French Champagne Tourney
Judge: Michel Caillaud (France)

Theme
Proof Games with reciprocal interferences (a piece A interferes with a piece B and the piece B interferes with the piece A). "The piece A interferes with the piece B" means that the piece A moves to a vacant square, so that if A were not there, at some time of the solution, B could capture the opposite King.
  • The interferences may occur in the same phase (a single solution), or in different phases (two solutions or twins).
  • The pieces A and B can be of the same or different color.
  • A pawn before and after promotion is considered as the same piece.
  • Extensions to closed cycles (A interferes with B, B interferes with C, C interferes with A, etc.) are allowed.
Additional notes
  • Fairy proof games are allowed
  • Only 1.0 non-computer-tested entry per composer is allowed (a problem with three co-authors counts as 0.33 entry per composer)
Michel Caillaud
Original (Eretria 2005)
Thierry Le Gleuher
Phénix 1995
  PG in 9.0 (14+13)     PG in 23.5 (16+12)  

Example I : Michel Caillaud
1.c3 d5 2.Da4+ Dd7 3.Dxa7 Df5 4.Dxb7 Dxb1 5.Db3 Dxc1+ 6.Dd1 Dc2 7.Db1 Da4 8.Dxh7 Dd7 9.Dc2 Dd8
Reciprocal interferences of the black and white queen.

Example II : Thierry Le Gleuher
1.a4 c6 2.a5 Db6 3.axb6 Sa6 4.Ta5 Sc7 5.bxc7 Tb8 6.cxb8=D Sf6 7.Df4 Sd5 8.Da4 Sc3 9.dxc3 Kd8 10.Kd2 Kc7 11.Kd3 Kd6 12.Kc4+ Ke6 13.Kb3 Kf6 14.Lg5+ Kg6 15.Sd2 Kh5 16.Lh4+ Kh6 17.e3 Kg6 18.Tg5+ Kf6 19.Le2 Ke6 20.Lg4+ Kd6 21.Sgf3 Kc7 22.Te1 Kd8 23.Te2 Ke8 24.Dh1
Reciprocal interferences of the white rook and bishop; probably the pioneer reciprocal interference in a proof game?


Some introductory remarks about my approach of judging thematic tourneys. A common thought is that more times the theme is the better. Thus the "fantastic" 2-mover given here (1.Tc1? Txc1! etc, 1.Tah8! Tc1 2.Txc1# etc) should score highly (with 5-fold exposition) in a tourney asking for the (difficult) Vladimirov theme. Somewhere the interest of the realization has to be considered and not only the number of thematic lines...

#2
(3+2)
 

It has been asked that the judge should precise in the announcement exactly what he wants for problems to be at the top of the award. This is not the spirit of the Champagne Tourney that aims to be an open competition letting the greatest possible field to composers (hence the acceptance of fairy proof games). Moreover, in usual lack of inspiration for finding themes, the judge picked the theme after the Messigny 2005 one, without precise idea of what composers should do with it... Some general rules ("apparent promoted force should be avoided", etc) could be given, but as the results of last year's tourney already showed, composer's imagination is better appreciated here than strict application of such rules...

After selecting the theme, I looked for existing realizations. They showed different possible approaches of the theme.

Gianni Donati
Thema Danicum 2004

 

1.g3 Sf6 2.Lh3 Se4 3.Lf5 Sxd2 4.Kxd2 h5 5.Kc3 Th6 6.Kb4 Td6 7.Lh6 e6 8.e3 Le7 9.Df3 Lf6 10.Se2 Ld4 11.Td1 e5 12.Td3 Tg6 13.Ta3 Tg4 14.Sbc3 Tf4 15.gxf4 exf4 16.Td1 Lf6 17.Td6 Le7 18.Sd1 Lf8

The problem by Gianni Donati given here shows a very integrated play where all the black strategy including the first interference is centered on the second interference. Only one thematic pair is displayed, but many more moves than just the interfering ones can be considered as "thematic". No composer considered this approach for Champagne...

PG in 18.0
(14+14)
 

In fact, in many entries, the thematic moves are just there on the shortest way to the final position, and very often one appreciates the ability of the composer to have them entered in the problem more than the content of the problem itself; generally (that is with the exception of special tasks, of course) I considered that extra moves, such as Indian critical moves, added value to the theme.

Another approach found was the combination of the theme with other ones (Phenix with Indian manoeuvres, mono-colored: Reto Aschwanden, 2-4 Prize StrateGems 2002; Gianni Donati, bi-colored: Unto Heinonen, 3 Prize StrageGems 2004). Some other combinations will be found here.

53 problems (a record!) were submitted by 20 composers (not a record!). Some composers were very prolific. Andrey Frolkin submitted 19 entries, all of them in collaboration (this is a record for Champagne!) and will maybe lead to another limitation next year!

2 were cooked, 2 were not thematic and 1 was withdrawn by its author.

Due to the important number of entries, I proceeded to severe elimination and for each thematic idea chose only one or two compositions which I considered the most successful, so that the award could show the broadest set of ideas. Doing so, some good problems which were at the level of HM's or Commendations were excluded.

To accompany problems and help to see their thematic content, I used the presentation found in Kostas Prentos' submissions, expliciting thematic lines in the order of their appearance.


Andrey Frolkin
Kostas Prentos

Sp Pr Champagne Ty
Eretria 2005
Dirk Borst
1 Pr Champagne Ty
Eretria 2005
Reto Aschwanden
2 Pr Champagne Ty
Eretria 2005
PG in 19.0
(14+14)
PG in 17.0
(14+15)
PG in 18.0
(14+14)

Special Prize: Andrey Frolkin (Ukraine) & Kostas Prentos (Greece)
1.h4 e5 2.Th3 Lb4 3.Tc3 d6 4.d3 Lh3 5.Dd2 Kd7 6.Dh6 Dg5 7.Le3 Sf6 8.Lxa7 Tc8 9.Lxb8 Ta5 10.La7 Td5 11.Lc5 Kc6 12.g4 Kb5 13.Sa3+ Ka4 14.b3+ Kxa3 15.Td1 Kxa2 16.Lg2 La5 17.Lb4 Dc1 18.Tc6 Ka1 19.Ta6 c5
Thematic lines:
bLb4(A)-wTc3(B)-wKe1
wTc3(B)-wLc5(C)-bKc6
wLc5(C)-bLb4(A)-bKa3
bLa5(A)-wLb4(C)-wKe1
wTa6(B)-bLa5(A)-bKa1
bDc1(D)-wTd1(E)-wKe1
wTd1(E)-bDc1(D)-bKa1
7 interferences are not the absolute record (see special HM), but they are so in the field of realizations without promoted force on the board. The mix of cycle and pairs makes an unbalanced impression, but this is nevertheless a high technical achievement with intricate play. The most interesting interference play occurs along the diagonal a5-e1, path of Ta6 being not the shortest one. The last pair is a "condensed" reciprocal that was to be found in many other problems.

1st Prize: Dirk Borst (Netherlands)
1.Sc3 c5 2.Sd5 c4 3.Sxe7 c3 4.Sg6 hxg6 5.b4 Th3 6.b5 Lb4 7.d4 d6 8.Lh6 Lf5 9.Dc1 Lxc2 10.Da3 Lf5 11.0-0-0 c2 12.Kb2 Lc3+ 13.Kb3 La1+ 14.Kb4 Tc3 15.e3 c1=L 16.Ld3 Ld2 17.Lb1 Td3+
Thematic lines:
bLb4(A)-bPc3(B)-wKe1
bTh3(C)-bLc3(A)-wKb3
bLd2(B!)-bTc3(C)-wKb4
A Grimshaw with 3 pieces! This is possible only with a pawn later transformed by promotion. Paradoxically, mono-colored 3-fold cycle is more demanding than the 4-fold cycle. The fact that all three interferences occur on the same square (Grimshaw!!) adds great thematic interest. If only the composer could have avoided the apparent promotee, as was done in the other 3-fold mono-colored presentation, this would have been the perfect entry!

2nd Prize: Reto Aschwanden (Switzerland)
1.g4 e5 2.g5 Lb4 3.g6 hxg6 4.Sc3 Th3 5.Se4 Tc3 6.d4 Sh6 7.Kd2 Txc2+ 8.Kd3 Lc3 9.Kc4 b5+ 10.Kc5 Lb7 11.Lg5 Ld5 12.Db1 Lb3 13.axb3 Dc8 14.Ta6 Db7 15.Tf6 Ke7 16.Txf7+ Ke6 17.Lf6 Kf5 18.Sd6+ Kf4
Thematic lines:
bLb4(A)-bTc3(B)-wKe1,d2
bTc2(B)-bLc3(A)-wKc4,c5
wLg5(C)-wTf6(D)-bKe7
wTf7(D)-wLf6(C)-bKf5,f4
"Only" two pairs, but a very elaborated conception leading to a beautiful game with echo between White and Black plays (Grimshaw).


Éric Pichouron
3 Pr Champagne Ty
Eretria 2005
Kostas Prentos
Andrey Frolkin
4 Pr Champagne Ty
Eretria 2005
Reto Aschwanden
5 Pr Champagne Ty
Eretria 2005
PG in 20.0
(14+13)
PG in 19.0
(13+15)
PG in 16.0
(14+14)

3rd Prize: Éric Pichouron (France) Dedicated to Gaëlle and Nicolas
1.a4 h5 2.Ta3 h4 3.Tg3 hxg3 4.hxg3 f5 5.Th3 f4 6.gxf4 a5 7.Te3 Th1 8.Sf3 Txf1+ 9.Kxf1 Ta6 10.Kg1 Tg6 11.Kh2 d6 12.Dh1 Lg4! 13.Kg3 Sd7 14.Dh5 Sb6 15.Sh4 Ld7+ 16.Kf3 Lc6+ 17.Dd5 Kd7 18.Ke4 Te6+ 19.Kd3 Sf6 20.Da2 Le4+
Thematic lines:
bTg6(A)-bLg4(B)-wKg3
wDh5(C)-bTg6(A)-bKe8
bLc6(B)-wDd5(C)-wKf3,e4
After thematic performance, now some place for two problems where the thematic play is less "straightforward". The only entry (a 3-fold bi-colored cycle) where all interference "tracks" have been eliminated in the diagram: the pieces, Kings included, are no more in their interfering/interfered places. White Queen's play is not very interesting with no extra move, but Black Bishop's one is one of the most interesting (thematically) found in this tourney.

4th Prize: Kostas Prentos (Greece) & Andrey Frolkin (Ukraine)
1.d3 h5 2.Lf4 Th6 3.e3 Tg6 4.Df3 Txg2 5.Dc6 dxc6 6.Ke2 Lh3! 7.Kf3 Tg4 8.Ke4 f5+ 9.Kxf5 Kd7 10.Lg3 Tf4+ 11.Kg6 Lf5+ 12.Kf7 e6 13.h4 La3 14.Th2 Lxb2 15.Sa3 Kd6 16.Tb1 La1 17.Tb4 Kc5 18.Td4 Te4 19.c4 Lh7
Thematic lines:
bTg4(B)-wLf4(C)-wKe4
bLh3(A)-bTg4(B)-wKf5
bTf4(B)-bLf5(A)-wKf7
wLg3(C)-bTf4(B)-bKd6
Another problem (1 mono-colored pair, 1 bi-colored one) where almost all "tracks" have been eliminated (only wLg3 is still on his "interfered" square). Again is found some imbalance in the interest in play of the different thematic pieces, the star move being the Indian 6...Lh3.

5th Prize: Reto Aschwanden (Switzerland)
1.c4 d5 2.Dc2 Lh3 3.Dg6 hxg6 4.c5 Th4 5.c6 Td4 6.e4 dxe4 7.Lb5 Dd5 8.Kf1 Db3 9.axb3 e6 10.Ta6 Lb4 11.cxb7+ Ke7 12.Ld7 c5 13.Tc6 a6 14.Tc7 Sc6 15.b8=D Kd6 16.Dd8 Tb8
Thematic lines:
wLb5(A)-wPc6(B)-bKe8
wTc7(C)-wLd7(A)-bKe7
wDb8(B!)-wTc7(C)-bKd6
wDd8(B!)-wLd7(A)-bKd6
1st Prize is bad luck for the composer. Here he succeeded to avoid promoted force on the board (so saving a place in the award), but of course the different squares of interference are a lesser performance. The added Dd8, Ld7 interference is of little (if any) importance to my eye.


Anatoly Vasilenko
Andrey Frolkin

Sp HM Champagne Ty
Eretria 2005
Andrey Frolkin
Kostas Prentos
Sp HM Champagne Ty
Eretria 2005
Rustam Ubaidullaev
1 HM Champagne Ty
Eretria 2005
PG in 23.5
(16+12)
PG in 22.5
(15+16)
PG in 17.0
(16+13)

Special Honourable Mention: Anatoly Vasilenko & Andrey Frolkin (Ukraine)
1.d4 a5 2.d5 a4 3.d6 a3 4.dxe7 d5 5.exf8=D+ Kd7 6.Dxf7+ Kc6 7.Df3 Kb5 8.Lf4 d4 9.e3+ d3 10.Le2 Ta4 11.Kf1 Td4 12.De1 Ka4 13.c4 d2 14.c5 d1=D 15.c6 Dd3 16.cxb7 c5 17.Sd2 Sc6 18.b8=T Da6 19.Tb3 c4 20.Ld1 c3+ 21.Dee2 c2 22.Ke1 c1=T 23.Td3+ Tc2 24.Tc1
Thematic lines:
wDd1(A)-bPd5(B)-bKd7
wLf1,e2(C)-bPd3(B)-bKb5
bDd1(B!)-wDe1(A)-wKf1
bDd3,a6(B!)-wLe2(C)-wKf1
bDa6(B!)-bPc4(D)-wKf1
bDa6(B!)-wDe2(A)-wKf1
bTc1(D!)-wLd1(C)-wKe1
wLd1(C)-bTc2(D!)-bKa4
The record (so far) of 8 interferences with a mix of cycle and pairs, and 4 promoted pieces on the board; a high price to pay, comparing to the Special Prize which has none and only one interference less.

Special Honourable Mention: Andrey Frolkin (Ukraine) & Kostas Prentos (Greece)
1.e4 d6 2.Lb5+ Dd7 3.d3 a5 4.Dd2 a4 5.Db4 a3 6.Kd2 axb2 7.a4 Dc6 8.a5 Kd7 9.a6 Ke6 10.Ta5 Sd7 11.La4 Tb8 12.Th5 g5 13.a7 Lg7 14.a8=S Ld4 15.Sb6 Lc5 16.Kc3 Ke5 17.Sd2 b1=D 18.Sd5 Da2 19.Sf6 Dc4+ 20.Kb2 Kd4 21.f4 Ke3 22.Ka3 D4a6 23.Lb2
Thematic lines:
wLb5(A)-bDd7(B)-bKe8
bDc6(B)-bLc5(C)-wKc3
wDb4(D)-bDc4(E)-bKd4
bLc5(C)-wDb4(D)-wKa3
bDa6(E)-wLa4(A)-wKa3
A 5-fold cycle. The longest chain (so far), using 2 promoted pieces (1 not thematic). Some drawbacks like the cycle not being played in order, and some of the interfering moves (5.Db4) being very "anticipated" in time which give some artificiality to the theme, deprive the problem from a Prize.

1st Honourable Mention: Rustam Ubaidullaev (Russia)
1.d4 d5 2.Lh6 Lf5 3.Lxg7 Sd7 4.Lf6 Lh6 5.h4 Lf4 6.Th3 Sh6 7.Tc3 Tg8 8.Txc7 Tg3 9.Txb7 Te3 10.Kd2 Ld3 11.Kc3 Tc8+ 12.Kb4 Tc4+ 13.Kb5 Lc7 14.Ka6 Se5 15.Tb3 Dd7 16.Kb7 Db5+ 17.Kc8 Ld8#
Thematic lines:
bLf4(A)-bTe3(B)-wKd2
bTe3(B)-bLd3(C)-wKc3
bLd3(C)-bTc4(D)-wKb5
bTc4(D)-bLc7(A)-wKc8
A mono-colored 4-fold cycle with clear-cut and nice play. Very pleasant even if not so profound conception than the prized 3-fold cycle. Another entry showed a similar combination with some additional theme (Phenix), but the cycle was played in the "wrong" order: AB-BC-DA-CD, instead of AB-BC-CD-DA.


Kostas Prentos
Andrey Frolkin

2 HM Champagne Ty
Eretria 2005
Andrey Frolkin
Kostas Prentos
Mikhail Marandyuk
3 HM Champagne Ty
Eretria 2005
Andrey Frolkin
Kostas Prentos
4 HM Champagne Ty
Eretria 2005
PG in 17.5
(16+14)
PG in 16.5
(15+13)
PG in 17.5
(14+13)

2nd Honourable Mention: Kostas Prentos (Greece) & Andrey Frolkin (Ukraine)
1.e4 c5 2.Dh5 c4 3.Dd5 c3 4.Lc4 h5 5.d3 Th6 6.Lg5 Te6 7.Lxe7 f6 8.Ke2 Kf7 9.Ke3 Kg6 10.Kd4 Te5 11.Kc5 Kg5 12.Kd6 g6 13.Dxg8 Lh6 14.De6 Dg8 15.Lf8 Sa6 16.Ke7 Sc7 17.Kd8 a6 18.De8
Thematic lines:
wDd5(A)-bTe6(B)-bKf7
bTe5(B)-wDd5(A)-wKc5
wDd5(A)-bTe5(B)-bKg5
bTe5(B)-wDe6(A)-wKe7
2 bi-color pairs between the same pieces, that is to say Messigny+Champagne 2005 themes in the same problem! A neat realization that I preferred to another one with added Phenix but the last interference being still "present" on the diagram: here the Te5 is the only (and not obvious) witness of the interference play.

3rd Honourable Mention: Andrey Frolkin (Ukraine), Kostas Prentos (Greece), Mikhail Marandyuk (Ukraine)
1.d4 h5 2.Lh6 h4 3.Lxg7 Th5 4.Lf6 Lh6 5.Lxe7 f6 6.Lc5 d6 7.Lxa7 Dd7 8.Lc5 Ta3 9.c4 Te3 10.Kd2 Txe2+ 11.Kd3 Le3 12.Ke4 Dh3 13.g4 Lf5+ 14.Kd5 Lc2+ 15.Ke6 Kd8 16.Kf7 Tf5 17.Kg6
Thematic lines:
bLh6(A)-bTe3(B)-wKd2
bTe2(B)-bLe3(A)-wKe4
bTh5(C)-bLf5(D)-wKd5
bLc2(D)-bTf5(C)-wKg6
Two Grimshaw pairs convincingly performed without extras (black play is "minimal").

4th Honourable Mention: Andrey Frolkin (Ukraine) & Kostas Prentos (Greece)
1.Sc3 Sf6 2.Sd5 Se4 3.Sxe7 Sg5 4.Sg6 Lb4 5.h4 d6 6.Th3 Kd7 7.Tc3 Te8 8.d3 Te4 9.Le3 Dh8 10.Lxa7 Td4 11.Lc5 Txa2 12.Kd2 Ta6 13.Kc1 Tb6 14.Ta7 Kc6 15.Txb7 Kxb7 16.Kb1 Ka7 17.Ka2 La6 18.Kb3
Thematic lines:
bLb4(A)-wTc3(B)-wKe1,d2
wTc3(B)-wLc5(C)-bKc6
wLc5(C)-bTb6(D)-bKa7
bTb6(D)-bLb4(A)-wKb3
A 4-fold bi-color cycle. A noticeable point is that the squares where the pieces interfere and are interfered are the same. The fact that the thematic pieces don't move, usually not a bonus, makes here a pleasant visual effect: one can see the cycle on the diagram!


Andrey Frolkin
Kostas Prentos

5 HM Champagne Ty
Eretria 2005
Allan Bell
Sp Comm Champagne Ty
Eretria 2005
Rustam Ubaidullaev
Igor Vereshchagin
1 Comm Champagne Ty
Eretria 2005
PG in 24.0
(15+12)
PG in 15.0
Isardam   (15+14)
PG in 18.0
(15+16)

5th Honourable Mention: Andrey Frolkin (Ukraine) & Kostas Prentos (Greece)
1.c4 e5 2.c5 Ld6 3.cxd6 Se7 4.dxe7 Tf8 5.exf8=S a5 6.Sxh7 a4 7.Sg5 a3 8.S5f3 axb2 9.a4 Ta6 10.a5 Tf6 11.a6 c5 12.a7 c4 13.a8=T c3 14.T8a4 c2 15.Tg4 Tf4 16.d4 f5 17.Le3 c1=L 18.Sbd2 b1=T 19.Dc2 Tb6 20.Sb3 La3 21.Kd2 Lf8 22.Kc3 Td6 23.Kb4 Th6+ 24.Ka4 Th8
Thematic lines:
bTb1(A)-bLc1(B)-wKe1
bLf8(B)-bTd6(A)-wKb4
Here the theme is performed by Pronkin pieces. Good technical achievement (this requires a lengthy introduction including promoted white force) with extra move by the promoted Rook.

Special Commendation: Allan Bell (Ireland)
1.g3 h5 2.Lh3 Th6 3.Kf1 Tb6 4.Kg2 Tb3 5.axb3 e5 6.Ta6 Ke7 7.Te6+ dxe6 8.Kf3 Sd7 9.Kf4 Tb8 10.Kg5 Kd6+ 11.Kxh5 Kd5 12.Df1 Ke4 13.Dg2+ Kf4 14.Df3+ Dg5 15.Lg2 f6
Thematic "lines":
bPe5(A)-wPg3(B)-wKf4
wPg3(B)-bPe5(A)-bKf4
wDf3(C)-bDg5(D)-bKf4
bDg5(D)-wDf3(C)-wKh5
The definition in the announcement was not very accurate. Here the composer shows with humour that the given definition of "interference" can be applied to fairy effects that can hardly be called interferences...

1st Commendation: Rustam Ubaidullaev & Igor Vereshchagin (Russia)
1.e4 c5 2.Dh5 c4 3.Dc5 e5 4.g4 Ld6 5.g5 Ke7 6.g6 Kf6 7.Sa3 Kg5 8.Sh3+ Kh6 9.d4+ Dg5 10.Le3 exd4 11.Kd2 d3 12.Kc3 d2 13.Kb4 d1=T 14.Ka5 Td5 15.Td1 Tf5 16.Td5 Tf4 17.Tf5 Le5 18.Lc1 Dd8+
Thematic lines:
wDc5(A)-bPe5(B)-bKg5
bTd5,f5(B!)-wDc5(A)-wKa5
wDc5(A)-bLd6(C)-bKe7
bLd6(C)-wDc5(A)-wKb4
wLc1,e3(D)-bDg5(E)-bKh6
bDg5(E)-wLe3(D)-wKd2
3 pairs were shown several times. None of the entries displayed 6 different pieces for that. The drawbacks of these problems are that they were "quantitatively" beaten (see special Prize and HM) and "pattern thinking" was hardly found in the un-unified play. Here, despite the promoted Rook, the composers could add interest by switchbacks performed by the last "condensed" pair.


Andrey Frolkin
Kostas Prentos

2 Comm Champagne Ty
Eretria 2005
Paul Raican
3 Comm Champagne Ty
Eretria 2005
Anatoly Vasilenko
Andrey Frolkin
4 Comm Champagne Ty
Eretria 2005
PG in 16.5
(12+15)
PG in 19.0
(12+15)
PG in 13.5
(16+15)

2nd Commendation: Andrey Frolkin (Ukraine) & Kostas Prentos (Greece)
1.Sc3 c6 2.Sd5 Dc7 3.Sxe7 Dxh2 4.Sf5 Dxg1 5.Th3 Dxg2 6.Te3+ De4 7.f3 Le7 8.Kf2 Dxc2 9.Kg1 Dc5 10.Da4 a5 11.b3 Da7 12.Lb2 b6 13.Tc1 La6 14.Tc5 Lc4 15.Lc3 Le6 16.Td5 Lc5 17.Df4
Thematic lines:
wTe3(A)-bDe4(B)-bKe8
bDc5,a7(B)-wTe3(A)-wKg1
wTe3(A)-bLe7(C)-bKe8
bLc5(C)-wTe3(A)-wKg1
A funny double pair with immobile wTe3 which is intefered and interferes along only two lines.

3rd Commendation: Paul Raican (Romania)
1.h4 h5 2.Th3 Th6 3.Td3 Tf6 4.Td4 Tf3 5.exf3 b6 6.Lb5 La6 7.Lc6 dxc6 8.Sc3 Dd5 9.Sce2 Kd7 10.c3 Ke6 11.Da4 Dxa2 12.Kd1 Dxa1 13.Kc2 Ld3+ 14.Kb3 Sa6 15.Da2 Td8 16.Ka4+ Td5 17.b3 Tg5 18.La3 Tg4 19.Ld6 cxd6
Thematic lines:
wTd4(A)-bDd5(B)-bKd7
bDa1(B)-wDa2(C)-wKa4
wDa2(C)-bTd5(D)-bKe6
bTg4(D)-wTd4(A)-wKa4
A 4-fold bi-color cycle. Neatly done.

4th Commendation: Anatoly Vasilenko & Andrey Frolkin (Ukraine)
1.a4 c6 2.Ta3 Dc7 3.Td3 Df4 4.Td4 d6 5.d3 Lg4 6.Le3 Lf3 7.gxf3 Sa6 8.Lh3 Td8 9.Lc8 e6 10.Kd2 Ke7 11.Kc3 Kf6 12.Kc4 Kg5 13.Sc3 Kh4 14.Da1
Thematic lines:
wTd4(A)-bDf4(B)-bKh4
bDf4(B)-wTd4(A)-wKc4
wLe3(A)-bDf4(C)-bKg5
bDf4(C)-wLe3(A)-wKd2
Another "visual" problem with same "condensed" property like the 4 HM. Simple and charming. Composers label it "Anti-Novotny".


Marek Kolčák
5 Comm Champagne Ty
Eretria 2005
Jonathan Mestel
6 Comm Champagne Ty
Eretria 2005
  PG in 12.0 (15+13)     PG in 4.5 (15+15)  

5th Commendation: Marek Kolčák (Slovakia)
1.Sc3 f5 2.Sd5 f4 3.Sxe7 f3 4.exf3 Dxe7+ 5.De2 De5 6.De3 La3 7.bxa3 Se7 8.a4 0-0 9.La3 Tf6 10.0-0-0 Th6 11.Dc3 g6 12.Kb2 Kg7
Thematic lines:
bDe7,e5(A)-wDe2,e3(B)-wKe1
wDe2,e3(B)-bDe5(A)-bKe8
bDe5(A)-wDc3(B)-wKb2
wDc3(B)-bDe5(A)-bKg7
Messigny+Champagne 2005 with some diagonal-orthogonal echo (Champagne 2002!). A "thematic" move (De7-e5) is a Pelle move (yes, this was another loose end in the given definition of interference...)

6th Commendation: Jonathan Mestel (Great Britain)
1.e4 f5 2.e5 Sf6 3.exf6 exf6 4.De2+ De7 5.De6
Thematic lines:
wDe2(A)-bDe7(B)-bKe8
bDe7(B)-wDe6(A)-wKe1
Somebody had to do it. The shortest realization, ending with a Pelle move.