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Grasshopper (chess)

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Fairy chess piece White grasshopperBlack grasshopperCommon icons used in diagrams

The grasshopper is a fairy chess piece that moves along ranks, files, and diagonals (like a queen) but only by hopping over another piece. The piece to be hopped may be of either color and any distance away, but the grasshopper must land on the square immediately beyond it in the same direction. If there is no piece to hop over, it cannot move. If the square beyond a piece is occupied by a piece of the opposite color, the grasshopper can capture that piece.

The grasshopper was introduced by T. R. Dawson in 1913 in problems published in the Cheltenham Examiner newspaper. It is one of the most popular fairy pieces used in chess problems.

In this article, the grasshopper is shown as an inverted queen and notated as G.

This article uses algebraic notation to describe chess moves.

Movement

abcdefgh
8h8 black crossa7 black pawnd7 black crossg7 black kingb6 black pawnd6 white pawnd4 white upside-down queene4 white pawnf4 white pawnc3 white pawnb2 black crossd2 white kingd1 black cross8
77
66
55
44
33
22
11
abcdefgh
The grasshopper must hop over other pieces in order to move or capture. Here, it can move to any square marked "x", or it can capture the pawn on a7.

In the diagram to the right, the white grasshopper on d4 can move to the squares marked with crosses (b2, d1, d7, and h8) or capture the black pawn on a7. It cannot move to g4, as there are two pieces to hop over.

Example problem

V. Onitiu, N. Petrović, T. R. Dawson
& C. M. Fox (1930)
abcdefgh
8a8 black upside-down queenf7 black upside-down queena2 black pawnh2 black upside-down queena1 black kingc1 white kingh1 white upside-down queen8
77
66
55
44
33
22
11
abcdefgh
White mates in 8 (with grasshoppers Ga8, f7, h2, and h1)

Solution:

1. Gh3 Gh4 2. Gh5 Gh6 3. Gh7 Gh8 4.Ge7 Gd7 5. Gc7 Gb7 6. Ga7+ Ga6 7. Ga5+ Ga4 8. Ga3#

Related pieces

Other related pieces in the problemist tradition are the eagle, hamster, moose, and sparrow, which move and capture like the grasshopper but are deflected (to either side) 90°, 180°, 45°, and 135°, respectively, upon passing the hurdle.

See also

References

  1. Pritchard (1994), p. 227: "It moves and captures on Q-lines by hopping over a man of either colour to the next square beyond."
  2. Dickins (1971), p. 8: " the Grasshopper (G), (), which moves and captures on Queen lines by hopping over the first man of either colour standing on one of those lines to the square next beyond that man. This, the commonest and most familiar of the Fairy Pieces, was invented by T. R. Dawson at the end of 1912, the first G Problem being published in the Cheltenham Examiner, 3rd July 1913. Some thousands of problems using Grasshoppers have been published."

Bibliography

External links

Chess pieces
Orthodox pieces
Fairy pieces (List)
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