variantim 70 םיטנאירו december 2016 תורעהו םינורתפ ... · 7 2891 zivko...

13
1 Variantim 70 וריאנטיםDecember 2016 מקוריות: פתרונים והערותOriginals: Solutions & Comments IRT judges: #2: Yossi Retter (2016) #3: Zoran Gavrilovski (2016-7); #n: Viktor Volchek (2015-7); Studies: Yehuda Hoch (2016) H#: Zivko Janevski (2016); S#: Mark Erenburg (2015-6) Fairies: Paul Raican (2016) Editors: עורכים:Orthodox: Evgeni Bourd Fairies: Michael Grushko Studies: Ofer Comay [email protected] [email protected] [email protected] בעיות רגילות: יבגני בורד בעיות אגדתיות: מיכאל גרושקו סיומים: עופר קומאי2868 Arieh Grinblat Ashdod #2vv 10+6 1.Re8? [2.Rxf5#[A] 1...fxe4 2.Sd7#[B] but 1...f4! 1.Rf4? [2.Sd7#[B] 1...Rd6 2.Bg7#[C] 1...exd5 2.Rxf5# but 1...Ra7! 1.Rd8! [2.Bg7#[C] 1...Ra7 2.Bd6# 1...exd5 2.Rxf5#[A] All three threats are transferred to variation mates in a pseudo-cyclical way in a commendable unity (PE) 2869 Yakov Rossomakho Russia #2v 8+8 1.Sc5? [2.Sb3#] 1...Bxc5 2.Sc2# 1...Kxc5 2.Qc3# but 1...e4! 1.Be4! [2.Qxd3#] 1...fxe4 2.Rd6# 1...Kxe4 2.Sf6# 1...Rxe3 2.Qb4# Flight giving keys and harmony between try and solution (PE) 2870 Semion Shifrin Nesher #2v 10+7 1.cxd5? [2.Se4 A #] 1...Kxd5 2.Qe5# 1...cxd5 2.Rb5 B # 1...Sxd6 2.Qxd6# but 1...Sb6! 1.Sxc6! [2.Sb7#] 1...Kxc6 2.Rc7# 1...Sxc6 2.Rb5 B # 1...Sxd6 2.Qxd6# 1...dxc4 2.Se4 A # Flight giving keys and two transfers, one of the threat (PE) BdRd G d dddd rd dpd d d HPip)K d dPd d dd)d bd d $ d dhdd d $ dKd g dNdpd d d dRd dpdB0pd didd d dpHr) d!dd dddd $nG d d H dRh d dpH ! d d ipd d dP0 ) d dPd dKd dgdd dddd

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Page 1: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

1

Variantim 70 וריאנטים

December 2016

מקוריות: פתרונים והערות

Originals: Solutions & Comments

IRT judges: #2: Yossi Retter (2016) #3: Zoran Gavrilovski (2016-7); #n: Viktor Volchek (2015-7);

Studies: Yehuda Hoch (2016) H#: Zivko Janevski (2016); S#: Mark Erenburg (2015-6)

Fairies: Paul Raican (2016)

Editors: :עורכים

Orthodox: Evgeni Bourd

Fairies: Michael Grushko

Studies: Ofer Comay

[email protected]

[email protected]

[email protected]

יבגני בורדבעיות רגילות:

מיכאל גרושקובעיות אגדתיות:

עופר קומאיסיומים:

2868

Arieh Grinblat

Ashdod

#2vv 10+6

1.Re8? [2.Rxf5#[A] 1...fxe4 2.Sd7#[B] but 1...f4!

1.Rf4? [2.Sd7#[B] 1...Rd6 2.Bg7#[C] 1...exd5 2.Rxf5# but 1...Ra7!

1.Rd8! [2.Bg7#[C] 1...Ra7 2.Bd6# 1...exd5 2.Rxf5#[A]

All three threats are transferred to variation mates in a pseudo-cyclical way in

a commendable unity (PE)

2869

Yakov Rossomakho

Russia

#2v 8+8

1.Sc5? [2.Sb3#] 1...Bxc5 2.Sc2# 1...Kxc5 2.Qc3# but 1...e4!

1.Be4! [2.Qxd3#] 1...fxe4 2.Rd6# 1...Kxe4 2.Sf6# 1...Rxe3 2.Qb4#

Flight giving keys and harmony between try and solution (PE)

2870

Semion Shifrin

Nesher

#2v 10+7

1.cxd5? [2.Se4 A #]

1...Kxd5 2.Qe5# 1...cxd5 2.Rb5 B # 1...Sxd6 2.Qxd6# but 1...Sb6!

1.Sxc6! [2.Sb7#]

1...Kxc6 2.Rc7# 1...Sxc6 2.Rb5 B # 1...Sxd6 2.Qxd6# 1...dxc4 2.Se4 A #

Flight giving keys and two transfers, one of the threat (PE)

BdRd'G'd d'd'd'd' rd'dpd'd d'HPip)K 'd'dPd'd d'd')'d' bd'd'$'d d'h'd'd'

'd'$'dKd g'dNdpd' 'd'd'dRd dpdB0pd' 'd'i'd'd d'dpHr)' 'd'!'d'd d'd'd'd'

'$nG'd'd H'dRh'd' 'dpH'!'d d'ipd'd' 'dP0')'d dPd'dKd' 'd'g'd'd d'd'd'd'

Page 2: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

2

2871

Gerhard Maleika

Germany

#2 4 solutions 13+4

1.Re7! waiting 1...Qd4+ 2.Re5# 1...Kd4/Qd3/xd1 2.Qxd2/Qxd3/Rxd1#

1.Rc7! waiting 1...Qd4+ 2.Sf6# 1...Kd4/Qd3/xd1 2.Qxd2/Qxd3/Rxd1#

1.Rg5! waiting 1...Qd4+ 2.f6# 1...Kd4/Qd3/xd1 2.Qxd2/Qxd3/Rxd1#

1.f6! waiting 1...Qd4 2.Rg5# 1...Kd4/Qd3/xd1 2.Qxd2/Qxd3/Rxd1#

Four different relies to the checking variation after keys providing this check

(PE)

2872

David Shtern

Petah Tikva

#2 11+10

1.Sb6! [2.Sxd7#]

1...cxb6 2.Rxe6# 1...Kxd6 2.Sc4# 1...Kxf6 2.g8=S# 1...Sxf6 2.Qh2#

A problem in classical style with a key providing two flights (PE)

2873

Felix Rossomakho

Russia

#3 11+14

1.Sd7! [2.Bc5+ Sxc5 3.Qxc5# 2...Kd5 3.Sxb4#]

1...Bd4 2.Sd8! [3.Sxf7#] 2...exf5, Sh8/e5 3.Qd5#

1...Rd4 2.Kd8! [3.e8=S#] 2...Sc5 3.Qxc5# 2...exf5, Sxe7 3.Qe5#

1...exf5 2.Sd4 [3.Qd5, Qe5#] 2...Rxd4 3.Qe5# 2...Bxd4 3.Qd5#

2...c5 3.Qb6# 2...Sc5 3.Qxc5#

Delayed Grimshaw with replies on d8 and interesting use of the half-pin on

the 6th row. The 3rd variation with Novotny on the Grimshaw square makes the

problem special (PE)

2874

Arieh Grinblat

Ashdod

#3 13+9

1.Qg6! [2.Qxd3+ Sxd3 3.Sc2#]

1...S6e4 2.Sb5+[A] Kxc5 3.Be3#[B]

1...S2e4 2.Be3+[B] Kc3 3.Sb5#[A]

Exchange of white 2nd and 3rd moves after unified defenses and replies

involving line opening enabling the flight-giving 2nd moves (PE)

'd'H'd'I d'd'd'$' 'd')'d'd d')kdPd' '0'dN)'d dP0'd'd' 'dB1'd'd G'dQdRd'

'G'g'd'! d'0pdp)' Rd'$p)pd dpdNiP0n ')'dPd'd d'd'I'd' 'd'd'd'd d'd'd'd'

BH'dKd'd )'0')pd' ndNipdn$ !'d'dPd' '0pd'd'0 d'grd'db 'dq$'G'd d'drd'd'

'd'd'd'd d'H'4'd' 'd'd'h'! $')')'d' '0Pi')'g dPdpdK0r Pd'G'hRd d'd'H'd'

Page 3: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

3

2875

David Shtern

Petah Tikva

#3 10+7

1.h5? [2.Qh4] but 1...cxb2! 1.bxc3? zz but 1...a5!

1.d5! [2.d6 ~ 3.Sf6#]

1...cxd5 2.Qc2 ~ 3.Qa4#

1...exd5 2.f5 ~ 3.e6#

1...cxb2 2.dxc6+ bxc6 3.Qd2#

Quiet play with mostly line openings (PE)

2876

Yossi Retter

Jerusalem

#3 11+1

1.Sdb3? [2.Sd4#] 1…Sxc4 a ! 2.Bxc3 A [3.Bxg4#] Se5? 3.Sd4# but

2...Se3!

1.Sb7? [2.Sd6#] 1...Sf3 b ! 2.Qb8 B! [3.Bxg4#] Se5? 3.Sd6# but 2...Sh2!

1.Qb8?! 1...cxd2! 1.Bxc3? 1...a1=Q! 1.Re1? 1...c1=S!

1.Sf1! [2.Se3#]

1...Sc6 2.Re1! (Bxc3? Qb8?) Se5..Se3#

1...Sxc4 a 2.Bxc3 A! (Re1? Qb8?)

1...Sf3 b 2,Qb8 B! (Re1,Bxc3?)

A great achievement! First, the refutation to the tries become apparent only on

black’s 2nd move, something unique! Second, we have a special kind of

Vladimirov in which white replies in the solution in the same way as in the

tries, but now successfully (PE)

2877

Itzhak Nevo

Evgeni Bourd

Ein Harod/Givatayi

#3 9+8

1.Bd4! [2.Rc1 [3.Rc6#] 2...Rxe6 3.Rd8# 2...Sc5/b4/xc1 3.B(x)c5#]

1...Re1 2.Sc4+ dxc4 3.Bc5#

1...Bh3 2.Bc5+ Sxc5 3.Sc4#

Very nice half-pin play. Only after the black rook and bishop move away the

half-pin can be activated (PE)

2878

Valery Barsukov

Russia

#5 8+6

1.Rc1! ~ 2.Rc7 ~ 3.Rxd7# 2...d6 3.Rc4+ Kd5 4.Ree4 e1=Q/S/R/B 5.Rcd4#

1...e1=Q/S/R/B 2.Rc4+ Kd5 3.Rxe1 d6 4.Rc6 Kd4 5.Rxd6# 3...Kd6 4.Ree4

Kd5 5.Rcd4#

Self-block by the black pawn (PE)

'$'d'dNd dpdkd'd' pIpdpd'd d'd')'d' 'd')p)P) d'0'd'd' ')'d'd'! d'd'd'd'

Qd'd'd'd d'dbdp4' 'd'd'0rg d'HPhk0B ')Pd'dpd d'0pd'I' pdpH')'d G'$'d'd'

Bd'dRdNd d'd'd'0' 'I'iP0'd 0'dp4'd' 'd'd')'d d'Gnd'd' 'd'H'd'd d'dRdbd'

'd'd'd'd 0'dpdpd' Pd'd')'d dKd'd'd' 'd'i'd'd d'dP$pd' ')'dp)'d d'd'$'d'

Page 4: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

4

2879

Valery Barsukov

Russia

#6 8+7

1.Sd1! [2.Sf2 [3.Sd3 ~ 4.Be5#] 2...Bc4 3.bxc4 zz b3 4.Sd3 ~ 5.Be5#]

1...Bd5 2.Sf2 [3.Sd3 ~ 4.Be5#] 2...Be4 3.Sd3 [4.Be5#]

3...Bxd3 4.cxd3 zz c2 5.d4 ~ 6.Be5#

The black bishop finds a better way to attack d3 but the white pawn manages

to do the job of the white knight (PE)

2880

Michal HliKa

Ľuboš Kekely

Slovakia

Draw 6+3

2881

Mario G. García

Roland Ott

Argentine/Switzerland

Win 6+7

2882

David Gurgenidze

Martin Minski

Georgia/Germany

Draw 4+7

'd'd'dbd d'dpd'd' 'd')'i'I d'd'dpH' '0'd'G'd dP0'H'dp 'dPd'd') d'd'd'd'

'dNdKd'd )'d'd'd' 'd'dk)'d dBd')'d' 'd'drd'd d'd'd'd' qd'd'd'd d'd'd'd'

KG'd'd'd 0'd'd'd' 'd'd'0'd iP)p0P0' 'd')'d'd d'd'd'd' 'd'dbd'd d'd'd'd'

'!'d'd'd d'dkd'dP qd'd'd'd d')'dp0' 'd'd'd'd d'd'dpdK 'd'd'dnd d'g'd'd'

Page 5: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

5

2883

Vasilij G. Lebedev

Ilham Aliev

Russia/Azerbaijan

Win 7+6

2884

Peter Krug

Austria

Draw 7+5

2885

Peter Krug

Austria

Win 5+5

2886

Pavel Arestov

Russia

Win 7+4

'd'd'd'i $'d'dPdn 'd'd'd'd d'd'd'dp 'd'db1') d'd'dpdK 'd'dBd'd $'d'd'dQ

'd'd'd'I d'd'i'dP 'd'd'0') dNd'd'd' 'd'dPd'd dr)'d'dn 'd'dPd'd g'd'd'd'

'd'd'd'd d'd'0'H' Bd'd'd'd d'd'd'd' 'd'd')pd d'd'I'h' 'd'd'd'0 d'd'd'Hk

'drg'i'I d'd'd'd' RdPd')'d d'dNdP)' 'd'd'd'd d'd'd'd' '0'd'd'd d'd'd'd'

Page 6: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

6

2887

Steffen S. Nielsen

Denmark

Draw 5+4

888

Vladislav Tarasiuk

Ukraine

Win 6+7

2889

Vladislav Tarasiuk

Ukraine

Win 6+4

890

Daniel Keith

France

Win 4+5

'd'G'd'd d')rd'd' ')Kd'd'd d'd'd'd' 'g'd'd'd d'i'd')b 'd'd'd'd d'd'd'd'

'd'd'd'd d'd'd'd' '0'd'd'd gRd'd'd' Bd'0'dpd dpd'dpIP ')Pd'd'd d'd'd'i'

'dRd'd'd )'d'4'd' 'd')Pd'd )'d'd'd' 'd'd'd'd d'd'd'd' pd'dpd'd i'I'd'd'

'd'dbd'd d'd'dpd' 'd'd'$'d d'd'd'$K 'd'd'd'0 d'd'd'dq 'd'd'd'i d'd'H'd'

Page 7: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

7

2891

Zivko Janevski

Macedonia

H#2 3.1.1.1 6+10

1.Kxc5 Rc8 2.Kb4 c3#

1.Kxe4 Kg3 2.Ke3 Re8#

1.Be5 c4 2.Ke6 Rf6#

Cyclic organized harmony (connection between phases) - I & II = capture of

pinning piece, self-pin and pin-model mates - II - III = Pc2 one-two play - I -

III = Mates by same white piece, Tf8.Pin-mates with self-pin of BLd4 on

three different pin-lines connected all solutions! (author)

The three different pin of the black bishop are the main unifying force of the

three solutions (PE)

892

Emanuel Navon

Holon

H#2 2.1.1.1 6+5

1.Qh1 (Q~?, Qg2?, Qc6?) Sxe3 2.Kf3 Rf6#

1.Bc4 (B~?, Bf1?, Bb5?) dxe3 2.Ke2 Rb2#

Harmonious try play (PE)

2893

Velko Alexandrov

Bulgaria

H#2 b)pc6f5 6+10

a) 1.Kf5 Kxd3 2.d6 Rf8#

b) 1.Ke4 Ke1 2.Bd6 Bb7#

Self-interferences by the black king and a Pickabish (PE)

2894

Evgeni Bourd

Givatayim

H#2.5 2.1.1.1 6+10

1...Ba3 2.Bb5 Bc1 + 3.Rd2 Sd5#

1...Be7 2.Rf4 Bxg5 3.Bc4 + Sxc4#

The black rook is re-pinned twice by the uPinning white bishop. The added

inter-play by the black bishop and white knight is nice (PE)

'd'd'$'d d'dpd'd' 'd'd'd'd 1pGkd')' pd'gRd'd 0nd'd'dK 'dP0'd'd d'd'4'd'

'd'd'd'd I'd'd'd' p$'d'd'd d'd'dNd' 'd'd'd'd d'd'gqd' 'd')bi'd dBd'd'$'

'dBdRd'd d'dpd'db 'dpdqd'd d'd'd'dP 'd'0'ipd g'dpdNd' 'dpI'd'd d'G'd'd'

'd'd'd'd d'd'd'd' pH'dKdB1 d'G')'0' 'd'4'd'd d')bird' 'dndn0'd d'd'd'd'

Page 8: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

8

2895

Menachem Witztum

Tel Aviv

H#2 7+14

b)+re5 on mate position

c)+bc4 on mate position

After mate the twin is putting a new piece between the mating piece and the

king

a) 1.Bg7 bxc4 2.Sxc4 Bxg7#

b) Mating after position (a) +(b)Re5

1.Qb4 fxe5 2.Sxe5 Rxb4#

c) Mating position after position (b) +(b)Bc4

1.Rf6 dxc4 2.Sxc4 Bxf6#

While keeping highly unified solutions, the position enables the “a” solution

to return, in a different way in “c”. The black queen preventing 1…dxc4 in

“a” is very nice (PE)

2896

Roy Erlich

Evgeni Bourd

R. Hasharon/Givatayim

H#2 b)Kg5c5 8+12

a) 1.Rd3 Kf5+ 2.Rd2+ Sbd3#

b) 1.Bd3 Kd4+ 2.Bc2+ Sfd3#

Interesting switchback and self-pin based dual avoidance (PE)

2897

Raffi Ruppin

Rehovot

H#3 2.1.1.. 3+9

1.Rb5 Kd7 2.Rb2+ Kxe6 3.Rd2 Kf5#

1.Kf4 Rf7 2.Kg5 Rf3 3.Kh5 Rg3#

In both solutions the rook, black in one solution and white in the other, reach

its final destination after self-interference with a bishop enabling the king to

move into a required square (PE)

2898

Aleksey Ivunin

Alexandr PaKratiev

Russia

H#3.5 2.1.1.. 3+6

1...Rxf2 2.d3 Bh2+ 3.Kd4 Bd6 4.Ke3 Bc5#

1...Rh2 2.f1=B Rh6 3.Bh3 Rd6 4.Bf5 Bh2#

Echo mate positions (PE)

'd'dbd'G d'dpd'dK 'd'0'd'g d'hph'd' Rdpi')'d dP0P0r0' 'd'd'H'd dqd'd'd'

'd'd'd'd d'd'0qd' p)Rd'h'G 0'd'd'Ip Pd'd'd') d'd'd'd' 'Hb4'H'd gni'drd'

'd'I'd'd drd'$'d' 'd'dpd'0 d'd'd'd' bd'0'd'0 d'd'i'dr 'd'dB0'd d'd'd'd'

'd'd'd'd d'd'd'd' 'dpd'd'd d'd'i'0' 'd'0pd'd d'd'd'd' 'd'd'0Rd I'd'd'G'

Page 9: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

9

2899

Ofer Comay

Tel Aviv

H#3 b) Kb1h4 3+6

a) 1.Qe4 Re3 2.Kd4 Kc2 3.Se5 + Rd3#

b) 1.Qd4 Be3 2.Ke5 Kg4 3.Sd5 + Bf4#

ODT with Umnov cross-checks in the last move (PE)

2900

Jacques Rotenberg

Jerusalem

Ded. To M. Witztum

H#4 3+8

1.Bf1 Bf2 2.Be2+ Be1 3.Bd1 Bd2 4.Bb3+ Bxc1#

The black bishop draws a `W` and the white bishop a `M` for "Witztum

Menahem". Also the shape of the position shows the Hebrew letters "mem"

and "wav" for "Menahem Witztum" (author)

The perfect dedication (PE)

2901

Semion Shifrin

Nesher

H#5.5 2+8

b) Sc2=B at mating position

a) 1...Sxa3 2.Kc5 Sxc2 3.Qa4 Sxe1 4.Sb3+ Kc2! 5.Kb4 Kb1 6.Ka3 Sc2#

b) 1...Bxe4 2.Qa5 Kc2 3.Ka4 Kd3 4.c2 Kc4 5.c1=B Bc2 6.Ba3 Bxb3#

Nice maneuvers of both white and black (PE)

2902

R. Erlich E. Bourd

R. Hasharon/Givatayim

S#4 11+4

1.Sb3! [2.Qa1+ Kc2 3.Sf2+ f5 4.Qb2+ Bxb2#]

1...f5 2.Qe1+ Kc2 3.Sa1+ Bxa1 4.Sb2! Bxb2#

1...fxg5 2.Sf4+ Kc4 3.Sd5+ Bd4 4.Sb4! axb4#

Two entertaining variations ending with zugzwang (PE)

'd'd'd'd d'd'd'd' 'd'd'0'd d'dkd'd' 'dpd'h'd d'dn1'd' 'd'd'd'd dKd'$'G'

'd'd'd'd d'd'd'd' 'd'd'd'd d'd'd'd' '4pd'gqd i'H'0'db 'd'd'd'd d'4'd'GK

'd'd'd'd d'd'd'd' 'd'd'd'd d'dkd'd' 'dNdpd'd 0'0'd'd' qdpd'd'd h'I'h'd'

'd'd'd'g d'd'd'dB 'd')'0'd 0'd'd'G' Pd'd'dRd I'iNd'dR Pd'd'd'd H'dQd'd'

Page 10: Variantim 70 םיטנאירו December 2016 תורעהו םינורתפ ... · 7 2891 Zivko Janevski Macedonia H#2 3.1.1.1 6+10 1.Kxc5 Rc8 2.Kb4 c3# 1.Kxe4 Kg3 2.Ke3 Re8# 1.Be5 c4

10

2903

Semion Shifrin

Nesher

S#4v 9+1

1.Sd6? [2.Sxb5+ Bxb5 3.Rc4+ Bxc4 4.Qc2 bxc2#]

1...Sxd6 2.Bxd6+ Qxc8 3.Rxb3+ Kxb3 4.Qc2 Qxc2#

1...Rg4 2.Sd5+ Sxd5 3.Se4+ Rxe4 4.Qe1 Rxe1# but 1...Sc7!

1.Sb6! [2.Sa4+ bxa4 3.Rc4+ Bxc4 4.Qc2 bxc2#]

1...Sd6 2.Bxd6+ Qxc8 3.Rxb3+ Kxb3 4.Qc2 Qxc2#

1...Rg4 2.Sed5+ Sxd5 3.Rxb3+ Kxb3 4.Qxb2 Qxb2#

Three different mating strategies, of which I especially like the play in the

variation 1…Rg4. It is also interesting how the threat is different but still the

same… (PE)

2904

G. Bakcsi J. Csak

Hungary

Ser-=11 3+9

1.Bxg5 2.Bxf4 3.Bxg3 4.Bxe5 5.Bxc3 6.Bxb4 7.Bxa3 8.Bxc5 9.Bd4

10.d8=Q 11.Qd5 =

After taking all black pawns there’s just a bit of stalemate planning (PE)

2905

Igor Kochulov

Russia

HS#2 2.1.1.1 8+6

SAT Madrasi

1.Bf3! (Bh5? 2.Bf7+Rg4 3.Rd6!) 1...Rc4 2.Bd5+ Rg4#

1.Rg6! (Rh6?) Bc4 2.Rg4+ Be6#

The combination of SAT and Madrasi seem natural in this problem. In both

solutions white needs to be careful not to enable self-interferences that will

cutoff the Madrasi paralysis (PE)

2906

Misha Shapiro

Maale Edomim

HS#2 2.1.1.1 5+5

1.Rfxf4 dxe1=B 2.Rh4 + Bxh4#

1.Raxf4 dxe1=S 2.Rf3 + Sxf3#

Nice separation of the promotions by the different captures on f4 (PE)

'dRdnd'1 dpd'H'4p bd'd'h'd dpG'd'd' '$Nd'd'd dpi'd')' '0'd'!'d dKd'dBd'

'd'G'd'd d'dPd'd' 'd'd'd'd d'0'0'0' '0'd'0'd 0'0kd'0' 'd'd'd'd d'dKd'd'

rd'G'd'H d'd'd'd' '$'d'd'd dPd'gkd' rd'd'd'd I'dPd')n bd'd'd'd d'dBd'd'

'g'd'd'd d'd'd'd' 'd'd'd'd d'd'd'd' Rd'd'0'd d'd'd'dk 'd'0'd') drd'HRdK

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2907

Alberto Armeni

Italy

HS#4 2.1.1.. 8+9

1.b7 f1=S 2.b8=Q Sh2 3.hxg8=R b3 4.Qxh2 + Rxh2#

1.exd7 fxg6 2.d8=Q Bxa2 3.g8=B Kxc3 4.Qd2 + Kxd2#

Two different strategies mixing together all four promotions (PE)

2908

Semion Shifrin

Nesher

HS#3 b)f4f7 3+6

AnnanChess Take&MakeChess

Leo q Vao b Pao Rr

a) 1.Rbb5 Qb4 2.Kxf4-c7 Re5 3.Kxc8-a6 + Rxa5-a4#

b) 1.Ra6 Qb7 2.Kxe2-e7 Bxa6-a4 + 3.Kxf7-a2 + Kc1#

In both solutions the kings give Annan-checks and mates (PE)

2909

Raffi Ruppin

Rehovot

#2 AntiCirce Calvet 9+7

b) Isardam

a) 1.Rh4+? Ba1! 1.Bg3+ Rc1+!

1.f8=S! 2.Sg6#

1...Bxf8(a) 2.Rh4(A)#

1...Rxf8(Rh8)(b) 2.Bg3(B)#

b) 1.Rh4+? Rc4! 1.Bg3+? Be5!

1.f8=S! 2.Sg6#

1...Bxf8(a) 2.Bg3(B)#

1...Rxf8(b) 2.Rh4(A)#

Entertaining reciprocal changes taking advantage of the different

characteristics of the two conditions (PE)

2910

Sébastien Luce

France

H==4 Circe 3+2

b)Pa7g7

Neutral locust Q

a) 1.Rh5 Kd6 2.Rd5 + Kc6 3.Rb5 + Qxb5-b4[+bRa8] 4.0-0-0 a8=Q ==

b) 1.Kd8 Ke5 2.Rh5 + Kd6 3.Rd5 +Qxd5-e4[+bRa8] 4.Rc8 g8=Q ==

Chamaleon-echo, and a nice way to exchange the place of the black king and

rook in the final positions (PE)

'd'd'dbI d'dpdp)P ')'dPdPd d'd'd'd' '0'd'd'd 0'H'd'd' Ni'd'0'd g'd'd'dr

'dbd'd'd d'd'd'd' 'd'd'd'd $'d'd'd' '$'dqg'd i'd'dKd' 'dndrd'd d'd'd'd'

'drd'd'd d'dP0Pg' 'd'dPd'd d'd'dpHB 'd'd'i'd d'd'0NdR 'd'dpd'd d'd'G'dK

'd'dkd'4 )Qd'd'd' 'd'dKd'd d'd'd'd' 'd'd'd'd d'd'd'd' 'd'd'd'd d'd'd'd'

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2911

Ofer Comay

Tel Aviv

HS#3 4+12

b) kh3c1

a) 1.Qxb7 Sd6 2.c8=B Bb6 3.Qf3 + Sxf3#

b) 1.Qxd8 Sb5 2.c8=R Re7 3.Qd2 + Sxd2#

Harmonious solutions with Zilahi, pins, battery formation and minor

promotions (PE)

2912

Michael Grushko

Kiryat Bialik

Ded. To Paz Einat 60

HS#4 KoBulKings 1+2+1

CouscousCirce EinsteinChess

b) bSc6c2 c) Circe Parrain

EinsteinChess KobulKings

d) c+ bSc6c2 HS#3

Neutral king K

a) 1.Kf1xg1[g1=rB][+bBc1]+ rBg1-f2=S 2.Rh1xc1=Q[f2=rB][+bBd1]

Bd1-b3=S 3.rBf2-b6=S rNb6-a4=P 4.Qc1xc6[a4=rS][+bSd1]+ rNa4-

b2=P #

b) 1.Rh1xg1=Q[f1=rB][+bBd1] + rBf1-h3=S 2.Qg1-e1=R Bd1-h5=S

3.Re1-e3=B Sh5-g3=P 4.rNh3-g1=P + Sc2xe3=B[g1=rB][+wBf8] #

c) 1.Kf1-e1 Ke1-e2 2.Rh1xg1=Q[e2=rB] rBe2-a6=S[+bBc5]

3.Qg1xc5[a6=rB] rBa6-b7=S[+bBd6] 4.Qc5-b5=R + rNb7-d8=P #

d) 1.Rh1xg1=Q[f1=rB] + rBf1-a6=S[+bBb6] 2.Qg1-g7=R Bb6-a7=S

3.Rg7xa7=Q + rNa6-b4=P[+bSb5] #

Many thanks for the dedication!! Changing CouscousCirce to Circe Parrain

drives different ways to integrate the EinsteinChess and KobulKings

conditions. I especially like the mate positions in which the royal pawn is pre-

blocked (PE)

2913

Hubert Gockel

Eugene Rosner

Germany/USA

Ded. to the memory of

Theodor Tauber

#2 13+7

a) AntipodeanCirce

b) SymmetryCirce

a) 1.c7! zz

1...Rxh8[wBh8-d4] a 2.Sb6# A

1...gxh6[wPh6-d2] b 2.Rd4# B

1...Bxg2[wSg2-c6] c 2.Rb4# C

b) 1.Rb1! zz

1...Rxh8[wBh8-a1] a 2.Rd4# B

1...gxh6[wPh6-a3] b 2.Rb4# C

1...Bxg2[wSg2-b7] c 2.Sb6# A

A lovely Lacny using well the different rebirth squares of the two conditions.

The different keys is a nice touch (PE)

'dQg'd'd dr)'d'd' 'd'd'0'd d'd'd'd' 'd'hn)p0 d'0'I'dk 'd'dpd'4 dbd'd'd'

'd'd'd'd d'd'd'd' 'dnd'd'd d'd'd'd' 'd'd'd'd d'd'd'd' 'd'd'd'd d'd'dKgR

'dKd'grG d'dN0'0' 'dPdP0P) )'d'dBd' 'dkd'd'd d'dR)'d' '$'d'dNd d'd'd'db

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2914

Michael Grushko

Kiryat Bialik

Ser-H#7 0+1+3

ParrainCirce PhantomChess

EinsteinChess

b) PWC PhantomChess

EinsteinChess Pf5f6 Neutral pawns P

a) 1.Pxf5=N 2.Ke8-d7[+Pe4] 3.Nxe3=B 4.Kd7-e8[+Pf4] 5.Bxf4=R

6.Pe4-e7-e6[+Pf6] 7.Rxf6=Q Pe6-e7[+Pf7] #

b) 1.Pf6-fxe6=N[+Pf6] 2.Ne6-g7=P 3.Pe3-e7-e6 4.Pf6-fxe6=N[+Pf6]

5.Nxg7=B[+Pe6] 6.Bxf6=R[+Pg7] 7.Ke7 Rxe6=Q[+Pf6] #

Neutral queens appear in the final mating positions, but the neutral pawns are

the real “heroes” (PE)

'd'dkd'd d'd'd'd' 'd'dPd'd d'd'dPd' 'd'd'd'd d'd')'d' 'd'd'd'd d'd'd'd'