Sébastien Luce (France)

Original Fairy problems
October’2017 – March’2018

Definitions: (click to show/hide)

No.1273 Sébastien Luce

original – 18.02.2018
Dedicated to Chris Feather

Solution: (click to show/hide)

white Kh1 ANa2 black Ka8 Gb8a7b7

ser-h#41*                                   (2+4)
Alphabetic Chess
Grasshopper b8a7b7
Antelope a2

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Luce Sebastien
Luce Sebastien
February 20, 2018 10:01

With Chris Feather we plan to write an article probably for Springaren on sh#n* ABC with fairy piece(s). This one will be the longer of the article !

Geoff Foster
Geoff Foster
February 21, 2018 01:25

The Antelope gives mate on the only two squares it can move to.

The bK goes to c6 to allow the bGb7 and bGb8 to move, then it goes to f8 to give the move to the bGf4 (for 15.Gf4-h2), travelling along the top rank to avoid giving the move to the bGd7. The bK then takes 8 moves to get from f8 to g5, first moving back along the top rank, then avoiding d6 and e5 (which are attacked by the Antelope), then avoiding 22.Ke4-f5? (which would force the unwanted 23.Gd7-g4). The bK then heads for h3 to allow the bGa2 to move, with 25.Kg5-f4! avoiding both 25.Kg5-g4? 26.Gd7-h3 and 25.Kg5-h4? 26.Gh2-h5. Another very clever feature is 33.Kf5-f6! 34.Kf6-g7! 35.Gg6-g8!, which is played because if the bG remained on g6 then Black would have to play 41.Gg4-g7.

The problem has so many clever points, and the Antelope does much more than just give the mates. Consider the following sequence of moves: 1.Ga7-c7 2.Ka8-a7 3.Ka7-b6 4.Kb6-c5? 5.Gb7-d7 6.Gb8-d6 7.Kc5-d4 8.Gc7-e5 9.Kd4-e3 10.Gd6-f4 11.Ke3-f3 12.Ge5-g3 13.Kf3-e4. The bK now wants to get to f6 (to allow Gf4-h2), but 14.Ke4-e5?? is illegal because the Antelope attacks e5, and 14.Kf5? forces the unwanted 15.Gd7-g4.

Luce Sebastien
Luce Sebastien
February 22, 2018 23:47

Thank you Geoff for this excellent analyse ! You really love chess composition, and your english is much better than mine ! 🙂

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