# No.721 (KW)

 No.721 Kjell Widlert (Sweden) Original Problems, Julia’s Fairies – 2015 (I): January – June    →Previous ; →Next ; →List 2015(I) Please send your original fairy problems to: julia@juliasfairies.com

No.721 by Kjell Widlert – 100\$ theme with Slow excelsiors! (JV)

Definitions:

Imitator (I): Every time a piece moves an Imitator (or a set of Imitators) moves simultaneously in an identical manner. An Imitator cannot move of itself. If an Imitator cannot imitate the move of a piece, the move is illegal. An Imitator may only pass through or enter an unoccupied square and cannot move off the board. Castling is imitated by decomposing into a King move followed by a Rook move.

 No.721 Kjell WidlertSwedenoriginal – 11.02.2015(after Sick & Emmerson, JF 709.1)Dedicated to Nicolas Dupont Solutions: (click to show/hide) white Ka1 Pe4 Pf2 black Kh7 Pb7 Pe6 Ph6 Pa4 neutral Ia3 h#6                                      (3+5+1i)Imitator a3 1.b7-b6[Ia2] f2-f3[Ia3] 2.b6-b5[Ia2] f3-f4[Ia3] 3.b5-b4[Ia2] f4-f5[Ia3] { } 4.b4-b3[Ia2] f5-f6[Ia3] 5.b3-b2[Ia2] f6-f7[Ia3] 6.b2-b1[Ia2]=S f7-f8[Ia3]=S # { Not 6.b1R? because of 7.Rh1(Ig3)!, and not 6.b1B? because of 7.Bd3(Ic5)!, and not 6.b1I? because of 7.a3,e5,h5(Ia2,Ib1)! Also not 6.e5? because of 7.b1I(Ia2)! (C+ by Popeye 4.69)} 100\$ theme with slow excelsiors. Six moves instead of five – should be worth 120\$ ? Dedicated to Nicolas for his brilliant idea that this might be possible to do. (Author)

### 6 Responses to No.721 (KW)

1. dupont says:

It is worth to mention that Kjell kindly offered me a co-authorship. I would have been proud to be associated with him on such a pretty task, but I didn’t felt that my initial idea was enough to share the resulting problem…

2. oliversick says:

Dear Kjell,

A nice task which can definitly not represented without fairy elements.

Here a small variation: 8/1p5k/7p/8/p7/8/5P2/K7 + Ia3d4
(miniature, but two imitators). What do you think?

Bye
Oliver

• Kjell Widlert says:

Yes, of course fairy elements are needed for this 6-move theme. In addition to imitator(s), I assume that it is possible to do in a double minimummer (perhaps even with minimummer only for Black). Are there other conditions that will allow the theme?

I had actually seen the position with two imitators, but I preferred the position with just one – in part because of using just the one thematical imitator, and in part because of the try 6.e5? which I quite like. But it’s all a matter of taste.

• Stephen Emmerson says:

It can also be done with a slight variation of 709.1:

8/1p5k/7p/8/8/K7/5P2/8/ + Ia2d3

which reduces the unit count back to 7 (including Is).

• Kjell Widlert says:

You might check the Py solution again, Stephen … it does not contain two slow Excelsiors, but instead on White’s side a normal Excelsior + the move Ka3-a4.

The two slow Excelsiors fail because of 7.h5(Ia1,Id2)!

3. Thomas Brand says:

Well, Fairy elements are not really required for the “slow” 100\$ theme: See PDB P0006968 for an orthodox Hoeg Retractor by Per Grevlund (as miniature!) — so in retrograde analysis it works!