py_20230110

1 - s#6 circe

Gedda, B.
1981

white Pb7c7 Rh2 Qh1 Ba4a5 Kd7 black Ph7 Rg1 Kf1

s#6 Circe(7+3)

a captured piece is reborn on its original square if it is free.

Solution

{

} 1.b7-b8=S ! {

} 1...h7-h6 2.Kd7-d8 ! h6-h5 3.Ba4-e8 h5-h4 {
} 4.Sb8-d7 h4-h3 5.Ba5-b6 Kf1-e1 6.Qh1*g1[+bRh8] + Rh8*e8[+wBf1] # {

} 1...h7-h5 2.Rh2-g2 ! h5-h4 3.Qh1-h3 Rg1-h1 {
} 4.Kd7-c8 Rh1-h2 {or on g1} 5.Ba4-d7 Rh2-h1 6.Qh3*h1[+bRa8] + Ra8*b8[+wSg1] # {

Chameleon-echo}

2 - h#2 2 sol patrol chess

Antonini, D.
2020

white Ra1h1 Sd1 Ke1 black Kb3 Rb2

h#2 2sol. Patrol Chess(4+2)

you must be supported by a unit of your side to take or give check.

Solution

{

} 1.Kb3-a2 0-0 2.Rb2-b3 Sd1-b2 # {

} 1.Kb3-c2 Sd1-c3 2.Rb2-b3 0-0-0 # {

Short and long castles}

3 - h#2 2 sol magic King

Steudel, Th
1985

white Pe7 Kg7 black Pg3c2 black Magic Kh5

h#2 2 sol.(2+3)
♚h5: magic King

any unit (other than a king) it controls changes colour.

Solution

{

} 1.c2-c1=Q e7-e8=R 2.Qc1-f4 Re8-h8 # {
Kg5 (or g4) is not legal. In pictures :
} 3.mKh5-g5[+wQf4] {

} 1.c2-c1=B e7-e8=S 2.Bc1-f4 Se8-f6 # {
Kh4 is illegal. In pictures :
} 3.mKh5-h4[+wPg3] {or} 3.mKh5-g5[+wBf4][+bSf6]

4 - 1# cylinder tore moebius

Millman, St L & Volet Th
1980

white Sh5g1 Qb7 Kf8 black Sa3d4 Kh8

#1(4+6)
a) normal
b) vertical cylinder
c) horizontal cylinder
d) tore
e) vertical moebius
f) horizontal moebius

vertical, column "i" with i1-i8 replaced by a1-a8 and likewise column "h" to the left of column "a"
horizontal, 9th row with a9-h9 replaced by a1-h1 and likewise the 8th row below the 1st
Moebius vertical, column "i" with i1-i8 replaced by a8-a1 and likewise h8-h1 to the left of a1-a8
horizontal, 9th row with a9-h9 replaced by h1-a1 and likewise h8-a8 below a1-h1
both vertical & horizontal, the bK can access a8, h1 or a1

Solution

{

} a) {normal
} 1.Qb7-g7 # {
} b) { vertical cylinder
} 1.Qb7-a7 # {
} c) { horizontal cylinder
} 1.Qb7-h7 # {
} d) {tore
} 1.Qb7-a8 # {
} e) { vertical moebius
} 1.Qb7-a2 # {
} f) { horizontal moebius
} 1.Qb7-g8 # {
}

5 - 3# breton with Antelopes, Giraffes and Camels

Trommler, S.
2021

white WAa8 WGe8 WCd5 Sh7 Kg6 Bg7 black BAa3 BGe2 BCg1 Pf3e7d6 Rd1c7 Sb3 Kg8

#3(6+10)
🨢a8, 🨨a3: Antelope
🨍e8, 🨓e2: Giraffe
🨷d5, 🨽g1: Camel

bretonWhen a piece is captured, another of the same kind must be removed on the capturing side
bouncer (3,4)
bouncer (1,4)
bouncer (1,3)

Solution

{

} 1.WCd5-a6 {(threatens} 2.WCa6-d7 + Rc7*d7[-g1] 3.WGe8-f4 # {)
} 1...e7-e5 2.WGe8-f4 + BCg1*f4[-e2] 3.Sh7-f6 # {(idem on} 2...e5*f4 { )
} 1...Rd1-d4 2.Sh7-f6 + BGe2*f6[-b3] 3.WAa8*d4 # {(idem on} 2...e7*f6 {)
} 1...Rc7-c4 2.WAa8-d4 + Rd1*d4[-a3] 3.WCa6-d7 # {( idem on} 2...Rc4*d4[-a3] {or} 2...Sb3*d4[-a3] {)
The threat is also realized on } 1...BAa3-d7 2.WCa6*d7[-a8]{etc.

AB-BC-CD-DA cycle .}

6 - 2# Shrinking men b) mirror-position

Turnbull, R & Bissicks P
2012

white Kb3 Qd1 black Ka1

#2 shrinking men(2+1)
b) vertical mirror

Shrinking men a unit may not play further than the last time.
Kings are only allowed one orthogonal move, as they are no longer on the colour of their starting square.
With the White to move, the Queen is allowed to do, at best, only two diagonal steps, since the Black King is not in check.

Solution

{

} a) {
} 1.Kb3-a4 ? {illegal
} 1.Qd1-c1 ? Ka1-a2 2.Qc1-b1 {stalemate and } 2.Qc1-b2 ? {illegal
} 1.Qd1-c2 ! Ka1-a2 2.Qc2-b1 # {
But not} 2.Qc2-b2 + ? Ka2-a1 ! {

} b) mirror a1<-->h1 {vertical mirror
This time, no King is a priori "shrunk": Ke1-f2-g3 & ...Ke8-d7-e6....
But in reality, the Black King is :
the last move could not be ...Kg2-h1 because his White colleague would have been in check.
} 1.Qe1-f2 ? {stalemate.
In the same way} 1.Qe1-f1 ? {or} 1.Kg3-h3 ? {
} 1.Qe1-e2 ? Kh1-g1 2.Kg3-h2 + Kg1-f1 ! {
} 1.Kg3-h4 ! Kh1-h2 2.Qe1-g1 # {
But not } 1.Kg3-g4 ? Kh1-h2 2.Qe1-g1 + Kh2-h3 !

7 - h#2,5 kobul Kings b) ♛h8

Tritten, P.
2013

white Ka8 Rb8 Bg6e3 Pf5f4d3b4b3 black Qe8 Pa6a2c5e6 Ra1 Kb1

h#2.5 Kobul(9+7)
b) ♛e8-->h8

when a unit is captured, the King of the side of the unit acquires his walkway.
It becomes a normal king again if you capture a pawn

Solution

{

} a) {
} 1...Bg6*e8[b1=rQ] 2.rQb1*b3 Be8-a4 + 3.rQb3-b1 b4*c5[b1=K] # {

} b) bQe8-->h8 {De8-->h8
} 1...Rb8*h8[b1=rQ] 2.rQb1*d3 Rh8-h2 3.rQd3-b1 f5*e6[b1=K] # {

Two switchbacks of the Black King after opening a line.}

8 - h#2,5 2 sol Ghost Chess

Beaubestre, Cl
2021

white Rb6 Bb7 black Sc7 Pe5 Kf5

h#2.5 Ghost Chess 2sol.(2+3)

rebirth is done on the capture square as soon as it is released.
The Ghost is then definitely taboo.

Solution

{

} 1...Rb6-e6 2.Sc7*e6 Bb7-f3 3.Se6-g5[+wuRe6] uRe6-f6 # {

} 1...Bb7-d5 2.Sc7*d5 Rb6-g6 3.Sd5-f4[+wuBd5] uBd5-e4 #

9 - serial h#8 mao, moa and grasshopper

Novomesky, D.
2012

white Sb5 Pa3e2 Bf3 Kd1 black Pc5d4c3 Ke6 MAb3

ser-h#8(5+12)
a) 🨓b3
b) 🨽b3
c) 🨥b3

Creeping knight who first makes a Rook step, then a Bishop step
Creeping knight who first makes a Bishop step, then a Rook step
moves on the Queen's lines with the help of a saltire behind which it lands
The arrival square must be free or occupied by an opponent's unit
Solution

{

} a) {
} 1.MAb3-a5 2.MAa5-b7 3.MAb7-d6 4.MAd6-e4 {
} 5.Ke6-d5 6.Kd5-c4 7.MAe4-d2 8.MAd2-b3 {(what a Moa could not do)} Sb5-d6 # {

} b) +bMOb3 {Moa b3
} 1.MOb3-d2 {(what a Mao could not do)} 2.MOd2-e4 3.Ke6-d5 4.Kd5-c4 {
} 5.MOe4-d6 6.MOd6-b7 7.MOb7-a5 8.MOa5-b3 Sb5-d6 # {

} c) +bGb3 {Grasshopper b3
} 1.Gb3-b6 2.Gb6-b4 3.Gb4-e4 4.Ke6-d5 {
} 5.Kd5-c4 6.Ge4-e1 7.Ge1-e3 8.Ge3-b3 Sb5-d6 #

10 - 2# Checkless chess

Checkless chess The only checks allowed are checkmates
Notably, if the only parries to a check make themselves a simple check, then that first check is actually a mate

Gockel, H.
2018

white Pc6g6h3b2 Se7g8 Re4 Qd4 Kc4 Ba2 black Pa6g5f2e5 Bh8 Sh7g4 Qh4 Rf3d6 Ke6

#2 Checkless chess(10+11)

The only checks allowed are checkmates
Notably, if the only parries to a check make themselves a simple check, then that first check is actually a mate

Solution

{

} 1.Qd4-c3 ? {(threatens} 2.Kc4-c5 # {)
} 1...Sg4-f6 {display-departure-file} 2.Qc3*e5 # {
} 1...Sh7-f6 {display-departure-file} 2.Re4*e5 # {as} 2...Sg4*e5 + 3.Kc4-b3 {but not } 2.Qc3*e5 + Sg4*e5 # {: no 3 Kb3 and 3 Kc5+ illegal
} 1...Rf3*c3 + {illegal as} 2.b2*c3 {
but} 1...Rd6-d5 ! {anticipates all problems
} 1.Kc4-c5 + {illegal} 1...Rf3-b3 ! {

} 1.Re4-e3 ! {(threatens} 2.Kc4-c5 # {)
} 1...Sg4-f6 {display-departure-file} 2.Re3*e5 # {
} 1...Sh7-f6 {display-departure-file} 2.Qd4*e5 # {and} 2...Sg4*e5 + {is illegal bescause of } 3.Kc4-b3 {
(} 2.Re3*e5 + ? Sg4*e5 # {:
this check is in fact a mate because the replies} 3.Kc4-b4 + {&} 3.Kc4-c5 + {are simple checks and so illegal
} 1...Rf3*e3 2.Qd4*g4 # {et } 2...Qh4*g4 + {is illegal because of } 3.h3*g4 {!!
} 1...Rd6-d5 2.Qd4*d5 # {
} 1...Rd6*c6 + {illegal :} 2.Qd4-c5 {or} 2.Kc4-b3 {or } 2.Kc4-b4 # ! {
} 1...Sg4*e3 + {illegal : } 2.Kc4-b3 {!!

Mates exchanged AB-BA between the trial and the real play.}

11 - 3# with Edgehogs

Gockel, H.
2021

white EHc1g1a5 Bh3 Pg2c2c4d6e5 Kf7 Sf6h1 Ra4 black EHh4d2 Pc3g3g5 Rg4 Kf5

#3(13+7)
c🨊c1, g1, a5, 🨐h4, d2: Edgehogs

walks like a Queen, but must start from or reach a band.
Without, however, being allowed to go from one band to another, or on the same one

Solution

{

} 1.Ra4-a1 ! {(threatens } 2.WHc1*d2 3.Ra1-f1 # {)

} 1...BHd2*c1 2.Ra1*c1 threat: 3.Rc1-f1 # {

} 1...BHd2-d1 2.Bh3*g4 + 2...BHd1*g4 {display-departure-file} 3.e5-e6 # {
} 2...BHh4*g4 {display-departure-file} 3.Sh1*g3 # {
Note that} 2.e5-e6 + BHd1-d5 3.WHa5*d5 {is legal but doesn't check !

} 1...BHd2-e1 2.Sh1*g3 + 2...BHe1*g3 {display-departure-file} 3.e5-e6 # {
} 2...BHh4*g3 {display-departure-file} 3.Bh3*g4 # {

} 1...Kf5-f4 2.WHc1*d2 {(threatens } 3.Ra1-f1 # {)
Note that on} 2.WHc1-b2 {or} 2.WHc1-a3 {with same threat, Black replies} 2...BHd2-c1 {or d1 or e1}

Add a comment

Name

E-mail

Website

Anti-spam