py_20190416
Click in the right part of the chessboard to move forward, left to move backward... or directly on the move in the solution
1 - self helpmate 3# 2 solutions with neutral pao and vao
Parrinello, M.2014
neutral VAe6 PAg6
black Qe4 Pg7f5e5c6c5 Ke3 Bf4
white Sf6 Kd1
hs#2(2+8+2)🩁g6: neutral Pao🩂e6: neutral Vao2 solutions
{}
1.nPAg6-g2 nPAg2-d2 2.nPAd2-d6 Ke3-d4 + 3.Sf6-d5 + Kd4*d5 # {}
1.nVAe6-c4 nVAc4-e2 2.nVAe2-h5 Ke3-f3 + 3.Sf6-g4 + Kf3*g4 #
{"Every solution is like a beautiful dance.
A charming problem, one to be remembered" (J. Vysotska).}
2 - 2# circe madrasi
(Correction of an old problem in collaboration with N. Macleod)Cheylan, Y.2004
white Bb8e8 Ka8 Qf6 Pg2 Sh8e4f2 Re1h5
black Qe5 Sc6 Rc8 Kf4 Bh3
#2 circé madrasi(10+5)
{Try :}
1.Sh8-g6 + ? Sc6-e7 ! {paralyses wN.}
1.Be8-d7 ! {threatening} 2.Sf2*h3 # {(and not} 2.Rh5-h4 + ? Rc8*h8[+wSg1] ! {nor } 2.Sf2-d3 + ? Sc6-b4 ! {)}
1...Rc8-e8 {(or} 1...Rc8-f8 {or} 1...Rc8-g8 {, crossing the critical square d8)}
2.Bb8*e5[+bQd8] # {(et non } 2.Sf2*h3[+bBc8] + ? Kf4-g4 ! {)}}
1...Rc8-d8
2.Rh5*e5 # { (no rebirth)}
1...Rc8-c7
2.Rh5-h4 # { (bR no longer has access to the "h" column)}
1...Rc8*h8[+wSg1]
2.g2-g3 # {(and not} 2.Sg1*h3[+bBc8] {display-departure-file} Kf4-f5 ! { : this square is free, although apparently controlled 3 times.)
note that} 1...Rc8*b8[+wBc1] {is illegal}
3 - h#1 breton
Tritten, P.2018
white Kf1 Pg2g3 Sh5 Rh8 Bh3
black Qh2 Ph7 Sh4 Bh6 Kh1
h#1 breton chess(6+5)b) exchange of ♞ & ♝
{}
a) {}
1.Sh4*g2[-h7] Bh3*g2[-h5] # {(the Queen cannot capture g2 because Bh6 would disappear)}
b) bBh4<-->bSh6 {exchange of bN & bB}
1.Bh4*g3[-h7] 2.Sh5*g3[-h3] # {(the Queen cannot capture g3 as the Nh6 would disappear)
A line clearance that even Valentin Marin would not have dared to dream of.}
4 - h#2 2 solutions breton
Tritten, P.2018
white Pd2 Kf8 Ra7 Se5 Bg4
black Bf4 Ke4 Qb5 Pd4 Sd5f2 Re7c6
h#2 breton chess(5+8)2 solutions
{ }
1.Re7*e5[-d5] Ra7-f7 2.Sf2-d3 Bg4-f3 # {
(3.Kxf3 is impossible because the Bf4 would disappear. In illustration : } 3.Ke4*f3[-f4] {)}
1.Sd5-e3 Ra7-d7 2.Qb5*e5[-f2] d2-d3 # {(3.Kxd3 is impossible because the Pd4 would disappear. In illustration : } 3.Ke4*d3[-d4] {)}
5 - #2 extinction chess
Rosner, E & Gockel H2017
white Qd1 Pd6b2e3 Kd8 Bb4 Sf7c1
black Bc4 Ka6 Qh1 Pe7a7b5a4b3e4d3h5 Sb6f1 Rd5
#2 extinction chess(8+14)
{
Essais :} 1.Sc1-e2 ? {threatening} 2.Qd1-c1 # {the "Black Bishop" species will become extinctet sur)} 1...Rd5-f5 {there is a checkmate by } 2.Se2-g3 # {but } 1...d3-d2 ! {prevents the threat} 1.Sc1*b3 ? {threatening} 2.Sb3-c5 # {the species "Black King" or "Black Rook" will become extinct; but not } 2.Qd1-c1 + Bc4*b3 !{} 1...a4*b3 2.Qd1-c1 # {} 1...Ka6-b7 2.Sb3-a5 # {( the species "Black King" or "Black Bishop" will become extinct)} 1...e7*d6 2.Sf7*d6 # {(attacks Bc4 and } 2...Rd5*d6 {is illegal)} 1...Sb6-d7 2.Kd8*d7 # {or} 1...Sb6-c8 2.Kd8*c8 # {because the species "Black Knight" or "Black Queen" will become extinctmais} 1...Sb6-a8 ! {puts the Knight on a safe square} 1.Sc1*d3 ! {threatening} 2.Sf7-e5 # {display-departure-file} {} 1...e4*d3 2.Qd1-c1 # {} 1...Rd5-f5 2.Sd3-c5 # {} 1...e7*d6 2.Sf7*d6 # {"Tertiary threat correction"}
Essais :} 1.Sc1-e2 ? {threatening} 2.Qd1-c1 # {the "Black Bishop" species will become extinctet sur)} 1...Rd5-f5 {there is a checkmate by } 2.Se2-g3 # {but } 1...d3-d2 ! {prevents the threat} 1.Sc1*b3 ? {threatening} 2.Sb3-c5 # {the species "Black King" or "Black Rook" will become extinct; but not } 2.Qd1-c1 + Bc4*b3 !{} 1...a4*b3 2.Qd1-c1 # {} 1...Ka6-b7 2.Sb3-a5 # {( the species "Black King" or "Black Bishop" will become extinct)} 1...e7*d6 2.Sf7*d6 # {(attacks Bc4 and } 2...Rd5*d6 {is illegal)} 1...Sb6-d7 2.Kd8*d7 # {or} 1...Sb6-c8 2.Kd8*c8 # {because the species "Black Knight" or "Black Queen" will become extinctmais} 1...Sb6-a8 ! {puts the Knight on a safe square} 1.Sc1*d3 ! {threatening} 2.Sf7-e5 # {display-departure-file} {} 1...e4*d3 2.Qd1-c1 # {} 1...Rd5-f5 2.Sd3-c5 # {} 1...e7*d6 2.Sf7*d6 # {"Tertiary threat correction"}
6 - 2# lortap
Gockel, H.2018
white Ba3 Ka7 Qb5 Pc6e6g6g4 Sh3c4 Rc7f1
black Qf4 Pb6e5e4d4 Sb7h7 Kf6
#2 lortap(11+8)
{It should be noted that } 1.Sc4*e5 {et} 1.Sc4*b6 {are illegal as Nc4 is observed by Qb5Tries :}
1.Sc4-b2 ? {or} 1.Sc4-a5 ? {threatening} 2.Qb5*e5 # {but} 1...Sb7-c5 ! {}
1.Sc4-d2 ? {threatening} 2.Sd2*e4 # {, bQ being observed by Pe5, but not} 2.Qb5*e5 + ? Qf4*e5 !
{, Rf1 being observed by Nd2}
1...Qf4-f3 2.Qb5*e5 # {but} 1...Sb7-d6 ! {}
1.Sc4-e3 ? {does not threaten anything as } 2.Se3-d5 {does not even check}
1.Qb5*e5 {threatening} 2.Sc4-b2 # {but } 1...Kf6-e7 {or} 1...Kf6-g7 {wR being observed, but not} 1...Sb7-c5 ? 2.Sc4-d6 # {}
1.Sc4-d6 ! {("Tertiary threat correction" which is} 2.Sd6-e8 # {. note than } 2.Sd6*e4 {and} 2.Qb5*e5 {are illegal )}
1...Sb7*d6
2.Qb5*e5 # {}
1...Sb7-c5
2.Sd6*e4 # {(but not } } 2.Sd6-e8 ? Kf6-e7 {wR being "observed" by the Ne8 }
7 - h=2 4 solutions super-circe with rose and locust
Soulivy, K.2014
neutral Lh1
black Sb7 Kd3
white ROf7
=2 super-circe(1+2+1)4 solutionsf7: Rose🨖h1: neutral Locust
{}
1.Sb7-d8 ROf7*d8[+bSg2] 2.Kd3-e3 nLh1*g2-f3[+bSd3] {=It is well stalemate : Nd3 cannot play without activating the neutral Locust f3,
which cannot run away. The Rose d8 protects this Locust (via f7-g5) and controls d2 (via b7-a5-b3) and d4.
The other escape squares are forbidden by the Locust.}
1.Kd3-c3 nLh1*b7-a8[+bSa6] 2.Kc3-b4 nLa8*a6-a5[+bSc3] {= it is well stalemate : Nc3 cannot play without activating the neutral Locust a5,
which cannot escape; the Rose f7 protects the said Locust (via d8-b7) and controls b3 (via g5-f3-d2) and c4}
1.Kd3-e3 nLh1*b7-a8[+bSe4] 2.Ke3-f4 nLa8*e4-f3[+bSf5] {=}
1.Kd3-d4 ROf7*b7[+bSf3] 2.Kd4-d5 nLh1*f3-e4[+bSc6] {=
Double stalemate tableau with ortho-diago echo !}
8 - h#2,5 2 solutions Mars circe with neutral Queen and Rook
Smits, G.2014
neutral Qd8 Rg8
black Kh5 Rh3 Be2
h#2.5 Mars circe(0+3+2)2 solutions🨁d8: neutral Queen🨂g8: neutral Rook
{}
1...nRg8-g4 {(unpinning bB.)} 2.Be2-d3 {(There is now a nQ/nR battery.)} nQd8-g5 {(no check)} 3.Bd3-g6 nRg4*h3 # {
(If a neutral piece runs away, the check is not parried, as it is double (from d1 & h1).}}
1...nQd8-h4 {(unpinning bR)} 2.Rh3-g3 {(there is now a nR/nQ battery)} nRg8-g6 3.Rg3-g5 nQh4*e2 #
9 - serial h=13 anti-circe
Ersek, T.2016
white Bh5a1 Ke1 Qc8 Pe4b2 Sa8 Rb1
black Sf2 Pd7h6 Ke6 Rg7 Bf3
ser-h#13 anti-circe(8+6)
{}
1.Sf2-d1 2.Sd1*b2-b8 3.Sb8-a6 4.Sa6-c7 {} 5.Sc7*a8-g8 6.Sg8-e7 7.Se7-g6 {}
8.Sg6-h8 ! 9.Rg7-g6 10.Ke6-f7 11.d7-d5 12.d5*e4-e7 {} 13.Bf3-a8 Rb1-b7 {stalemate !.}
Add a comment