py_20220524
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1 - maximum selfmate 4# circé
Yzarn, X.1969
white Rc2c5 Ka5 Sf2 Ph3e4 Be6
black Pc6 Bc8 Ka3 Rg2
s#4 Maximum Circe(7+4)
{}
1.Sf2-h1 ! zugzwang.
1...Rg2-g8
2.Rc5-g5 {(ici,} 2...Rg8*g5[+wRa1] + ?
{would be illegal)}
2...Rg8-d8
3.Rc2*c6[+bPc7]
3...Rd8-d1
4.Rc6-d6
{Justification of the key :} 4...Rd1*h1[+wSb1] {is of the same length as 4...Rd5 but is illegal because the Knight is reborn on b1.
And of course}
4...Rd1*d6[+wRa1] {is illegal as already seen.}
4...Rd1-d5 # {: none of the 4 white units can capture this Rook which would be reborn on a8.
"A spark of originality and spirit" (H. Kluver, which awards the first prize in a French magazine that used to be of high quality).}
2 - 2# circe
Petkov, P.1971
white Sh2b3 Bg3c4 Rf3e3 Pe2d4f4 Qb1 Kd5
black Qf2 Ke1 Pg2h3b4e4f5 Bd2d1 Sg1
#2 Circe(11+10)
{Essais :}
1.Bg3*f2[+bQd8] ? {is a self-check}
1.Kd5-c5 ? Qf2*g3[+wBc1] ! {(} 2.Bc1*d2[+bBf8] ? {self-check)}
1.Kd5-c6 ? e4*f3[+wRh1] ! {(} 2.Rh1*g1[+bSb8] ? {self-check)}
1.Kd5-e6 ? Bd2*e3[+wRa1] ! {(} 2.Qb1*d1[+bBc8] ? {self-check)}
1.Kd5-e5 ! {}
1...Bd2-c1 2.Bg3*f2[+bQd8] # {}
1...Qf2*g3[+wBc1] 2.Bc1*d2[+bBf8] # {}
1...e4*f3[+wRh1] 2.Rh1*g1[+bSb8] # {}
1...Bd2*e3[+wRa1] 2.Qb1*d1[+bBc8] #
3 - 2# masand
Gockel, H.2018
white Kd8 Qf8 Bb6 Pa4d6f5 Sf1 Rc3
black Sh8g4 Rg7 Pf7b5e5 Kd5 Qe4
#2 Masand(8+8)
{Essais :}
1.Kd8-d7 ? {(threatens} 2.Qf8-a8[a4=b][h8=w] # {)}
1...Qe4*f5[f1=b][g4=w][e5=w][f7=w] + 2.Sg4-e3[f1=w][f5=w] #
1...Qe4-c4 2.Sf1-e3[c4=w][g4=w][f5=b] #
1...f7-f6 + 2.Qf8-g8[g7=w][h8=w] #
{but} 1...b5*a4 ! {is the correct defence : } 2.Qf8-a8[a4=w] + ? Qe4*a4[a8=b] + ! {}
1.Kd8-c7 ! {(threatens} 2.Qf8-a8[a4=b][h8=w] # {)}
1...Qe4-c4[f1=b][c3=b][a4=b][g4=w][b5=w] + 2.Sg4-e3[f1=w][c4=w][f5=b] # {}
1...Qe4*f5 2.Sf1-e3[g4=w][f5=w] # {}
1...f7-f6 + 2.Qf8-g8[g7=w][h8=w] #
{Mats exchanged between trial and real play.}
4 - 2# Bulgarian grasshoppers
Loerinc, J.2021
white Ga7h7f2 Qf5 Kg2 Pe2d2c2 Ra2
black Kd6
#2 (9+1)🨟a7, h7, f2: bulgarian grasshoppers
{
} 1.Gh7-e4[-f5][+wQf1] {(blocus, leaving the Black King with a complete rosace. Note that the bGf2 must control d2, which it does very well because, on a possible} 1...Kd6*d2 {, she would play} 2.Gf2*d2[-e2][+wPh2] {(Pe2 on h2).} 1...Kd6-c7 2.Ga7-d7[-c7][+bKc1] # {} 1...Kd6-d7 2.Ga7-e7[-d7][+bKd1] # {} 1...Kd6-e7 2.Ge4-e8[-e7][+bKe1] # {} 1...Kd6-c6 2.Ge4-b7[-c6][+bKc1] # {} 1...Kd6-e6 2.Ge4-e7[-e6][+bKe1] # {} 1...Kd6-c5 2.Ga7-d4[-c5][+bKc1] # {(et non} 2.Gf2-b6[-c5][+bKc1] Kc1*d2! {)} 1...Kd6-d5 2.Ge4-c6[-d5][+bKd1] # {} 1...Kd6-e5 2.Ge4-e6[-e5][+bKe1] # {Comment from G. Foster : "The key seems exceptionally generous, giving 5 escapes and exiling the Queen on f1. But on the other hand, mates require that this Queen be on the first line, so that the key is, in the end, quite strong".}
} 1.Gh7-e4[-f5][+wQf1] {(blocus, leaving the Black King with a complete rosace. Note that the bGf2 must control d2, which it does very well because, on a possible} 1...Kd6*d2 {, she would play} 2.Gf2*d2[-e2][+wPh2] {(Pe2 on h2).} 1...Kd6-c7 2.Ga7-d7[-c7][+bKc1] # {} 1...Kd6-d7 2.Ga7-e7[-d7][+bKd1] # {} 1...Kd6-e7 2.Ge4-e8[-e7][+bKe1] # {} 1...Kd6-c6 2.Ge4-b7[-c6][+bKc1] # {} 1...Kd6-e6 2.Ge4-e7[-e6][+bKe1] # {} 1...Kd6-c5 2.Ga7-d4[-c5][+bKc1] # {(et non} 2.Gf2-b6[-c5][+bKc1] Kc1*d2! {)} 1...Kd6-d5 2.Ge4-c6[-d5][+bKd1] # {} 1...Kd6-e5 2.Ge4-e6[-e5][+bKe1] # {Comment from G. Foster : "The key seems exceptionally generous, giving 5 escapes and exiling the Queen on f1. But on the other hand, mates require that this Queen be on the first line, so that the key is, in the end, quite strong".}
5 - h#2 2 solutions with bulgarian lions
Gadjanski, B.2021
white LIa8 Kc6 Sd5
black Kg8 Ra4
h#2 2sol(3+2)🨴a8: bulgarian Lion
{}
1.Ra4-a3 ! LIa8-h8[-g8][+bKa2] 2.Ka2-a1 Sd5-c3 # !
{It's a real checkmate, because after } 3...LIh8*a1 {, Knight can play on c7 or c8.}
1.Kg8-h8 ! LIa8-a1[-a4][+bRe8] 2.Re8-f8 Sd5-f6 # !
{It's checkmate, because after} 3...LIa1*h8 {, Knight can play on b6 or a6}
6 - 2# breton
Loustau, JM.2018
white Bc8h2 Qf7 Se6d2 Rc5f1 Pa4d4h3 Ka2
black Qa7 Bf6 Kf5 Rf4 Pe5 Sf2g3
#2 breton(11+7)
{Essais :}
1.Bc8-d7 ? {(threatens} 2.Qf7-h7 # {)} 1...Rf4-h4 ! {(} 1...Rf4-g4 ? 2.Rc5*e5[-h3] # {using g4 self-blocking))}
1.Rc5*e5[-h3] ? Kf5-g4 ! {or} 1.Rc5*e5[-d4] ? Kf5*e5 ! {or} 1.Rc5*e5[-a4] {illegal}
1.d4*e5[-e5] ? Qa7*c5[-f4] ! {}
1.Bc8-b7 ! {(threatens} 2.Bb7-e4 # {because the capture of the Bishop, leading to the disappearance of Bf6, is illegal.)}
1...Sg3-e4 {display-departure-file} 2.Rc5*e5[-d4] # {because} 2...Kf5*e5[-f4] {is illegal ; but not} 2.Bb7*e4[-d2] + ? Kf5*e4 {or} 2.Bb7*e4[-e6] + ? Kf5-g5
{according to the White Rider who was removed}
1...Sf2-e4 {display-departure-file} 2.d4*e5[-e5] # {because} 2...Qa7*c5[-f4] {and} 2...Se4*c5[-f4] {are illegal}
1...Qa7*c5[-f4] {, does not counter the threat)} 2.Bb7-e4 # {}
1...Rf4-e4 {(does not counter the threat)} 2.Bb7*e4[-f1] # {or} 2.Bb7*e4[-c5] # {}
1...Qa7*b7[-f6] { illegal}
7 - h#2 2 solutions mirror circe
Dragoun, M.2003
white Kb2 Rg1 Sc6 Bg6 Pg2
black Qd1 Be8 Re6h1 Kf6
h#2 mirror Circe(5+5)2 solutions
{}
1.Rh1-h3 g2*h3[+bRh1] 2.Rh1*h3[+wPh7] h7-h8=Q # {(et} 3.Rh3*h8[+wQd8] {is impossible)}
1.Qd1-f3 g2*f3[+bQd1] 2.Qd1*f3[+wPf7] f7*e8=S[+bBf1] # {(et} 3.Re6*e8[+wSg8] {is impossible)
Round trip in each solution.}}
8 - h#2 circé assassin avec moa rider
Uitenbroek, H.2018
white oad5 Sa5 Kh1
black Pc6b5b3b2c2d2 Kc8
h#2 Circe assassin(3+7)🨷d5: Moa riderb) ♚c8-->b8
{}
a) {}
1.c2-c1=S Sa5*b3[+bPb7] 2.b2-b1=Q OAd5-e7 #
{It is well checkmate: the bK cannot go to b8} 3.Kc8-b8 {because of} Sb3*c1[+bSb8] {, neither on d8} 3.Kc8-d8 {because of} OAe7*b1[+bQd8] {
, nor on c7} 3.Kc8-c7 {because of} OAe7*c6[+bPc7] {, nor on d7} 3.Kc8-d7 {because of} Sb3*d2[+bPd7] {}
b) bKc8-->b8 {Kc8-->b8}
1.d2-d1=B OAd5-c3 2.b2-b1=R Sa5*c6[+bPc7] #
{bK cannot go to a8} 3.Kb8-a8 {because of} OAc3*b1[+bRa8] {forcing the revival on a8 which pulverizes the Black King,
on c8} 3.Kb8-c8 {because of} OAc3*d1[+bBc8] {nor on b7} 3.Kb8-b7 {because of} OAc3*b5[+bPb7]
{Noter that} 1...c6-c5 ? {does not work fine :} 2.Sa5-c6 + Kb8-a8 {and} 3.OAd5-c7 {is illegal, which explains the choice of this creature rather than a simple nightrider}
9 - h#2 set play sentinelles
Tura, W.2018
white Sc5 Bb8h5 Kc4
black Qb6 Ke7 Sf8
h#2 Sentinelles(5+5)Jeu Apparaent
{J.A.}
1...Bb8-e5 2.Qb6-d8[+bPb6] Be5-f6[+wPe5] # {Essai :}
1.Qb6-d8[+bPb6] ? Bb8-e5 {(no waiting move because ...b5 checks)} 2...Be5-f6[+wPe5] # ! {}
1.Qb6-f6[+bPb6] ? Bb8-c7 2.Qf6-d6[+bPf6] Bc7-d8[+wPc7] 3.Qd6*d8[+bPd6] {}
1.Qb6-a5[+bPb6] ? {so no Qd8} 1.Qb6-d6[+bPb6] Bb8-c7 2.Qd6-f6[+bPd6] Bc7-d8[+wPc7] #
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