Chess and Twitter – Chess Tweets!
I recently saw a blog post about ChessTweets, a chess community for Twitter. ChessTweets is going beyond making an app for playing chess by Twitter, they’re conducting an experiment in the value of a collective mind.
The ChessTweets Experiment attempts to expand on the collaborative ideas intended by this famous chess game by creating the world’s first automated and objective hive-mind machine. With the advent of Twitter, developing such a machine has become both readily-possible and irresistible. Can such a machine learn to compete with the best of the best? The ChessTweets Experiment intends to find out.
By asking its participants to give their input in community games and without preselecting grandmasters, ChessTweets will examine each participant’s relative skill and apply a formulated weight to each and every suggested move such that every mind plays an important and unique role.
The experiment is just beginning, and the level of play appears to be fairly uneven. But this should improve as more players join the experiment and as the organizers collect more information about the community. This will be a long-term project, but it is interesting and may provide interesting insight into thinking processes.
If you’re interested in playing casual correspondence-type chess (games are played at approximately one move per day), and you love Twitter, I think you’ll love ChessTweets
I have a suggestion for getting the most advantage out of playing chess on Twitter (or any of the online correspondence-type chess communities): practice analyzing each position by first asking yourself what all the checks, captures, and threats are for your opponent, and how you should respond to each of those. Then examine what checks, captures, and threats you have in your position. Only after you have ascertained all these facts should you begin to do further analysis.
Tags: chess tweets, online chess, twitter
En Passant Capture During Check
In a comment to a recent post, Scott asks why someone doesn’t mention that you can’t make the en passant capture if the King is in check. The short answer is that you can make the en passant capture if it removes the check.
Here are two videos to help illustrate the en passant rule.
So, for example, in the following diagram, Black has just played 1… d5+. White’s King is in check and he has a pawn in position to make an en passant capture.
It is perfectly legal in this position for White to play exd6 (and it would be the best move on the board!), capturing the pawn en passant and removing the check against his King. The important point to remember here is that the capture is legal if it removes the check, but would be illegal if it did not remove the check.
Tags: en passant capture
Chess Notation Part 3 – Playing Over a Game
Good Moves and Bad Moves
When you are reading a chess book, you will often find exclamation points or question marks (or some combination of exclamation points and question marks) after certain moves. These are generally accepted indications of good moves and bad moves. Here’s the normal meaning for these symbols:
- ? = bad move
- ?? = really bad or losing move
- ! = good move
- !! = brilliant move
- ?! = questionable move, probably bad
- !? = interesting move, possibly good
Ellipses …
When you see ellipses (the three dots …), that usually means that a move that was played is being omitted from the notation. It is most often used in a book or magazine before or after a diagram to indicate that it is Black’s move. For example, in the following diagram, it is Black’s move. This would be indicated in the following manner before the diagram:
1.e4 …
1… e5
The ellipses in the move before the diagram indicates that it is Black to move in the diagram. The ellipses after the diagram indicate that it is Black who has moved.
Other symbols
Some chess books (such as the Encyclopedia of Chess Openings) employ special symbols to indicate more detailed evaluations of positions in a single symbol. Many of those books are addressed to international readership and will usually have an explanation of the symbols somewhere in the book.
The moves for a complete game.
Here is an interesting game with a strong attack against the castled king and the sacrifice of a couple of pieces to maintain the attack. If you want to practice using chess notation, set up a chess board and play the moves listed below and check the position you get on your board against the diagrams shown below.
- e4 c6
- d4 d5
- exd5 cxd5
- Bd3 Nc6
- c3 Nf6
- Bf4 e6
- Nf3 Be7
- O-O a5
- Nbd2 O-O
- Re1 b6
- Ne5 Bb7
- Ndf3 Re8
- Qc2 g6?
- Nxf7! Kxf7
- Ng5+ Kg8
- Bxg6! Rc8??
- Bxh7+ Black resigns 1-0
If you’re practicing reading chess notation, compare the position above with the position you get on your chess board. After you’ve done that, try to work out why Black resigned. Black has four legal moves, and you should work out the best line for White after each possibility. I’ll post the answer tomorrow.
If you’re interested in a great book for beginning chess players, check out Learn Chess: A Complete Course
King and Rook v. King Checkmate Patterns
One of the first things a new chess player must learn is how to finish off the checkmate when you have won the game. Often this boils down to one of the basic checkmates: King and Queen v. King, or King and Rook v. Rook. I previously gave some rules about how to checkmate with King and Queen against King, and you might want to review that if you’re unsure how to finish that mate.
This article is about how to finish the mate with King and Rook against King. This mate is slightly more difficult than the one with the Queen, but relatively easy once you see the method and understand the concepts.
I will have three posts about this checkmate: the first shows the checkmate patterns with Rook and King against King, the second has rules and tips for mating with a King and Rook against King, and the third will show a 15-move checkmate from a difficult starting position to the final checkmate.
The checkmate patterns
There are three, and only three, patterns for checkmating with King and Rook v. King. The first pattern is the checkmate on the side of the board. This checkmate can occur on any edge of the board on any square that is not a corner square. The Kings stand opposite each other and the White Rook checks the Black King along the side.
In the diagram above, the Rook gives check along the rank, and could be anywhere on that rank except c8 or e8. (If the Rook were on c8 or e8, the Black King could get out of check by capturing the Rook.)
The second and third patterns occur with the Black King in the corner. In this next one, the Black King is in the corner with the White King a Knight’s-move away and the White Rook checking from the side. Again, the White Rook can be anywhere along the 8th rank, provided he’s not right next to the Black King on b8.
The third pattern is really just a variation of the first and second patterns; the Black King is in the corner and the White King stands directly opposite the Black King.
If you know these patterns, you will have a goal to reach for your King and Rook v. King checkmate. The video has examples of how you might reach these positions, and my next post will give rules for reaching these checkmate positions.
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