py_20210119
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1 - 3# circe
Delbarre, JC.1984
white Ph3e4d7 Bg7 Rh1 Kh7
black Ph2d2f3f4h4h5d4 Kg5 Bg1 Sa2b7
#3 Circé(6+11)
{}
1.Bg7-h8 ! {(forbidding any rebirth of the Black Rook in h8 and threatening } 2.Rh1*g1[+bBf8] + h2*g1=Q[+wRa1] 3.Ra1*g1[+bQd8] #
{)}
1...Bg1-e3 {(or in f2 preventing de facto Rxg1!)} 2.d7-d8=S ! {}
2...Sb7-c5
3.Sd8-f7 # {}
2...Sb7-d6
3.Sd8-e6 # {}
2...Sb7*d8[+wSg1]
3.Sg1*f3[+bPf7] # {}
1...d2-d1=Q
2.d7-d8=B +
2...Sb7*d8[+wBc1]
3.Bc1*f4[+bPf7] # {}
1...Sa2-c1
2.d7-d8=R {(threatening to mate in d5 or g8)}
2...Sc1-d3
3.Rd8-g8 # {}
2...Sb7-d6
3.Rd8-g8 # {}
2...Sb7*d8[+wRa1]
3.Ra1-a5 # {}
1...f3-f2
2.d7-d8=Q +
2...Sb7*d8[+wQd1]
3.Qd1*h5 # {AUW}
2 - S#19 Circe with Rook-locustes
Smits, G.2015
white Pa3 Ka6 Bf1 WRd6g8
black Kc7 BRc5
s#19 Circé(5+2)🨋d6, g8, 🨑c5: Rook-Locuste
{}
1.Bf1-b5[-a3] ? {, if it were not a3 pawn, would force checkmate. }
1...BRc5*b5-a5 # {mate, because capturing in a5 would be illegal with the rebirth of the piece in a1.
in video : } 2.Ka6*a5[+bBRa1] {the idea is clear : remove this annoying pawn;
it will be quite long}
1.Bf1-c4 ! BRc5*c4-c3[+wBf1] 2.Bf1-d3 BRc3*d3-e3[+wBf1] 3.Bf1-e2 BRe3*e2-e1[+wBf1] 4.Ka6-a7 ! BRe1*f1-g1[+wBf1] {}
5.Ka7-a8 ! BRg1*f1-e1[+wBf1] 6.Bf1-e2 BRe1*e2-e3[+wBf1] 7.Bf1-d3 BRe3*d3-c3[+wBf1] 8.Bf1-c4 BRc3*c4-c5[+wBf1] {
: diagramme avec le Roi blanc en a8 au lieu de a6.}
9.Bf1-b5 BRc5*b5-a5[+wBf1] {(no check, as square a9 does not exist)} 10.Bf1-c4 BRa5*a3-a2 {
(the pawn, having been captured on its rebirth square, is now in the box; it is now necessary to return to the starting formation)}
11.Bc4*a2[+bBRa1] BRa1*a2-a3[+wBf1] 12.Bf1-d3 BRa3*d3-e3[+wBf1] {}
13.Bf1-e2 BRe3*e2-e1[+wBf1] 14.Ka8-a7 ! BRe1*f1-g1[+wBf1] 15.Ka7-a6 ! {
(the King won't be able to be checkmated in a7, because Ka8 ! would paralyse the Rook-Locuste, the square a9 doesn't exist.)}
15...BRg1*f1-e1[+wBf1] 16.Bf1-e2 BRe1*e2-e3[+wBf1] 17.Bf1-d3 BRe3*d3-c3[+wBf1] 18.Bf1-c4 BRc3*c4-c5[+wBf1] {(diagram without the a3 pawn)} 19.Bf1-b5 WRc5*b5-a5[+wBf1] # !
3 - h#3 face-to-face b) back-to-back
Frankiss, Ch2020
white Kc8 Bf5
black Pb7c4b3 Kd5
h#3 face-à-face(2+4)b) dos-à-dos
{}
a) {face-to-face}
1.Kd5-d4 Bf5-d3 + 2.Kd4-a7 Bd3*c4 3.b7-b6 Bc4-a6 # ! {}
b) {back-to-back}
1.Kd5-e5 Bf5-e6 + 2.Ke5-a1 Be6*c4 3.b3-b2 Bc4-a2 # !
{Echo.}
4 - s#2 Fuddled Men PRA
Turnbull, R & Bissicks P2014
white Qa2 Pf2f7 Ke3
black Pf3e4f6c6 Kc1 Sh4
s#2 ivrognes rap(4+6)
{
If the last black move was ...Kc1, this King must rest, so we play} 1.Ke3-d2! {;
White King is in his turn immobilised and therefore any black response mate him, since it cannot be prevented} 1...Kc1*d2 {.
Likewise, } 1.Ke3-d3 ! {if the last move was a pawn move arriving in e4.
Or} 1.Ke3-e2 ! {if it was ...gxf3.
The 3 other cases are more resistant.}
1.f7-f8=R ! {(if the last move was a pawn move arriving in f6)} 1...f6-f5 ?
{is fortunately impossible, which justifies the white promotion, because otherwise} 2.Ke3*e4 {fails because of} 3.Rf8*f5 {}
1...c6-c5 2.Ke3-d4 ! {and Black mates whatever they play.}
1...Kc1-d1 2.Ke3-d2 ! {idem}
1...Sh4-g6 {(or g2)} 2.Ke3-f4 ! {idem}
1...Sh4-f5 {(don't check)} 2.Ke3-d4 ! {idem}
1.f7-f8=B ! {(if it was a pawn move c6)} c6-c5 ? {is fortunately impossible, which justifies the white promotion, because otherwise} 2.Ke3-d4
{fails because of } 3.Bf8*c5 {}
1.f7-f8=S ! {(if it was a knight's move)} Sh4-g6 ? {is fortunately impossible, which justifies the white promotion, because otherwise} 2.Ke3-f4 {fails because of} 3.Sf8*g6 {}
5 - h#2 5 solutions super-circe with leo and locuste
Soulivy, K.2013
neutral LEa8 Lh7
black Kc4
white Sf5
h#2 5sol. super-circe(1+1+2)🩀a8: neutral Leo🨖h7: neutral Locuste
{
} 1.nLEa8-e4 Sf5-d4 + 2.Kc4*d4[+wSd7] nLh7*e4-d3[+nLEd8] # {
} 1.Kc4-c5 nLEa8-d5 2.nLh7*f5-e4[+wSc2] nLe4*d5-c6[+nLEc1] # {
} 1.nLEa8-d5 Sf5-g7 2.nLh7*g7-f7[+wSe6] nLEd5*f7[+nLb3] # {
} 1.nLEa8-c6 Sf5-e7 2.nLh7*e7-d7[+wSe2] nLd7*c6-b5[+nLEf1] # {
} 1.Kc4-d5 nLEa8-a5 2.nLEa5*f5[+wSb7] nLh7*f5-e4[+nLEa8] # {
}
} 1.nLEa8-e4 Sf5-d4 + 2.Kc4*d4[+wSd7] nLh7*e4-d3[+nLEd8] # {
} 1.Kc4-c5 nLEa8-d5 2.nLh7*f5-e4[+wSc2] nLe4*d5-c6[+nLEc1] # {
} 1.nLEa8-d5 Sf5-g7 2.nLh7*g7-f7[+wSe6] nLEd5*f7[+nLb3] # {
} 1.nLEa8-c6 Sf5-e7 2.nLh7*e7-d7[+wSe2] nLd7*c6-b5[+nLEf1] # {
} 1.Kc4-d5 nLEa8-a5 2.nLEa5*f5[+wSb7] nLh7*f5-e4[+nLEa8] # {
}
6 - #3 with Equistopper
Rehm, HP & Widlert K2013
white Bc7 Kh1 Ph3h5g5 Sf5g7 Rd8 QFf2
black Pf3c6b5c4 Ke4 Rh6a5 Sb3 Ba3
#3 (9+9)🩈f2: Equistopper
{Essais thématiques :}
1.Rd8-d6 + ? Ke4-f4 ! {}
1.Bc7-d6 + ? Ke4-d3 ! {}
1.Kh1-g1 ! {(threat} 2.Sf5-g3 + Ke4-e3 3.Sg7-f5 # {)}
1...b5-b4 2.Bc7-d6 + 2...Ke4-d5 3.Rd8-b8 # {}
1...Rh6-f6 2.Rd8-d6 + 2...Ke4-e5 3.Bc7-d8 # {Please note that}
1...Ba3-d6 {and} 1...Rh6-d6 {are illegaland on}
1...Sb3-d4 {we have as well } 2.Rd8*d4 # {than} 2.Sf5-g3 #
7 - h#2 anti-circe b) antipode anti-circe c) mars anti-circé d) column anti-circé
Tritten, P.2016
white Pb7 Kd4
black Be4 Kf4 Qf8 Pc3e2f3g3h5h6f7e7 Sg8d7 Rg4e3
h#2(2+15)a) anti-circeb) antipode anti-circec) maes anti-circed) column anti-circe
{}
a) {anti-circe}
1.Be4-f5 b7-b8=B + 2.Re3-e5 Bb8*e5[wBe5->c1] # {}
b) {antipode anti-circe}
1.f7-f5 b7-b8=S 2.Qf8-f7 Sb8*d7[wSd7->h3] # {}
c) {mars anti-circe}
1.Rg4-c8 b7*c8=R 2.Qf8-e8 Rc8-h4 # {}
d) {column anti-circe}
1.Rg4-g6 b7-b8=Q + 2.Kf4-g5 Qb8-f4 # {AUW}
8 - s#37 zigzag chess
Mueller, F & Geissler N2011
white Kh8
black Pa7f6 Kf7
s#37 zigzag(1+3)
{}
1.Kh8-h7 2.Kh7-h6 3.Kh6-h5 4.Kh5-g4 f6-f5 + 5.Kg4-g3 f5-f4 + 6.Kg3-g2 f4-f3 + 7.Kg2-g1 f3-f2+ 8.Kg1-h2 {}
f2-f1=S + 9.Kh2-g2 Sf1-e3 + 10.Kg2-f2 Se3-d1 + {(or 10...Ng4+ )} 11.Kf2-g1 12. Kg1-h1 Sd1-f2 + 13.Kh1-g1 Sf2-h3 + 14.Kg1-f1 15.Kf1-e1 16.Ke1-d2 {}
17.Kd2-c3 18.Kc3-b4 a7-a5 + 19.Kb4-b3 a5-a4 + 20.Kb3-b2 a4-a3 + 21.Kb2-b1 a3-a2 + 22.Kb1-c2 a2-a1=S + 23.Kc2-c1 Sa1-b3 + 24.Kc1-b2 {}
25.Kb2-a2 Sb3-c1 + 26.Ka2-a3 27.Ka3-a4 28.Ka4-b5 29.Kb5-c6 30.Kc6-d6 31.Kd6-e5 Sc1-d3 + 32.Ke5-f5 {}
33.Kf5-g4 Sd3-e5 + {(33... Nhf2+ 34. Kh5 Nf4+ 35. Kh6 Ng4+ idem) (33... Ndf2+ 34. Kh5 Nf4+ 35. Kh6 Ng4+ idem)}
34.Kg4-h5 Sh3-f4 + 35.Kh5-h6 Se5-g4 + 36.Kh6-h7 Sg4-f6 + 37.Kh7-h8 Sf4-g6 #
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