Kangaroo or Lion ?


April 22, 2012

Kangaroo or Lion ?

This post is an anwer to the comment on The Main Accent: BATTERY-PLAY:

seetharaman says: April 22, 2012 at 5:35 pm Excellent imagination to show different effects with the similar settings of Nos.4 and 6. Can No.4 be more economical if Lions are used instead of Kangaroo.?

First of all – thank you very much for your deep analysis and your ideas! I appreciate your comments a lot! About the Lions: Yes, I can take off the white pawns (e5, g5) in case of Lions, but at the same time I won’t need to block the squares e2/d2 on the blacks’ second move. So, have to find some other idea for this move. For now I’ve composed 2 versions of the problem No.4 – with Lions (4.1) and with neutrals: Bishop-Lion and Rook-Lion (4.2). Of course, some more motivations are possible to the black knights on the 2nd move.
Julia Vysotska
Probleemblad- 2012

h#2 2 solutions (7+5)
Kangaroos: d2, e2
I. 1.Sxd2(A) KAe6 2.Se2(B) Be4#
II. 1.Sxe2(B) KAh6 2.Sd2 (A) f4#
Zilahi, Umnov, Critical KA-moves, cycle AB-BA of black self-block moves, creation of anti-batteries, Meredith.
2 variations of problem No.4 from the “Battery Play” post:

Julia Vysotska
Version 4.1
h#2 2 solutions (5+7)
Lions: d5,e5
I. 1.Sxd5 LIe8 2.Sd8 Be7 #
II. 1.Sxe5 LIg8 2.Sc8 f7 #
Here the black knights on the 2nd move don’t block the King (as in No.4), but close the line of Ra8. The other thematic is the same.
Julia Vysotska
Version 4.2
h#2 2 solutions (4+6+2)
Neutrals: Bishop-Lion e2, Rook-Lion f2
I. 1.Sxe2 nRLf5 2.Sf6 Bf4 #
II. 1.Sxf2 nBLh5 2.Sg6 g4 #
Here the black knights on the 2nd move don’t block the King (as in No.4), close the lines for neutral BL/RL so these pieces can’t go away on the mating move. The other thematic is the same.

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11 Responses to Kangaroo or Lion ?

  1. Seetharamanseetharaman says:

    You are right. While making the comment, I overlooked the need for the second black knight selfblock. You have made an excellent reconstruction. My personal preference is for version 4.1. with the nice interference play. The version with neutral men shows your imagination to think up a nice alternative. No wonder you have won two top prizes in the Kobulchess tourney !! Congratulations !!

  2. My ranking of your versions
    1) 4
    2) 4.2
    3) 4.1
    I think that reciprocal change of first and second black moves in version 4 is valuable.

  3. I also think that the version No 4 is the best (even that in my view on e5 is better to be used black pawn instead of white).

    • JuliaJulia says:

      Diyan, probably, is right.. Although, the second pawn (g5) can be only white. Isn’t it better to have the both of them of the same color?

  4. Seetharamanseetharaman says:

    With the experts joining, this discussion is proving to be very interesting and educative. I have one question for the experts:

    Suppose in Version 4, we remove Kangaroo e2. Now the problem can be twin (a) Diagram. (b) Move d2 to e2. The theme, play and content are unchanged. Would you prefer the twin setting with one Kangaroo less, or use two white Kangaroos for “multi solution” form ?

    Similar twinning possible for version 4.1 also.

    • JuliaJulia says:

      Ram, thanks!! About me: I don’t like twins much.. I try to avoid them whenever it is possible (I’m not sure it is always good, but this is what I like 😉 ). And also I like to capture whites. I’ve written Zilahi in the comments. I like this theme also and I like to have it. However in case of battery play I’m not sure if it is really Zilahi or just “something like” as really 2 pieces are involved in the mate.

  5. Petko A.PetkovPetko Petkov says:

    PETKO PETKOV – I think that this discussion on the theme Kangaroo or Lion is very interesting! Diyan is right obviously, Seetheraman also has gived very interesting proposal, more concrete – to use the only one Kangaroo and twins. I’d like to write a short notice with some diagrams. Is it possible Julia?

    • JuliaJulia says:

      Dear Petko, thanks a lot!! Of course, it would be a pleasure for me to publish your notice! Please send it to me by email – and I’ll make a separate post tomorrow during the daytime. Julia.

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