py_20191029

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... or directly on the move in the solution

1 - r#2 make & take

reflex when one of the two camps proposes a checkmate to the other, the latter is obliged to play it
make&takeBefore capturing a piece, it is first necessary to pay homage to him during his lifetime by making a movement with his moving way

Laue, H.
2019

white Pg5g2d2 Se7f8 Rb1 Kf7 black Qa1 Pa3b2 Ka2

r#2 Make&Take(7+4)

Solution

{

} 1.Kf7-e6 ! {

} 1...Ka2-b3 {illegal :} 2.d2*b3 {via c2)} 1...b2*b1=Q {(via c2)} 2.Ke6-d7 ! Qb1-b8# {(via c8 or c7).
non } 2...Qb1-b6 + ? 3.Sf8*b6 {(via c8) but} 3.Kd7*b6 {(via c7 ou c6) doesn't work :} 3...Qa1*b6 {(via b1 or b2).
But not } 2.Ke6-f7 ? Qb1-g6 + 3.Sf8*g6 ! {(via h8).
} 1...b2*b1=R 2.Ke6-f5 ! {(no } Rb1-b4 + ? 3.Kf5-e6 {nor} 2...Rb1-f1 + ? 3.Kf5-g4 {but} 2...Rb1-b5 # {double check, the second check being given by the Queen via b1
} 1...b2*b1=B 2.Ke6-f7 ! Bb1-g6 # {via h5
} 1...b2*b1=S 2.Ke6-d5 ! Sb1-c3 # {via b4

Movements of the White King in a star form.}

2 - maximum exact s#4

maximum exact In Maximum exact, Black must play the longest move (respecting the moving way of the pieces),
even if illegal. White's King can therefore ignore a check if black has a move longer than white's king's capture.
. selfmate white forces black to checkmate him

Petrovic, N.
1966
(version Petkov)

white Qa5 Kd2 Bh6 Sd5 black Pa3b3a2e2a7d7f7h7 Kc4

s#4 maximum exact(4+9)

Solution

{

} 1.Kd2-c2 ! f7-f5 + 2.Bh6-c1 ! h7-h5 + 3.Qa5-d2 a7-a5 + 4.Sd5-c3 d7-d5 # ! {
It's really checkmate because white cannot cause Black to have a move longer than ...bxc2, and on the leaks the King's capture is also the longest.
Please note that on } 4.Sd5-c7 d7-d5 + { White will be able to play } 5.Kc2-c3 ! {and blacks have} 5...Kc4-d3 {or} 5...Kc4-b5 {)}

3 - hs#8 anti-circe

helped selfmate White begins and Black collaborate until the penultimate move
and then White forces Black to checkmate them in 1 move (inverse)
anti-circe the captured piece is reborn on its original square if this one is free otherwise capture is illegal

Tar, G.
2019

white Pc2e2 Ka1 black Pe7 Ka3 Sa4g6

hs#8 anti-circe(3+4)

Solution

{

Essais :
} 1.e2-e4 ! {(1. c4 ?)} e7-e6 ! 2.e4-e5 Sg6*e5-b8 3.c2-c4 e6-e5 4.c4-c5 e5-e4 {

} 5.c5-c6 e4-e3 6.c6-c7 e3-e2 7.c7-c8=Q e2-e1=S 8.Qc8-c3 + Ka3-a2 # ! {

It's really checkmates because neither 8...Nxc3 nor 9 Kxa2 are possible in the absence of rebirth in b8 or e1.}

4 - serial s#18 Mars Circe

serial selfmate : White plays n moves in a row after which Black's only parry is to mate White in 1 move
mars Circe : pieces normally move
but in order to capture, they virtually pass through their native square

Rothmann, B & Millour RJ
1998

white Pb7c4g4 Ke8 Bf8 black Rg7d1 Ke1 Ba8e3 Pg6d7c6e4e2

ser-s#18 Mars Circe(5+10)

Solution

{

} 1.b7-b8=R {(here, if you play } 2.Rb8-b7 + {(checks via h1), there is the counter move} Be3-g1 ! {, so you must eliminate Be3)
} 2.Rb8-b2 {As seen above, the white squares are to be avoided, the Rook giving check since h1 !} 3.Rb2-d2 4.Rd2-d6 {
} 5.Rd6-f6 6.Rf6-f2 7.Rf2-h2 8.Rh2-h8 {
} 9.Bf8*e3 {(since c1; this Bishop was pinned by the Rg7 before the occupation of h8)} 10.Be3-c5 11.Bc5-f8 12.Rh8-h2 {
} 13.Rh2-f2 14.Rf2-f6 15.Rf6-d6 16.Rd6-d2 {
} 17.Rd2-b2 18.Rb2-b7 + {( Return of the Pb7 which has matured! The Rook has been defeated since h1. This is the position after 2 Rb7+? but without Be3)
} Ba8*b7 # {"discover" check by Rd1 (since a8). The squares e7 & f7 are controlled by the Black King.
(15 ... Kf2 not possible, as the f2 square is controlled by the wK via e1)}

5 - h#2 2 sol b) Mars Circe

Sabol, F.
2004

white Pa2e4g5c7d6c4b5 Kb1 Sc8 black Qf2 Pa4b4b2e3f6b7 Ka3 Re2 Bg2h4

h#2 2sol.(9+11)
b) Mars Circe

Solution

{

} a) {
} 1.Qf2-f5 Sc8-a7 2.Qf5*b5 Sa7*b5 # {
} 1.Re2-c2 Sc8-b6 2.Rc2*c4 Sb6*c4 # {

} b) {Mars Circe
} 1.f6-f5 g5-g6 2.Bh4-d8 {(...Qxc8 will be impossible)} Kb1*e2 # {
} 1.b7-b6 e4-e5 2.Bg2-a8 {(...Rxc8 will be impossible)} Kb1*f2 #

6 - 2# anti-circe

Gockel, H.
2017

white Bc1 Kd5 Qc5 Pg6g3d4e4b6d6 Sd2c3 Rf8 black Bg5b3 Ke3 Qc7 Pc2d3c4c6d7 Sf1 Ra4

#2 anti circé(12+11)

Solution

{

} 1.Kd5-e5 ? {(threatening} 2.d4-d5 # {but} 1...Ra4-a5 ! {.
Please note that} 1...Qc7*b6[wQb6->d8] { comes back in d8 and therefore does not not parry).
} 1.Kd5*c6[wKc6->e1] ? {threatening} 2.Sc3-d5 # {
} 1...Qc7-b7 2.d4-d5 # but 1...Qc7-c6 ! {

Key is :} 1.Kd5*c4[wKc4->e1] ! {threatening} 2.Sd2-c4 # {
} 1...Bb3-f7 2.g6*f7[wPf7->f2] # {
} 1...Bb3-c4 2.d4-d5 # {
} 1...Ra4-c4 2.Sc3-d5 # {
} 1...Bg5-f4 2.g3*f4[wPf4->f2] # {
} 1...Bg5-f6 2.Qc5-g5 # {

Tertiary threat correction (say the experts) with the King as the key piece, which is unusual.}

7 - h#4 parrain circe b) cameleon circe

Parrain Circé In parrain Circé, the taken unit is reborn, if possible, immediately after another unit (the "parrain") has played,
arrying out an equipollent route to that of said "parrain".
Circé chameleon In Circé chameleon, a captured figure rises in braid before being reborn,
according to the N-B-R-Q scheme. A pawn capture occurs as in normal Circe

Rice, J.
2018

white Pf2 Sd2 Ke1 black Pe4e3e2 Ke5

h#4 parrain circe(2+3)
b) chameleon circe

Solution

{

} a) {parrain circe
} 1.Ke5-d4 Sd2*e4 2.Kd4-d5[+bPe5] Ke1*e2 3.Kd5*e4[+bPf1=R] f2*e3[+wSd5] 4.Rf1-f5[+bPe7] Sd5-c3 # {

} b) {chameleon circe
} 1.Ke5-f4 Sd2-f3 2.Kf4*f3[+wBf1] f2*e3[+bPe7] 3.e2*f1=S[+wRh1] Ke1*f1[+bBc8] 4.Bc8-g4 Rh1-h3 # {
Note that the capture in h3 5...Bxh3 is illegal because it causes a Queen rebirth in d1
In picture : } 5.Bg4*h3[+wQd1]

8 - ah#2 take & make b) -bN

Kozhakin, V.
2018

white Sb7 Re8 Kg7 black Pd4 Ke5 Rb4 Sf4 Be7

h#2 Take&Make(3+5)
b) -Nf4

Solution

{

} a) {

} 1.Rb4-b6 Sb7-c5 2.Rb6-d6 Re8*e7-g5 # {

} b) -bSf4 {-Nf4

} 1.Rb4-b5 Kg7-f7 2.Rb5-d5 Kf7*e7-g5 #

9 - h==2 toric chessboard

toric chessboard : The chessboard is twice cylindrical: horizontal & vertical
Nightrider : Extended Knight (with toric chessboard, it's a headache!)

Kotesovec, V.
1987

white Pe5d4 Kf5 Bg4c2 Rh4 black Pf4h5 Sc6 Re6d3 Kd5 Nd7

h==2 toric chessboard(8+5)
d7: Nightrider

Solution

{

} 1.Nd7-b3 + {(checks via f1-h8-b7-d6)} Bg4-b7 + {(via d1-c8 ; checks via h1)
} 2.Rd3-f3 + {(checks via f1-f8)} Bc2-f7 {(via d1-e8)

double stalemate.
The Bf7 nails the NIb3 via g8-h1-a2. Rh4 controls c4 & d4 via a4.
. The wK cannot go to g5: NIb3-a1-h7-g5.
And the wR (like the Bb7) is pinned by the same Nightrider, the Bf7 by the Rf3.

. Presented at the fairy-tale tournament in Dresden 2017.}

10 - h#2 2 sol take & make with Equihopper

Equihopper : Piece moving symmetrically in relation to a sautoir within the limits of the chessboard

De Haas, B.
2017

white Kc2 Bc4 EQc8 black Pc5d7 Ka1 Se2

h#2 Take&Make(3+4)
2 solutions
c8: Equihopper

Solution

{

} 1.d7-d5 EQc8*e2-c1 2.d5-d4 EQc1-e7 # {

} 1.d7-d6 EQc8-e4 2.d6-d5 Bc4*e2-c3 # {

Exchange of roles: one figure checkmates, the other forbids escape.}

11 - h#2 4 sol super-circé rose & buffalo

rose Extended knight moving in a rounded shape
Buffalo bouncer (1,3) or (2,3)

Soulivy, K.
2013

neutral Rd7 BIh4 black Kd4 white ROc1

h#2 super Circe(2+3)
4 solutions
c1: Rose
h4: neutral Buffalo
d7: neutral Rook

Solution

{

} 1.nRd7-g7 ROc1-b3 + 2.Kd4-d5 nBIh4*g7[+nRc5] # {

} 1.nRd7-b7 ROc1-e6 + 2.nBIh4*e6[+wROf2] nBIe6*b7[+nRd3] # {

} 1.nRd7-f7 ROc1-c5 2.Kd4*c5[+wROa3] nBIh4*f7[+nRb5] # {

} 1.Kd4-e4 nBIh4-e3 2.Ke4*e3[+nBId3] nRd7*d3[+nBIh5] #

12 - h#2,5 2 sol Volcanic Circe and neutral pawns

Volcanic Circe if the reborn square is occupied, the reborn piece remains "under" the the occupying unit.

Caillaud, M.
2014

neutral Pc7d7 black Se7c1 Be4 Kf5 white Rc2 Bg5 Kb1

h#2,5 Volcanic Circe(8+8)
2 solutions
c7, d7: neutral pawns

Solution

{

} 1...nPd7-d8=nQ ! 2.Kf5-e5 nPc7*d8=nS ! {(nQd8 buried under his renaissance square)} 3.Ke5-d4 nSd8-c6[+nQd8] # ! {
Mate by double check. The capture of the Queen by the Nc6 would not be a defence because the Queen is reborn in d1.
. in pictures :} 4.nSc6*d8[+nQd1] {

} 1...nPc7-c8=nB ! 2.Kf5-g4 nPd7*c8=nR ! {(nBc8 buried under its renaissance square)} 3.Kg4-h3 nRc8-c3[+nBc8] # ! {
Another double check. The capture of the Bishop by Rc3 would allow the rebirth of the Bishop in f1.
In pictures :} 4.nRc3*c8[+nBf1] {

AUW and pseudo Zilahi.}

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