|Mar-23-18|| ||fredthebear: This game is a clear example of premature attack by White. White grabbed the isolani and paid for it by lagging behind in time/development. Surely 15.Rd1 was the better try for back rank defense while catching up in development. When the center opens, the game speeds up as the long range pieces are fully activated. The possible fork 25.Rc7 would not work for White. Interesting Black checkmate pattern preceded by a queen sacrifice. White was just too aggressive with his rooks in this game.|
|May-22-18|| ||fredthebear: This is Anderssen's Mate. Obviously the pawn needs support allowing it to safely support the rook, so three units are required. (In practice, the pawn is usually supported by a king or another pawn.) Some books list Anderssen's Mate as a bishop on the long diagonal supporting a rook in the corner.|
The classic book "The Art of the Checkmate" by Georges Renaud and Victor Kahn (champions of France about 100 years ago) lists Anderssen's Mate variations in chapter 11, pp.124-127. (This book is far too much of a challenge for beginners to study grandmaster checkmates and variations, but club players and intermediates must know this information to climb the chess ladder of success. "How to Beat Your Dad at Chess" by Murray Chandler is another training tool.)
Here is the link to the namesake game, very well-deserved indeed:
Anderssen vs Zukertort, 1869
Unfortunately, Black resigned before the entire checkmate was fulfilled. The solution to the final position is given below.
FTB fondly recalls struggling to solve this memorable puzzle in Reinfeld's 1001 Ways to Checkmate. (Student's should study "How to Force Checkmate" by Fred Reinfeld first, many times over and over, and then tackle the 1001. [Some of these can be found in Chess Tactics Workbook by Al Woolum.] Of course, "Bobby Fischer Teaches Chess" is a pre-requisite to ALL of the above books because it extensively focuses on check and checkmate.)
Eventually get around to reading the Irving Chernev and I.A. Horowitz books on opening traps, too! Bruce Pandolfini's "The Winning Way" is a beginner's book that will help you decide when to bring the queen out early. The queen is a checkmating machine, so you'd better learn how to apply her properly. Just make sure she leaves the b-pawn alone!
Solution to Anderssen - Zukertort: Sacrifice the Qh7+, Pf6 discovered+, sacrifice the Bh7+, R+ to h-file, then R to the back rank Rh8#.)
Furthermore, if you want your official chess rating to surpass the calendar year, then you'd better spend a dozen minutes each night on endgame positions. Endgame knowledge is stable, forcing, lasting, and repeats itself often amongst evenly matched opponents. Start with some basic endgame chapters in beginner's instructional books. After you can randomly review the diagrammed endgame positions and visualize the solutions from move to finish in those starter books, then tackle a book devoted exclusively to the endgame. Don't start with a difficult, comprehensive book! Get all the basics down pat.
Other Mating Patterns:
|May-23-18|| ||fredthebear: To clarify, the two games referenced above are NOT a duplicate finish, but very similar.|
In the original Anderssen's Mate of 1869 (Anderssen - Zukertort link), there is a queen sacrifice that sequentially allows the rook to race down the h-file and deliver checkmate from the corner. Thus, rook-in-the-corner supported by the g-pawn is the similarity. Here, Sergeant's queen deflection sacrifice (not as complex) allows the rook entry down the middle and then mate from the corner. The mated king is still next to the cornered rook and supporting g-pawn, but it's not a back ranker. Thus, FTB regards this as a variation of Anderssen's Mate. It's good to know this checkmating pattern works from both directions by the rook.
As a teaching point, it's probably best to use a Kf3/Kf6 to support the g-pawn which supports the rook in the corner. By using a king for support of the g-pawn, the checkmate pattern works whichever direction the rook comes from. The mated king cannot use a flight square next to the winning king. Reference "Mate No. 9F" on p. 125 of "The Art of the Checkmate." As the chapter demonstrates, there are various ways to accomplish this pattern w/the g-pawn, including the application of a Greek Gift followed by a queen+ to the h-file.
It's much more common to see a Bf3/Bf6 (blocking an opposing pawn on f2/f7) supporting the Rh1#/Rh8# without a g-pawn. Renaud and Kahn considers this to be a variation of Anderssen's Mate as well. Obviously, the blockading bishop serves as a replacement for Kf3/Kf6 and g2/g7.
The two matching factors in all the variations of Anderssen's Mate is that a heavy piece (queen or rook) delivers a support mate from the corner, and the losing king has no g-pawn shield. Opening the g-file and/or h-file usually requires a sacrifice.
|May-23-18|| ||fredthebear: Grandmaster Murray Chandler provides a good description of Anderssen's Mate as Deadly Checkmate #45 in "How to Beat Your Dad at Chess." He gives some examples of "Horwitz Bishops" (also known as Parallel or Raking Bishops) referring to a pair of bishops aggressively placed on adjacent diagonals. All of his related diagrams have one bishop on the long diagonal either to support the g-pawn on the 7th or to protect the corner. The other bishop (or queen) becomes a Greek Gift sacrifice. (He explains the Greek Gift earlier in the book.)|
Do turn the page and reference Deadly Checkmate #46 Pawn on the 7th. This is a diagonal deflection sacrifice on the h-file to promote the g-pawn. It borrows the h7 sacrificial concept from Anderssen's mate. The newly created (g8=Q+) queen can then deliver checkmate. This promotion technique can occur in the endgame on any file where the opposing king on it's own back rank blocks a passed pawn on the 7th rank supported on it's file by a rook. ("Rooks belong behind passed pawns.") The sacrifice (check on the 7th next to the passer) by bishop, queen, or adjacent pawn deflects the king off the promotion square.
FTB is puzzled as to why Legall's Mate (properly spelled with two ll's) is all the way back at #47 of the 50 Deadly Checkmates, but no matter. "How to Beat Your Dad at Chess" is a good training tool for all chess players, grown-ups included. Chess is chess; the book demonstrates how to checkmate ANYBODY, including your wife, boss, cat, nephew, classmate, on-line opponent, the local chess instructor, or the state champion. (Keep in mind the examples come from master games, so it's not beneath anyone to solve the puzzles in GM Chandler's book.) Don't judge a book by it's cover!! (Besides, this well-produced hard cover book will last for a lifetime even with regular use.)
"It is clear then that chess analysis is a mixture of calculation of individual moves and pattern recognition." -- Murray Chandler, p. 8.
|May-23-18|| ||tpstar: <fredthebear> Thank you for that link about Mating Patterns. This is my favorite such collection here:|
Game Collection: Checkmate: Checkmate Patterns
<Legall's Mate (properly spelled with two ll's)> Looks like three l's. =)
|May-26-18|| ||fredthebear: <tpstar> you got me on the Lspelling! Thank you for reading my post carefully. |
All past references from various respectable authors in my collection spell it as "Legall's Mate." Modern sources often drop the last l, but FTB is sticking with the old school version -- 3 ls.
FTB teaches Legall's Mate somewhat sooner rather than later. Legall's Mate fits shortly after the forced elementary endings w/plenty of practice, Fool's Mate, Scholar's Mate, and Smothered Mate. Legall's Mate is a natural fit to most king pawn repertoires (perhaps to prevent it coming in from the Black pieces). Legall's Mate rewards rapid minor piece development and control of the center. Thus, it belongs more toward the beginning of one's chess education in the openings. (However, Legall's Mate is also easy to misidentify as being set-up when it technically is not. Perhaps GM Chandler has seen faulty tries for Legall's Mate as a bad influence in the Four Knights, Italian version, etc.)
FTB needs to expand his use of Anderssen's Mate terminology to almost any checkmate with penetrating rook in the opponent's corner supported on the long diagonal, near or far. Anderssen's Mate is a bit underappreciated in chess books as a whole.
|May-26-18|| ||zanzibar: Tomlinson spells it <Legalle>.|
François André Philidor (kibitz #277)
|Aug-07-18|| ||fredthebear: <Zanzibar> Thank you for the post. FTB has never before seen the "Legalle" version. It's difficult to verify with so many sources using the other spelling, but such certainly is not a refutation either. History is full of wrong versions repeated so often that people have come to accept the wrong version as correct.|
For those who are wondering, here's a nice explanation of Legall's Mate with some history:
The article points out that this knight unpin might better be called Legall's Trap or Sacrifice, since the checkmate can be avoided by declining to capture the sitting queen.