to all above conditions. Well last I was astonished that 2 of such unique and mandatory under-promotions could've popped up in 1 of my most recent games. I write "could've" as the game was agreed drawn prematurely. Pity of course but understandable as I had just blundered a piece which spoiled the win. By using the computer I found the well-hidden pearls. I start with the most easy one.

Black sacrifices a bishop, 2 rooks and executes an under-promotion. Still it can go even crazier when white chooses for the critical move 32. Qf6.
Doubtless +3000 elo chess. The number of forced moves to keep the winning advantage in the different lines, seems too much as a human to calculate in a game. Besides it are almost all silent moves so without checks.

So a wish-list or bucket-list in chess can be something very different than winning ratings or titles. By the way except playing special moves it can also be just participating to some chess-activities. Personally I am looking forward to play together some competitions with my son. That can be in 1 team or in big international tournaments or maybe our first official mutual game.


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