{}
1.Kf4-e3 b7-b8=S 2.Sc6*b8[+wSg1] Qd1-d4 # {}
1.Kf4-e4 b7-b8=B 2.Qg8*b8[+wBc1] Qd1-d5 # {Chameleon-echo.
Not too bad for a problem composed, it seems, under the shower. !}
{ }
1.Sf5-e3 ! f7-f8=L {Nf2 is now pinned by Locust f8.}
2.c2-c1=L ! a7-a8=L # {
Black has two tricks that both checkmate the wK and are therefore illegal :}
3.Se3-d5 {and} 3.Se3-g2 {Let's go back to the 2nd black move.
If } 2.Se3-g2 {, then white now has 2 mates at his disposal :} 2...a7-a8=Q {et} 2...a7-a8=B {so no mat !}
5 - h#2 mars circe
mars circe : to capture, a piece "virtually" passes through its native square if it is free
{ }
a) {}
1.g3-g2 e6-e7 2.g2-g1=B e7-e8=Q # {(from d1 and square f2 is controlled by the bK)Note that } 2.g2-g1=S ? {check by b8 .
To complete, on } 2.g2-g1=R ? e7-e8=Q {don't mate because of } 3.Rg1*e8 ! {by h8}
b) bPg3-->d3 {pg3-->d3}
1.d3-d2 e6-e7 2.d2-d1=S ! e7-e8=R # {(depuis h1)Note also that} 2.d2-d1=B ? {check by c8.
Also for completeness, on } 2.d2-d1=Q ? e7-e8=R {don't mate because of } 3.Qd1*e8 ! {by d8}
{AUW}
6 - h#2 2 sol couscous anti-circe
couscous anti-circe : the capturing piece is reborn on the native square of the captured piece
{}
1.g5*h4-d1=R Rg4-g8 2.Rd1-d5 c4*d5-a8=S #! {}
1.f5*g4-h1=B Qh4-d4! 2.Bh1-d5 c4*d5-c8=Q # {bK cannot capture the Q because it would have to be reborn in d1 ;
which explains that} 1...Qh4-f2 ? {don't workA try is :}
1.Kc7-d8 ? Rg4*g5-g7 2.Kd8-e8 Qh4-h8 {which would demolish in anti-circle Calvet, but Qxe8(Qe8) is impossible.AUW.}
7 - 9# with siren & marine mao
Siren : Queen capturing as a Locust.
Mao marin : Mao capturing the unit during its rook step.
Reminder: the Mao is a creeping Knight doing a rook step, then a bishop step.
Tribowski, M.2003
white Pd7d6g7c4f3g3h4 Se8f8 Bb3 Ka1 MSe6e1
black Bb8 Kf5 Ph7h5d4d3e3 SIc1 Rg8d8 MSb4
{
If we consider the MM as coming from a promotion, the position is illegal since there are 7 white pawns!
But in fairy composition, we apparently allow ourselves some liberties.}
1.Bb3-c2 ! {threatens } 2.Bc2*d3# {and here 2 defences : }
1...d3*c2 2.MSe6-f4+ {(Threatens} 3.MSf4*f5-e6 {)} 2...Kf5-e5 3.MSf4-d5+ {( Threatens} 4.MSd5*e5-f6 {)}
3...Ke5-f5 4.MSe1-d3! {this move is allowed by the leaving of Pd3. (Threatens } 5.MSd3*d4-e5# {)} 4...Bb8*d6 5.MSd5-f6+ Kf5-e5 {}
6.MSf6-e4+ Ke5-f5 7.MSe4-g5+ Kf5-e5 8.MSg5-e6+ {(Return.)} Ke5-f5 9.Se8*d6# {}
1...SIc1*c2-c3 2.MSe6-g5 + {(threatens} 3.MSg5*f5-e6 {)} 2...Kf5-e5 3.MSg5-e4 + Ke5-f5 4.MSe1-g2 ! {(threatens} 5.g3-g4 + {then} 6.MSg2-f4# {
; leaving of the c1 Siren makes the defence meaningless. ...e2)
(here, on} 4...Bb8*d6 {, we have} 5.MSe4-f6 + {as in the other main variation)}
4...Rg8*g7 5.MSe4-f6 + Kf5-e5 6.MSf6-d5+ Ke5-f5 7.MSd5-f4+ Kf5-e5 8.MSf4-e6+ {(retour)}
Ke5-f5 9.Se8*g7#
{Two complete circuits of the Marine Mao e6.}
8 - losing chess
losing chess : In losing chess, the aim is to lose all his units
knowing that the capture, when it is possible, is mandatory.
{}
1.Sg1-e2 ! {}
1...d3*c2 {(Here, the symmetrical method of the other variant will not fit :} 2.Se2-d4 ? c2-c1=B ! 3.Sd4-c6 Bc1-h6 {!!!)}
2.Se2-c3 ! c2-c1=B ! 3.Sc3-a2 ! {A square to the left of a4 is missing.} 3...Bc1-h6 4.Sa2-c1! Bh6*c1 {
(sur } 3.Sc3-e2 ? {on a } Bc1-f4 ! 4.Se2*f4 {)}
1...d3*e2 {(and here, not the symmetric of 1...dxc2 :} 2.Sc2-e3 ? e2-e1=B ! 3.Se3-g2 Be1-h4 {!!!)}
2.Sc2-d4! e2-e1=B ! 3.Sd4-e6 {!!!} 3...Be1-h4 4.Se6-g5 {ou} 3...Be1-a5 4.Se6-d8 {(or on c7)} Ba5*d8 {)}
9 - 2# functionnaries
functionnaries : to move (and a fortiori capture) a unit must be "observed" by an opponent unit
Gockel, H.2015
white Sc8c3 Rf8b3 Kb1
black Qe5 Pe6a4b5c6e4e3 Bg7f5 Rc7g3 Kd7
{}
1.Sc3-e2 ? {threatens} 2.Rb3-d3 # {but} 1...Rg3-g1 + !
1.Sc3-d1 ? {threatens} 2.Rb3-d3 # {but} 1...e3-e2 !
1.Sc3*a4 ? {threatens} 2.Sa4-c5 # 1...b5*a4 2.Rb3-d3 # {but} 1...b5-b4 !
1.Sc3-a2 ? {threatens} 2.Rb3-d3 # {but} 1...e3-e2 ! {}
1.Sc3*e4 ! {threatens} 2.Se4-f6 # {}
1...Bf5*e4 2.Rb3-d3 # {}
1...Bf5-h7 2.Se4-c5 # {
The threats of both tries are found in the variations of the real play.
"Tertiary threat correction", say the experts.}
10 - h#2 2 sol isardam einstein
Isardam : It is illegal for 2 opposing pieces of the same kind to "observe" each other.
Einstein: a unit (other than the King) changes at each move into the unit immediately stronger in case of capture,
immediately less strong in case of no capture.
The bR is in check by the wQ, but not by the Bishop, which would become a R after BxK. Similarly, the wK is not in check by the bQf6
{}
1.Kg8-h7 Bc4-f7=S 2.Qf6-h4=R Qc8-h8=R # {}
1.Qf6-f8=R Bc4-d5=S 2.Kg8-f7 Qc8-f5=R # {
We cannot have cover with the bB, which would become a Knight.}
11 - inv 9# with Royal Grasshoppers
Grasshopper: moves along the Queen's lines with the help of a sautoir behind which it lands.
Royal Grasshopper: piece invested with royal prerogatives with the grasshopper march
Turner, N.2007
white Bf8 Rg3d8
white Royal gd1
black Pd2 Bg6
black Royal gg8
{}
1.Sd6-f7 ! {threatens} 2.Sf7*h6 # {(for example } 1...c2-c1=Q 2.Sf7*h6 # {)}
1...Rd1*d7 {(pinning f2)} 2.Qf6-d4 # {(pinning d7 via b6-d7-f6-g4 while f2 remains pinned: a4-b2-d1-f2-g4}
1...Rf2*f6 {(pinning d1)} 2.Rd7-d4 # {(pinning f6, while d1 remains pinned)
No try or Apparent Play, and only two variants (besides the threat-variant). Isn't this restful ?}
14 - h=12 2 solutions with nightriders hopper
nightrider hopper: moves like a Nightrider, but only with the aid of a sautoir,
behind which it lands at a knight's step.
For example, NHh1 controls f5 by passing by g3.
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