![]() |
(from TD 100) | by Unto Heinonen | ![]() |
Frolkin-Ceriani-Theme in the shortest proof games
by Unto Heinonen, International master in composition 1992
This is probably the simplest theme in proof games; a promoted piece must be captured. In the early 1950ies an Italian Luigi Ceriani showed, that it is easy to sacrifice two promoted pieces. Then he tried to sacrifice three pieces, but failed. In 1972 Nikita Plaksin succeeded with three knights. In 1982 Michel Caillaud sacrified four black knights. The revolution had begun!
Diagram 1 Dmitry Pronkin & Andrey Frolkin Die Schwalbe 1985 ![]()
|
![]() ![]() ![]() ![]() ![]() Show solution ![]() The last move offers a special way to introduce a theme capture. The presence of promoted pieces is not a mistake. Composers still would like to see, that they at least disappear during the play. |
Diagram 2 Unto Heinonen Die Schwalbe 1993 ![]()
|
![]() ![]() ![]() ![]() ![]() Show solution ![]() A play is effective. White's extra moves let black's promotions |
Diagram 3 Michel Caillaud Europe Echecs 1994 ![]()
|
![]() ![]() ![]() ![]() ![]() ![]() Show solution ![]() An only six-fold theme presentation. A difficult task and a composer has still succeeded in presenting a good construction. |
Diagram 4 Unto Heinonen Suomen Tehtäväniekat 1995 ![]()
|
![]() Show solution ![]() A main idea is to change the places of black knights. However, a combination is acting well and the theme is a key into the realization |
Diagram 5 Unto Heinonen Probleemblad 1997 ![]()
|
![]() ![]() ![]() ![]() ![]() Show solution ![]() An only presentation, where all five theme promotions are same colour; in addition they all are bishops. Some extra promotions have been needed, because there are troubles with duals. |
Diagram 6 Olli Heimo Die Schwalbe 1997 ![]()
|
![]() ![]() ![]() Show solution ![]() An amazing task! All theme pieces will be captured in their promotion squares |
Some records in non-dualistic SPGs:
![]() ![]() ![]() ![]() |
Michel Caillaud: Themes 64, 1982 | |
![]() ![]() ![]() ![]() ![]() |
Michel Caillaud: EE, 1983 | |
![]() ![]() ![]() ![]() ![]() |
Diagram 1 | |
![]() ![]() ![]() ![]() |
Michel Caillaud: Europe Echecs, 1985 | |
![]() ![]() ![]() ![]() ![]() |
Diagram 5 | |
![]() ![]() ![]() ![]() |
Unto Heinonen: Suomen Tehtäv., 1996 | |
![]() ![]() ![]() ![]() |
D. Pronkin: Die Schwalbe, 1987 | |
![]() ![]() ![]() ![]() ![]() ![]() |
Diagram 3 | |
![]() ![]() ![]() ![]() |
Unto Heinonen:Probleemblad, 1996 | |
![]() ![]() ![]() ![]() ![]() |
Diagram 2 |