Julius Zdeněk Mach was a great specialist of the Bohemian school. He was the editor of many columns that were famous for the level of the published works: "Zlata Praha", "Svetozor" or "Prager Presse". He wrote "Šachové úlohy 1908-1916" (1917) which is the sequel of the Christmas series book "Ceske Melodie: Eine Sammlung Von 202 Schachaufgaben" (1908) dedicated to problems by Pospisil.
"Chess Chimes from Prague" is a collection of 5 of his problems on a cylindric board (download here).
V.Kotěšovec, J.Brada, J.Beasley and M.Dragoun have compiled 357 unorthodox problems by Z.Mach in "Exoproblemy dr. Zdenka Macha" (1996), because beside the cylindric board, the chinese pieces also interested Z.Mach and he published many problems in the "Fairy Chess Review". Another collection of Mach's problems can be downloaded here.
Julius Mach also invented the fairy piece Vao (the Bishop equivalent of the Chinese Pao).
Let's start with a miniature:
1.Be1-g3 ! ZZ
1...Ke3xe4 2.Qf8-f4+ Ke4-d5 3.Qf4-c4#Flight-giving key and model mates.
1...Ke3-d4 2.Qf8-a3 ZZ Kd4xe4 3.Qa3-d3#
1...Ke3-d2 2.Qf8-c5 ZZ Kd2-e2 3.Qc5-f2#
The following threemover remains within the domain of the Bohemian style:
1.Qa5-d8 ! (2.Bd7xc6+ b7xc6 3.Se6-g5#)
1...Ke4-f3 2.Se6-d4+ Kf3-e4/g4 3.Bd7xf5#The excellent key gives a flight and creates an indirect battery. The battery plays three times.
1...f5-f4 2.Se6-c5+ Ke4-d4/Ke4-d5 3.Bd7-e6# or 2...Ke4-f3 3.Sd3-e5#
Finally, a selfmate which is not too easy to solve, although there are only two variations:
1. Kh1! ZZ
1... h3 2. Rd4 Kf2 3. Re4 Kg3 4. Sd4 Kf2 5. Sc2 Kg3 6. Rg4+ Kf2 7. Rg2+ hxg2#The wS and wR exchange functions. Model mates, of course.
1... Kh3 2. Re2 Kg3 3. Re3+ Kf2 4. Sg4+ Kf1 5. Sf4 h3 6. Sh2+ Kf2 7. Sg2 hxg2#
Karl Adolf Koefoed Larsen (02-05-1896 - 22-12-1963) Danish composer and International Master
[Dansk Skakproblem Klub]
Karl Adolf Koefoed Larsen was probably the most important Danish chess composer. He composed more than 600 problems in all genres. He became International Judge in 1956 and was the editor of the Danish chess problem magazine "Magasinet" from 1930 until 1958 and of the "Skakbladet". His father was Peder Andreas Larsen, who was also a problemist.
The twomover theme Larsen is named after him: in a crosscheck variation, a black piece and a white piece are unpinned.
K.A.K. Larsen had 32 problems published in the FIDE Album, but has not been granted the title of IM.
K.A.K. Larsen originated the idea of the Dansk Skakproblem Klub (Danish Chess Problem Society).
1.Bg3-h4 ! (2.Qg1-g4 [3.Rd4-d1+ e2xd1=~ 4.Qg4xd1#] 2...Bf1-h3 3.Qg4xh3 ~ 4.Qh3-h1#)
1...d6xc5 2.Rd4-d8! ZZ c5xb4 3.Bh4-e7 ~ 4.Be7xb4#Two hard-to-find variations where Black anticipatorily opens a white line with his Pd6.
1...d6xe5 2.Rd4-d7~ ZZ e5-e4 3.Qg1-g7 Bf1-~ 4.Qg7-a1#
1.Sb8-a6 ! (2.Bc5-b6+ Kd8-c8 3.Sa6-c5 b1=~#)
1...b7xa6 2.Qe4-h4+ Kd8-c8 3.Re5-e4 b1=~#Three similar variations where a white piece gives check and is replaced by another white piece as self-block.
1...Kd8-c8 2.Bd5xb7+ Kc8-d8 3.Re5-d5 b1=~#
Giuseppe Brogi (02-05-1900 - 17-01-1976) Italian composer
Giuseppe Brogi was specialized in twomovers and in retro and fairy problems. He invented the Marine pieces. He published more than 1000 problems. He was the editor of the problems section of the "Italia Scacchistica" from 1955 until 1959. He published in 1969 "Il problem. Terminologia e tecnica".
The twomover theme Brogi requests a quadruple threat ABCD and black defences that cyclically prevent two of these four threats (AB,BC,CD,DA) in four variations. The theme was requested in the 17th thematic tourney of the Italian magazine "Il Due Mosse" in 1962 and was presented in the below problem:
1...Bg2 2.Rg4#/Rf5#Brogi theme: the mate duals are intentional.
An example of Brogi's talent in longer, fairier problems:
1. Kb2 Qf1 2. Kc3 Qa6 3. Kb4 Qf1 4. Kc5 Qa6 5. Kd4 Qf1 6. Ke5 Qa6 7. Kf4 Qf1+ 8. Kg5 Qa6 9. Kxf5 Qf1+ 10. Kg6 Qa6+ 11. Kxh7 Qf1 12. Kg6 Qa6+ 13. Kf5 Qf1+ 14. Kg4 Qa6 15. Kf3 Qf1+ 16. Ke2 Qf8 17. Kd3 Qa3+ 18. Kc2 Qf8 19. Kc3 Qa3+ 20. Kb4 Qh3 21. Kb5 Qc8 22. Kc5 Qh3 23. Kd4 Qc8 24. Ke5 Qh3 25. Kf4 Qc8 26. Kg5 Qh3 27. Kxh4 Qc8+ 28. Kg5 Qh3 29. Kf4 Qc8 30. Ke5 Qh3 31. Kd4 Qc8 32. Kc5 Qh3 33. Kb5 Qc8 34. Kc6 Qh3 35. Kb7 Qc8+ 36. Kxc8 Rh5 37. Kb7 Rh1 38. Kc6 Rh5 39. Kd7 Rh1 40. Ke7 Rh5 41. Ke6 Rh1 42. Kf7 Rh5 43. Kg6 Rh1 44. Kh7 Rh5 45. Kxh6 Rh1#
A long K-march on the whole board.
A long K-march on the whole board.