py_20240116

1 - s#8 isardam with double Grasshopper & Nightrider

Dietrich, St
2021

> white Nd3e2 Kf3 WGe1 black Kf1 BGd4

s#8 isardam(4+2)
🨢d3, e2: Nightrider
🨴e1, 🨺d4: Double Grasshopper

: it is totally illegal for 2 opposing units of the same type to observe each other
: Extended rider in successive jumps
: unit making two successive jumps of
There can be no nul moves and the first leap must not be a capture.

Solution

{

} 1.Ne2-c3 BGd4-b4 {Via d2 (null moves are presumed forbidden).} 2.Kf3-g3 BGb4-d4 {Idem.
} 3.WGe1-d2 {(Via b4)} BGd4-e2 {(via b2)} 4.Nc3-d5 + Kf1-g1 {
} 5.WGd2-h4 {(via f2)} BGe2-e6 {(via c4)} 6.Nd3-e5 + Kg1-h1 {
} 7.Kg3-h3 BGe6-c6 {(via e4)} 8.Ne5-d7 {(seems to be a stalemate but ...)} Kh1-h2 # ! {
This is really mate, as 9 Kxh2 or 9 Kg4 is impossible because the black DG c6 would be attacked by the white DG h4 via h1..}

2 - h#2 3 sol patrol with lions

Dragoun, M & Salai L
2013

white Kc5 Pb4a5a2e2f2g3f3f4 LIb8h2b2 black Sd8 Kh8 Rf5a3 Pg5h3e4b7 Bh1 RLd4

h#2 patrol(12+10)
🨴b8, h2, b2: Lion
🨻d4: Rook-Lion

: to capture, you must be "observed" by a unit of your side at the start of the move
: moves along the Queen's lines using a sautoir.
The path from the start square to the jumping square and from the jumping square to the finish square must be clear.

Solution

{

No Lion checks the Black King and} 1.f4*g5 + {(double check) runs into} 1...Kh8-g7 ! {or} 1...Rf5-f4 {or} 1...RLd4-f4 {.

} 1.Bh1-g2 LIb8-g8 2.Bg2*f3 e2*f3 # {

} 1.Ra3-a4 LIh2-h7 2.Ra4*a5 b4*a5 # {

} 1.Rf5-f7 LIb2-g7 2.Rf7*f4 g3*f4 # {

Mats by double check, 2 Lions supporting each other. The 3rd Lion cannot be taken by the Black King, who has no support..}

3 - h#2 symetry point

Caillaud, M.
2019

white Ph7b7 Kd4 black Bd8 Qe7 Kf8 Pa2c2e2 Rg1

h#2(3+7)

symetry point : two units placed symmetrically in relation to the centre of the chessboard
. (the common point of squares d4, e4, e5 & d5) exchange their steps.

Solution

4 - h=4 with Equihoppers

Wenda, K.
2019

white WEa3 Pg3h2 Kc8 black Bd5 Pg5b2 Kb1 black HurdleColourChanging BEf5

h=4(4+5)
🩈a3: Equihopper
🩉f5: Andernach Equ.

: a piece that plays symmetrically in relation to any unit, provided it does not leave the chessboard
: changes the colour of the unit that serves as its centre of symmetry in its movement

Solution

5 - h=2 2 sol make & take

Luce, S.
2020

white Pe7 Kd5 black Pe2 Kh1

h=2 Make&Take 2sol.(2+2)

Make&Take : tribute to the unit taken is done BEFORE the said capture :
the capturing unit first walks like the unit it wishes to capture, then carries out the capture by walking normally.

Solution

6 - h#4,5 3 sol with lions

Novomesky, D.
2004

white Ka2 Pc2 WLb7 black Ka4 BLd8

h#4.5 3sol.(3+2)
🨴b7, 🨺d8: Lion

Solution

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