# No.1181 (RK&FP)

 No.1181 Ralf Krätschmer & Franz Pachl (Germany) Original Fairy problems JF – 2017(I): January – June

Definitions: (click to show/hide)

 No.1181 Ralf Krätschmer & Franz Pachl Germany original – 12.01.2017 Solutions: (click to show/hide) white Sb5d8 Kh3 Pe4e6g2h4 black Ka6 Be5 Pa3c5d2d6f5g3 neutral Pa4c4 hs#4.5          b) Pa3→b7         (7+8+2) Circe Neutral Pa4, Pc4 a) 1...d2-d1=B 2.Sb5*a3[+bPa7] Bd1-f3 3.g2*f3[+bBc8] Bc8*e6[+wPe2] { } 4.Sa3*c4[+nPc7] Be6-d7 5.nPc7-c8=nB + Bd7*c8[+nBf1] # b) bPa3-->b7 1...d2-d1=R 2.Sb5-c3 Rd1-d5 3.e4*d5[+bRa8] Ra8*d8[+wSg1] { } 4.Sc3*a4[+nPa7] Rd8-b8 5.nPa7-a8=nR + Rb8*a8[+nRh1] # { (C+ by Popeye 4.75)} No.1181.1 Ralf Krätschmer & Franz Pachl Germany version of No.1181 – 14.01.2017 Solutions: (click to show/hide) white Sb5 Kh3 Pe4e6g2h4 black Ka6 Be5 Pa3b7c5d2d6f5g3 neutral Pa4c4 hs#4.5        zeroposition      (6+9+2) a) -Pb7 ; b) +wSd8 Circe Neutral Pa4, Pc4 a) -bPb7 1...d2-d1=B 2.Sb5*a3[+bPa7] Bd1-f3 3.g2*f3[+bBc8] Bc8*e6[+wPe2] { } 4.Sa3*c4[+nPc7] Be6-d7 5.nPc7-c8=nB + Bd7*c8[+nBf1] # b) +wSd8 1...d2-d1=R 2.Sb5-c3 Rd1-d5 3.e4*d5[+bRa8] Ra8*d8[+wSg1] { } 4.Sc3*a4[+nPa7] Rd8-b8 5.nPa7-a8=nR + Rb8*a8[+nRh1] # { (C+ by Popeye 4.75)}

### 9 Responses to No.1181 (RK&FP)

Principles Economy of the material in the HS are not unanimous. How to evaluate the fact that the black officers Bc8/Ra8 are not involved in checkmate?

• seetharaman says:

Our remarkable Wcct-9 entry (HS#4) was placed lower due to the fact that a white piece in each phase was idle. All black men were necessary. The general view seems to be that both black and white economy is desirable.

2. Georgy Evseev says:

It is more or less OK, as this piece makes mating move. I much more dislike WSd8 in first solution.

I had not intended to write that the problem of superfluous officers. I just wanted to open a debate on economics HS, to which there are at least three basic positions: as in selfmates as in helpmates and something in between …

3. Nikola Predrag says:

A simplified reasoning might be that there’s help-play where Black mates White in his n-th move but after being forced, since White has “almost (stale)mated” Black in White’s n-th move.
So, white pieces should contribute to White’s n-th move and black pieces should contribute to Black’s n-th move, respecting the same principles as for the white pieces in a helpmate.

Of course, a deeper reasoning will consider various specifics of the genre but I’m afraid, even more rigorousness might be required for the general principles of hs#.

However, many composers gladly misuse hs# for violating the principles of classical stipulations.

4. Georgy Evseev says:

The experience of 9th WCCT and later tourneys generally shows that _all pieces must be necessary in all phase in the course of two last half-moves_, but such use may be of any kind – not necessarily participating in mating position itself.

To Nikola and Georgy:
Of course both of you are right – if it considers this a general statement. But the devil is in the details. I will give three examples, which I have my own opinion, but they are assessed differently.
1. Black officer blocking the square next to the black king does not participate in mate.
2. White officer in a position zz before checkmate blocks the black pawn.
3. Black officer does not play in mate but in zz position makes (dual avoidance) tempo move.

• Georgy Evseev says:

1. Generally, considered OK.
2. OK, if the block is active. And the pin of black piece is OK even if passive.
3. Depends on specific problem.

Generally, I think there are some beautiful ideas that cannot be shown without extraneous material. And there are some “normal” things which I consider anti-esthetic. For example, I generally dislike hs# problems when white king is already incarcerated and there is only a need to force a check.

6. Nikola Predrag says:

Well Laco, as a very general principle, your 3 examples are not desirable in any genre.
However, the completeness of a problem might show the weaknesses as being of minor significance or even as being deeply thematic.

In No.1181, the idle bB/bR (in the respective mates) start in the rank of one and the same bP which promotes and makes all black moves.
The types of promotions are well justified, as being needed for both blocking and capturing the neutral piece.

Idleness in the very end is certainly not justified, but we must remember that actually, the single black Pawn makes the complete black play.

In every genre “there are some beautiful ideas that cannot be shown without extraneous material”.
So, in principle, these ideas are simply not suitable for the certain genre (or vice versa).
The principles of a system come out of the nature of that system. Corrupting a whole system to suit some idea is a step towards nonsense.

The various genres should apply various, but mutually well balanced criteria, if they coexist under the same roof of chess composition.