py_20220301

1 - 2# Circe

Boyer, JP.
1968

white Rg7h2 Bh6f1 Qc3 Sc5f6 Ka7 black Qh7 Rh5h4 Pd2d3d5f4f3g3 Ke3 Se6a1

#2 Circe(8+12)

a captured unit is reborn on its original square if it is free.

Solution

{

Jeu apparent :
} 1...Qh7*g7 + 2.Qc3*d3[+bPd7] # {

Try :
} 1.Sc5*e6[+bSg8] ? {(threatens } 2.Qc3*d2[+bPd7] # {and} 2.Qc3-d4 # {)} 1...Sa1-b3 ! {

} 1.Rg7*g3[+bPg7] ! {(threatens} 2.Rh2-e2 # {)
} 1...g7*f6[+wSg1] + 2.Rg3*f3[+bPf7] # {
} 1...g7*h6[+wBc1] + 2.Bc1*d2[+bPd7] # {
} 1...g7-g6 + 2.Qc3*d3[+bPd7] # {
} 1...g7-g5 + 2.Sf6*d5[+bPd7] # {
} 1...d2-d1=Q {(or} 1...d2-d1=B {)} 2.Bh6*f4[+bPf7] # 1...Rh4*h2 2.Sf6-g4 # {
} 1...Se6-d4 2.Qc3*d2[+bPd7] # {

Pickaninny.}

2 - h#4 masand circe with dragon

Luce, S.
2013

white Kf7 black DRe8h2 Kf5

h#4 Masand Circé(1+3)
b) 🨽e8 --> f6
🨽e8, h2: Dragon

all units attacked by the one that checks change colour (except, of course, the King).
Knight + pawn. Dragon only acts as a pawn from its 2nd row,
and so ♔f7 is not in check by 🨽e8

Solution

{

} a) {
} 1.DRh2-g4 Kf7-g8 2.DRg4-f6[e8=w] + WDe8*f6[+bDRf1] 3.DRf1-h2 DRf6-g4[h2=w] + 4.Kf5-g6 WDh2-h4 # {

} b) bDRe8-->f6 {Dre8 --> f6
} 1.Kf5-g4 Kf7*f6[+bDRf1] 2.Kg4-h5 Kf6-f5 3.DRf1-g3[h2=w] + Kf5-f4 4.DRg3-f5 WDh2-g4[f5=w] #

3 - 4# mantis

Luce, S.
2019

white Kd6 LNd5g6 black Sd7b8 Kc8

#4(3+3)
🨍d5, g6: Mantis

Mantis Knight + Locust

Solution

{

} 1. LNg6-h8 ! {Nb8 is pinned by Mantis h8.
(} 1...Kc8-b7 ? {illegal because of the Mantis d5 and } 1...Kc8-d8 ? {illegal because of Mantis h8)
} 1...Sd7-f8 ! {(1...Ne5 ? 2.Me7#)} 2.LNd5-e7 + Kc8-d8 3.LNh8*f8-e8 + Kd8*e8 4.LNe7-g8 #

4 - h#8 2 solutions maos and Grasshopper

Kotesovec, V.
2018

white Ka1 Gg6 black MAc4a6 Kf3

h#8(2+3)
🨟g6: Grasshopper
🨓c4, a6: Maos
2 solutions

Creeping knight making first a rook step and then a bishop step
moves along the Queen's lines with the help of a sautoir behind which it lands.
The arrival square must be free or occupied by an opponent's unit

Solution

{

} 1.Kf3-e4 Ka1-a2 2.Ke4-d5 Ka2-b3 3.Kd5-c6 Kb3-a4 4.Kc6-b7 Ka4-b5 5.MAc4-d6 + Gg6-c6 6.Kb7-a8 Kb5-b6 7.MAa6-b8 Gc6-a6 8.MAd6-b7 Ga6-c8 # ! {
Gc8 and Mao b7 prevent Mao b8 from playing.

} 1.MAa6-b4 Ka1-b1 2.MAb4-a2 Kb1-c2 3.Kf3-e3 Gg6-b1 4.Ke3-d4 Kc2-d1 5.Kd4-c3 Gb1-e1 6.Kc3-b2 Ge1-c1 7.Kb2-a1 Kd1-c2 8.MAc4-b2 Gc1-a3 # ! {
Ga3 and Mao b2 prevent Mao a2 from palying

Chameleon-echo.}

5 - 2# with Grasshoppers, a) Equipollents Circe b) exchange circe c) couscous circe

Loerinc, J.
2016

white Ke8 Pe6 Gc2d4e2g2 Rh4 Bf4 Sc5f2 black Pe7g6 Sa3 Bb1 Kf3 Gg1h3

#2 (10+7)
a) Equipollents Circe
b) exchange circe (PWC Platzwechselcirce)
c) couscous circe

the rebirth is made on the square obtained after movement equipollent from the capture square.
For example ...♝xc2 sends the Grasshopper to d3 because the vectors b1-c2 & c2-d3 are equal.
the rebirth is done on the starting square of the capturing unit.
For example ...♝xc2 sends the Grasshopper to b1, where the bB started from.
the rebirth of the captured unit takes place on the rebirth square of the capturing unit.
For example ...♝xc2 sends the Grasshopper to c8, where the ♝ would be reborn.

Solution

{

} a) {
} 1.Sc5-e4 ! Sa3-b5 {(threat-variant)} 2.Se4-g5 # {
(} 2.Se4-d2 + ? Kf3*f2 ! {)
} 1...Bb1*c2[+wGd3] 2.Gd3-d5 # {
} 1...Sa3*c2[+wGe1] 2.Ge1-h1 # {
} 1...Gg1-e3 {display-departure-file} {or} 1...Gh3-e3 {display-departure-file} 2.Se4-d2 # {

} b) {exchange Circe (PWC)
} 1.Sc5-e4 ! {
} 1...Bb1*c2[+wGb1] 2.Gb1-h1 # {
} 1...Sa3*c2[+wGa3] 2.Ga3-f8 # {
} 1...Gg1-e3 {display-departure-file} {or} 1...Gh3-e3 {display-departure-file} 2.Se4-d2 # {

} c) {Couscous circe
} 1.Sc5-e4 ! {
} 1...Bb1*c2[+wGc8] 2.Gc8-f8 # {
} 1...Sa3*c2[+wGg8] 2.Gg8-d5 # {
} 1...Gh3-e3 {display-departure-file} 2.Se4-d2 # {
(Nf2 is now protected by Gd4)

Zagorouiko cyclic theme ABC-BCA.}

6 - 2# eiffel

Gockel, H.
2016

white Ka6 Qb6 Rh8f1 Se6h2 Pd5g3f2 Bd1 black Pb7g7g4 Qf8 Rc2 Sa1 Kg2

#2 Eiffel(10+7)

the units are paralysed according to the ♙-♘-♗-♖-♕-♙ cycle.
For example, ♟b7, ♙f2, ♜c2 & ♛f8 are currently paralyzed.

Solution

{

Set play :
} 1...Kg2*g3 2.Rf1-g1 # {

tries :
} 1.Qb6-b4 ? {(threatens} 2.Bd1-f3 # {, Pg4 being now paralysed, while the Queen f8 is paralysed by the Rh8 ;)
} 1...Kg2*g3 2.Se6-f4 # {removing the pawn paralysis by the Black Queen and not} 2.Bd1-f3 + ? {(removing the bR paralysis)} Rc2*f2 ! {, nor of course} 2.Rf1-g1 + ? Kg3*f2 ! {)
} 1...Sa1-b3 ! 2.Bd1-f3 + Sb3-d2 ! {or} 2...Sb3-d4 {paralysing Bishop
} 1.Se6-f4 + ? g7-g5 ! {

} 1.Qb6-c7 ! {(self-paralysing but paralyse Pg7 and threatens} 2.Se6-f4 # {Pg7 paralysed cannot play on g5 to paralyse the Knight)
} 1...Kg2*g3 2.Bd1-f3 # {it's really checkmate because } Rc2*f2 {would wake up Qc7

The threat of the trial becomes the main variation of the real play, and vice versa.}

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