py_20240528
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1 - maximum selfmate 2# circe
Ostruh, B & Klasinc M1976
white Rf1 Sb1 Bd1h4 Pd2 Qf6 Kc6
black Qf5 Kf4 Pd5e5c5b5b3c3c2g4 Rc1e1 Be3 Sf2
s#2 maximum Circe(7+14)
{
} 1.Kc6*d5[+bPd7] ! {(threatens} 2.Qf6*e5[+bPe7] + 2...Qf5*e5 # {, Bd1 must therefore be eliminated to obtain the escape square f3)} 1...c2*d1=R 2.d2-d3 2...Rd1*d3[+wPd2] # {} 1...c2*d1=B 2.d2*c3[+bPc7] 2...Bd1-f3 # {} 1...c2*d1=S 2.d2*e3[+bBf8] + 2...Sd1*e3[+wPe2] # {} 1...c2*d1=Q 2.d2-d4 2...Qd1*d4[+wPd2] # { Albino (4 possible pawn moves) and AUW (the 4 promotions)}
} 1.Kc6*d5[+bPd7] ! {(threatens} 2.Qf6*e5[+bPe7] + 2...Qf5*e5 # {, Bd1 must therefore be eliminated to obtain the escape square f3)} 1...c2*d1=R 2.d2-d3 2...Rd1*d3[+wPd2] # {} 1...c2*d1=B 2.d2*c3[+bPc7] 2...Bd1-f3 # {} 1...c2*d1=S 2.d2*e3[+bBf8] + 2...Sd1*e3[+wPe2] # {} 1...c2*d1=Q 2.d2-d4 2...Qd1*d4[+wPd2] # { Albino (4 possible pawn moves) and AUW (the 4 promotions)}
2 - reflex 3#
Morice, J.1973
white Pd5h5g3a3 Sf7e7 Rg7b1 Bf6 Kh4 Qg1
black Ba6 Ra4 Pb6g2f3e4 Kc5 Sf2e1d2
r#3(11+10)
{}
1.Rg7-g5 ?
1...Ra4-c4 !
2.d5-d6 # ?!? {}
1.Bf6-g5 ?
1...Ba6-c4 !
2.Bg5-e3 # ?!? {}
1.Sf7-g5 ?
1...Sd2-c4 !
2.Sg5*e4 # ?!? {}
1.Bf6-d4 + ?
1...Ra4*d4 ! {}
1.Rb1-b3 ! {(threatens}
2.Rb3*f3
2...Sd2*f3 #
2...Se1*f3 # {)}
1...e4-e3 +
2.Rg7-g4
2...Ra4*g4 # {}
1...Se1-d3
2.Rg7-g5 {(threatens} 3.Qg1-h1 3...g2*h1=Q # {or}
3...g2*h1=R # {)}
2...e4-e3 +
3.Rg5-g4
3...Ra4*g4 # {}
1...Sd2*b3
2.Bf6-g5 {(threatens} 3.Qg1*g2 3...Se1*g2 # {or}
3.Qg1-h1 3...g2*h1=Q # 3...g2*h1=R # {)}
2...e4-e3 + 3.g3-g4 3...Ra4*g4 # {}
1...Ba6-d3 2.Sf7-g5 {(threatens} 3.Qg1*g2 3...Se1*g2 # {)}
3.Sg5*f3
3...Sd2*f3 #
3...Se1*f3 # {}
2...Se1-c2
3.Sg5*f3
3...Sd2*f3 # {}
3 - 2# with leos and rose
Cheylan, Y.1988
white WLg8 Bg7c6 Ke7 Pb7g4h5h4f2 ROd1
black BLh8 Ph7h6h3c7e3b2 Kf4
#2(11+11)
🨴g8, 🨺h8: Léod1: Rose
{Set play :}
1...b2-b1=Q 2.WLg8-b8 #
{real play :}
1.WLg8-c4 ! {(threatens} 2.Bg7-d4 # {)
Promotions on b1 prepare an interception on the 4th rank but have the disadvantage to open the line for the Rose d1,
which now guards g4 via b2-a4-b6-d7-f6.}
1...b2-b1=Q 2.WLc4-f1 # {}
1...b2-b1=B 2.WLc4-f1 # 2.b7-b8=WL # {}
1...b2-b1=BL 2.b7-b8=WL # {}
1...b2-b1=RO 2.b7-b8=RO # {}
1...e3*f2 2.b7-b8=WL # {}
1...Kf4*g4 2.Bc6-e4 # {
A kind of half-Babson.}
4 - h#1 2 solutions anti-circe b) superguards
Rotenberg, J.2024
white Kf7 Rg1
black Re8 Be7a1 Pe6h6 Kh7
h#1 anti-circe 2sol.(2+6)b) Superguards 2sol.
{}
a) {anti-circe}
1.e6-e5 Kf7-g7 # {}
1.Be7-f8 Kf7-g8 # {}
b) {superguards}
1.e6-e5 Kf7-g8 # {}
1.Be7-f8 Kf7-g7 # {}
5 - h#2 b) superguards
Rittirsch, M.2024
white Rd5 Pf7 Bf1 Ke1
black Pg2 Sg4 Kh4
h#2(4+2)b) Superguards
{
} a) {} 1.g2-g1=R f7-f8=S 2.Rg1-g3 Sf8-g6 # {} b) {Superguards} 1.g2-g1=B f7-f8=Q 2.Bg1-a7 Qf8-f2 #
} a) {} 1.g2-g1=R f7-f8=S 2.Rg1-g3 Sf8-g6 # {} b) {Superguards} 1.g2-g1=B f7-f8=Q 2.Bg1-a7 Qf8-f2 #
6 - h#2,5 superguards b) antiguards
Balasubramanian, SK & Crisan V2024
white Pg6 Sg5 Kh4
black Bf6 Kg7 Ph2
h#2.5 superguards(3+3)b) anti-guards
{}
a) {superguards}
1...Kh4-g4 2.Kg7-h6 Sg5-e6 3.Bf6-h4 Kg4-g5 # {}
b) {anti-guards}
1...Sg5-h7 2.Kg7-h8 g6-g7 {(does not check, black King is no longer "observed" by Bf6 !!)}
3.Bf6-a1 {(only square from which you cannot escape the diagonal)} g7-g8=R #
{Note that} 3...g7-g8=Q + ? {we have} 4.Kh8*h7 !
7 - 2# with neutral locust
Goodare, KJ.1952
neutral Lh2
white Rc1e8 Ke3 Bd6 Sc8 Pa6h5g3e2
black Kd5 Pa7b6f6
#2(9+3+1)🨖h2: neutral Locust
{Set play :}
1...nLh2*g3-f4 + 2.nLf4*f6-f7 # {}
1...nLh2*e2-d2 + 2.Bd6-f4 # {}
1...nLh2*h5-h6 + 2.nLh6*f6-e6 # {}
1...b6-b5 2.Rc1-c5 # {}
1...f6-f5 2.Re8-e5 #
{Tries :}
1.Re8-e4 ? 1...nLh2*h5-h6 + ! 2.nLh6*f6-e6 + nLe6*d6-c6 ! {because Re4 prevents this move from checking}
1.Rc1-c2 ? 1...nLh2*e2-d2 + ! 2.Bd6-f4 + nLd2*c2-b2 ! {}
1.Rc1-c3 ? 1...nLh2*e2-d2 + ! 2.Bd6-f4 + nLd2*c3-b4 ! {}
1.Re8-e7 ? 1...nLh2*h5-h6 + ! 2.nLh6*f6-e6 + nLe6*d6-e8 ! {or}
1...nLh2*g3-f4 + ! 2.nLf4*f6-f7 + nLf7*e7-d7 ! {}
1.Bd6-b8 ? 1...b6-b5 ! {}
1.Rc1-c7 ! {}
1...b6-b5
2.Rc7-c5 # {}
1...f6-f5
2.Re8-e5 # {}
1...nLh2*h5-h6 +
2.nLh6*f6-e6 # {cause} 2...nLe6*d6-c6 {does not avoid check}
1...nLh2*g3-f4 +
2.nLf4*f6-f7 # {car} 2...nLf7*c7-b7 {does not avoid check}
1...nLh2*e2-d2 +
2.Bd6-f4 # {}
8 - serial h#10 3 solutions with eagles
Kotesovec, V.2017
white WAd2
black BAe3a3f7g7 Rg4 Kd3
ser-h#10 3 sol.(1+6)🨴d2, 🨺e3, a3, f7, g7: Eagle
{}
1.Kd3-e4 2.BAa3-e2 {(jumper e3)} 3.BAe3-f4 {(e4)} 4.Ke4-f5 5.Kf5-g5 {}
6.BAg7-h5 7.Kg5-h6 8.Rg4-g7 9.BAe2-g6 {(h5)} 10.BAf7-h7 {(g6)} WAd2-e5 # !
{Eagle e5 make double check via h5 and g7 ;
It controls g5 via f4.
And not} 10...WAd2-g3 + ? {Eg6 plays !.}
1.BAa3-d4 {(d3)} 2.Kd3-e2 3.Ke2-f1 4.BAf7-g1 5.Kf1-g2 {}
6.Kg2-h1 7.Rg4-g2 {(and not immediately Ee3-h2, which would be a self-check)}
8.BAe3-h2 {(g1)} 9.BAg7-f2 10.BAd4-g3 WAd2-f1 # !
{Rg2, being the jumper, must be well enclosed.}
1.Rg4-b4 2.Kd3-c4 3.BAe3-a4 {(a3)} 4.BAa3-c3 {(b4)} 5.Rb4-b6 {}
6.BAg7-b4 7.BAb4-a6 8.BAf7-b5 9.Kc4-b4 10.Kb4-a5 WAd2-d4 # !
{Eagle d4 checks via a4 et b6 ; it control b4 via c3 ;
Two echo mates and a very different 3rd one.}
9 - serial h#8 3 solutions with mooses
Kotesovec, V.2017
white WMb2
black BMb1d8e6f3 Kd4
ser-h#8 3sol.(1+5)🨊b2, 🨐b1, d8, e6, f3: Moose
{}
1.Kd4-d3 2.BMd8-e2 3.BMf3-d2 4.BMd2-f1 {}
5.Kd3-d2 6.Kd2-e1 7.BMb1-f2 8.BMe6-d1 WMb2-f3 # ! { Mate by double check.}
1.BMd8-e3 2.Kd4-c3 3.BMf3-d4 4.BMd4-c2 {}
5.Kc3-d2 6.Kd2-c1 7.BMe6-d2 8.BMe3-d1 WMb2-d3 # ! {}
1.Kd4-e3 2.BMe6-f2 3.Ke3-e2 4.BMf3-d2 {}
5.Ke2-f1 6.BMb1-g2 7.BMd8-e1 8.BMd2-g1 WMb2-g3 # !
{Triple echo.}
10 - h#3 2 solutions with naos et pao
Sizonenko, V.2022
white Sd6 NAf2g4 PAd4 Kg6
black Kc7
h#3 2sol.(5+1)🨷f2, g4: Nao🨵d4: Pao
{}
1.Kc7-b6 NAg4-h2 2.Kb6-a5 NAf2-h6 3.Ka5-a4 Sd6-c4 # {}
1.Kc7*d6 PAd4-f4 2.Kd6-e7 NAf2-e4 3.Ke7-f8 Kg6-f6 #
{Exchange of functions between the Naos and the figure serving as the Pao's jumper, on the subject of guarding the squares.}
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