[Retros] Construction tourney 205 Die Schwalbe

[Joost de Heer]

Joost de Heer wrote:

> Thema I (Brand/Dittmann) :

> Schlagschach: Shortest dual-free proofgame with a Pronkin piece

> Ranking is based on the number of moves.

> 

> Theme II (Dittmann/Wenda) :

> Anticirce: Construct a position in which white is stalemate, and where 

> white has a maximal number of possible moves which are illegal due to 

> self-check.

> Example:

> S1Sr2K1/5b2/6k1/8/8/8/5p2/8 (3+4)

> White is stalemate, 11 illegal self-checks (Anticirce)

> 

> Ranking is based on the number of possible illegal moves, and secondly 

> on the number of used pieces.

> 

> Theme III: (Dittmann)

> Double maximummer. Find a proofgame in which the kings end up on 

> diagonally opposing corners (a1+h8 or h1+a8). Uniqueness of the 

> proofgame isn't necessary.

> 

> Ranking is based on the number of moves.

> 

> Theme IV: (Dittmann)

> Duellanten chess: Exact proofgame in which as many as possible pawns 

> make at least two single steps and no double step.

> 

> Ranking is based on the number of pawns making at least 2 single steps 

> and no double-step, and secondly on the minimum of the number of moves 

> used.

> 

> Example:

> Dittmann

> r1bqkbsr/pppppppp/8/8/PPP1P3/3s2P1/3P1P1P/RSBQKBSR (16+16)

> Proofgame in 9.0 moves, duellanten chess

> 

> 1. c3 Sa6 2. c4 Sc5 3. a3 Sb3 4. a4 Sa5 5. e3 Sc6 6. e4 Se5 7. g3 Sg4 8. 

> b3 Se5 9. b4 Sd3


I forgot to mention one of the more important things:

Send your compositions before July 31st 2008 to:
Wolfgang Dittmann
Stanzer Zeile 26
12209 Berlin
Germany
w.dittmann at worldonline.de

Joost