Parry-Series Vogtlaender online tournament
|1||The tournament is open for compositions with the condition Vogtlaender (a side is in check only if it threatens to capture the opposing King), and one of the following two stipulations: pser-a=>b and phser-a=>b (parry-series or parry-help-series from an initial position to a final position).|
|2||There are two sections: Section 1 for pser-a=>b Vogtlaender entries, and Section 2 for phser-a=>b Vogtlaender entries.|
|3||Only compositions with black pieces (including the King) and the white King alone, the total number N of pieces ranging from 3 to 17, are allowed.|
|4||The main goal of the tournament is to find, for each such N, the largest M so that one of the following stipulation/condition is sound: pser-a=>bM Vogtlaender (Section 1) or phser-a=>bM Vogtlaender (Section 2). Such a composition is denoted P(N,M) or PH(N,M), respectively.|
|5||At the end of the tournament, the combined number of "per-unit" records for Sections 1 and 2 will be tabulated for all participants. However, to enter this ranking a minimum of 4 records (out of the theoretical maximum of 30 records) is needed.|
|6||In addition to the records for the different numbers of total force and their related rankings, another ranking will be based on the best move-length records found by each tourney participant (individual or team). For each Section the participants can submit their best overall record if it is equal to or exceeds 40 moves for Section 1 and 60 moves for Section 2, respectively.|
|7||In Section 1, while black variants are allowed only entries with a unique white series are accepted.
However, please note that within the framework of this tournament, for Section 1 we consider that two white moves
are identical if their starting and ending squares are the same, regardless of the fact that one may be a checking
move and the other a non-checking move, or that one may be a capturing move and the other a non-capturing move,
or if the captured unit is of different type.
In Section 2, only entries with a unique solution are accepted (no duals are allowed).
Moreover, each entry must incorporate at least one Vogtlaender check-and-parry move.
|8||Only normal 8x8 board and orthodox pieces are accepted. No other (fairy) conditions are accepted.|
|9||Visible promotions are allowed but the initial position, white on-move, has to be legal in the orthodox sense.|
|10||The last move must be made by white, and can be a Vogtlaender checking or even a Vogtlaender checkmating move, hence the white King can be, orthodoxly speaking, in check in the final position. But the white King cannot be in check (from the orthodox point of view) in the initial position, as it would be Vogtlaender illegal.|
|11||Joint compositions are accepted, as long the co-authors do not also participate independently.|
|12||The tournament is "helped" - the best bounds found by the participants will be regularly indicated in the "News" and "Standings" pages, with author’s names, but without their corresponding matrices. The site Administrator, Cornel, and the tournament Director, Dan, will not participate. Nicolas will perhaps participate, but will only submit new entries starting April 25th, in order to reduce the potential impact of having known the theme before the start of the tournament.|
Email subject line: TT3 P(4,18) Attached text file: Joe Composer P(4,18) 4K3/8/2k5/1s6/8/8/5q2/8 K8/8/2k5/8/8/8/4sq2/8 1.Ke8-d8 2.Kd8-c8 3.Kc8-b8 4.Kb8-a7 + Sb5-d4 5.Ka7-a6 6.Ka6-a5 7.Ka5-b4 8.Kb4-c3 9.Kc3-c2 + Sd4-e2 10.Kc2-d3 11.Kd3-e4 12.Ke4-e5 13.Ke5-e6 14.Ke6-e7 15.Ke7-d8 16.Kd8-c8 17.Kc8-b8 18.Kb8-a8 a=>b
BeginProblem Forsyth 4K3/8/2k5/1s6/8/8/5q2/8 Stipulation pser-a=>b18 Forsyth K7/8/2k5/8/8/8/4sq2/8 Condition VogtlaenderChess Option NoShortVariations EndProblem
BeginProblem Forsyth 8/8/1p6/1p5K/8/2k5/8/8 Stipulation phser-a=>b29 Forsyth K7/8/8/8/8/2k5/1s6/1s6 Condition VogtlaenderChess EndProblem