The Art of Direct Mate in Two Moves
El Palomar - Buenos Aires - Argentina
Already during many years I collect Mate in 2 problems. In the beginning I cut them from newspapers and magazines and I kept using specific software (Problemiste, MatPlus, etc).
As known, these problems are positions of pieces on the board, where the white ones must play and make one (key)move, that – in spite of the best defensive moves of black - leads to checkmate on the second move.
Many of these problems were incorporated from .pbm, .pgn or .fen files. That is to say, they were already digitized. Others have been digitized from .pdf or .djvu files of old chess magazines, books and newspapers: and this action makes me feel better, since I believe that this digitization constitutes a minimal initial preservation of their fragile paper existence.
What I have discovered lately is that the old format .pbm (by the way not a data base-format ) does not tolerate amounts exceeding 30,000 problems. For that reason I decided to converse all problems to pgn format (the direct export from Problemiste is very inadequate and erroneous)
Anyhow I now present the database of Direct Problems in Two Moves renewed, corrected and “clean” in pgn -format, with more than 135,000 problems.
While doing all this work, the following programs have been of inestimable help:
- the ChessTool pgn program, magnificent publisher of pgn;
- the incredible ChessPad2 of Mark van der Leek, that orders a data base according to multiple criteria;
- and the pleasing and unexpected aid of James Garner, who contributed a program of his creation with which it was possible to detect more than 2,000 duplicates!
- Guillermo Gajate (ChessToll pgn) as well as Mark van der Leek have received my requests for improvements in their programs with patience, and both worked at them. I´m both very grateful.
Ignacio Zelaya, from the Asociación Tandilense de Ajedrez is doing a great job looking for duplicates. All my gratitude to him.
Also Paul Wiereyn with his incredible software APWin 2010 detects duplicates and sent them to me. He too constructed a database of more than 120.000 mate in two problems, and sent it to me...much work...Thanks a lot, Paul...
A special gratefulness to Jorge Marcelo Kapros and Jorge Lois for their support and collaboration. And the charming postcards sent by: Armando H. Marroquin, Ernesto Ferrón de la Fuente, Dmitri Turevski, Guillermo Muñoz, Raimundo García, Cesar Jiménez Méndez, Matías Gianis and Abel Domínguez.
Thanks to Juan Carlos Morra (h), David Lenhart, Miguel Angel Aramayo Acebey and Jhonny Carvajal, Hans van Oijen and Noach (Neville) Stern for their contact and help
And a special gratefulness to Martin Smith : The Streatham & Brixton Chess Blog
(http://streathambrixtonchess.blogspot.com/search?q=Dadd) for his incredible and high quality blog of chess, art and history!
Is in this update all chess composer´s names have been normalized according to Thomas Maeder´s web page Composers Names in Various Alphabets
With chess argentine magazines, beginning with the legendary Caissa, directed by Arnoldo Ellerman. But we also include Blancas y Negras (White and Blacks, 1946-1947), El Ajedrez Americano (The American Chess, 1927-1943) y El Ajedrez Argentino (The Argentine Chess, 1924-1957)
I Add an Excel file which
contains more than 19.000 problemists
(now many of them with e-mail), 1.485
Problemists and a
file in Pbm (Problemist)
The .pgn database can be opened with the following free software:
The .cbh database must be opened with
* Chessbase (not free)
Databases are compressed: you need a software for unzipping them: may be
(This english page gently corrected by Paul Wiereyn. I have no words for express my gratitude...[Surely, this phrase also requires correction!])
(¡ + 138.400 problems!)
More than 1000 from 2013 and the first 9 from 2014!!
You can download a collection of Ellerman´s problems in the web of the Argentine Union of Chess Problemists
You can download a chronological .pgn file, ordered according years. There you can find more than 1000 problems from this year...and the first 9 from 2014!
This files can be open and read with the following free programs: