12. svetová súťaž – vypísanie a témy

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12. WCCT: A – #2

Tému navrhla krajina: Srbsko
Rozhodcovské krajiny: Česko, Francúzsko, Gruzínsko, India, Slovensko
Náhradník: USA

TÉMAA
Slovensky:
Dvojitá korekcia matu s riešením a tematickou zvodnosťou začínajúcimi ťahmi rôznych bielych kameňov.
Dvojitá korekcia matu (DMC) je nová tematická kombinácia, ktorá zahŕňa zámenu matov (aspoň 3×1) a zámenu obrán (aspoň 3×1) v zdanlivej hre, zvodnosti (alebo zvodnostiach) a riešení:

a b c
set X ~ ~
try A X ~
solution B ~ X

Prázdne polia so znakom „~“ po čiernych ťahoch b/c môžu byť:
1) akýkoľvek mat okrem X (v ktorejkoľvek fáze), okrem A v zvodnosti a okrem B v riešení;
2) žiadny mat (buď čierne ťahy b/c nebránia hrozbe, alebo vyvracajú zvodnosť).
Žiaden tematický variant by sa nemal opakovať medzi fázami, aj keď konkrétny čierny ťah v zvodnosti alebo riešení nebráni hrozbe. Inými slovami, žiaden tematický variant (obrana + mat) by nemala fungovať v inej tematickej fáze.
Rôzne formy DMC možno nájsť vo vypísaní turnaja Jurmala IT 2024
(https://wccc2024.wfcc.ch/wp-content/uploads/2024/05/Jurmala-WCCC-2024-Internet-Tourney.pdf)
a vo výsledku toho istého turnaja
(https://wccc2024.wfcc.ch/wp-content/uploads/2024/08/Jurmala-IT-2024-Award.pdf).
Tieto dva dokumenty obsahujú ďalších 34 príkladov DMC, ktoré nie sú tematické pre 12. WCCT iba preto, že riešenie a tematické zvodnosti začínajú ťahmi toho istého bieleho kameňa.

Anglicky:
Double Mate Correction with the solution and the thematic try starting by moves of different white pieces.
Double Mate Correction (DMC) is a new thematic combination, involving changed mates (at least 3×1) and changed defenses (at least 3×1) in set-play, try (or tries), and solution:

a b c
set X ~ ~
try A X ~
solution B ~ X

The empty squares with the sign “~” after black moves b/c may be:
1) any mate other than X (in any phase), other than A in the try, and other than B in the solution;
2) no mate (either black moves b/c don’t prevent the threat or they refute the try).
No thematic variation should repeat between the phases, even if the concrete black move doesn’t defend against the threat in the try or solution. In other words, no thematic variation (defence+mate) should work in another thematic phase.
Different DMC forms may be found in the Jurmala IT 2024 Announcement
(https://wccc2024.wfcc.ch/wp-content/uploads/2024/05/Jurmala-WCCC-2024-Internet-Tourney.pdf)
and in the award of the same tourney
(https://wccc2024.wfcc.ch/wp-content/uploads/2024/08/Jurmala-IT-2024 Award.pdf).
These two documents include 34 more DMC examples that are not thematic for 12th WCCT only because the solution and the thematic try start by moves of the same white piece.

 


PRÍKLADYA

Semen Veselenchuk
1st Prize
Nauka i suspilstvo 1971-72
white Kd6 Qf7 Rc3h4 Bf3 Sh8 black Kg5 Pf5g4
1...f5-f4 2.Rh4-h5 # 1...g4-g3 2.Qf7-e7 # 1...g4*f3 2.Qf7-e7 # 1...Kg5-f4 2.Rh4*g4 # 1.Sh8-g6 ? zugzwang. 1...f5-f4 2.Rc3-c5 # 1...g4-g3 2.Rh4-h5 # but 1...g4*f3 ! 1.Bf3*g4 ! zugzwang. 1...f5-f4 2.Qf7-e7 # 1...f5*g4 2.Rh4-h5 # 1...Kg5-f4 2.Qf7*f5 # 1...Kg5*h4 2.Qf7-h5 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.023 s}
[P-A01]
#2 (6+3)

Miroslav Svitek
Pravda, 1982
white Kc3 Qc8 Rd4 Bg3 Se3 Pb7c5e6 black Ke5 Qh7 Rf5g7 Bg8h8 Sf4h6 Pc6f7g4g5g6
1...f7-f6 2.Se3-c4 # 1...Rf5-f6 2.b7-b8=Q # 1.e6-e7 ? zugzwang. 1...f7-f6 2.b7-b8=Q # 1...Rf5-f6 2.Se3-c4 # but 1...Ke5-f6 ! 1.Qc8-d8 ! zugzwang. 1...f7-f6{(K:e6, Vf6)} 2.Qd8-d6 # 1...f7*e6 2.Se3-c4 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.015 s}
[P-A02]
#2 (8+13)

Visvaldis Veders
Europe Échecs, 1995
white Kg6 Qb5 Rg5 Bb3e3 Sc8 Pc3d3d7 black Ke5 Qh2 Re7 Bb4 Sf5g3 Pc5c7d2e6g7h4
1...Sg3-e4 2.d3-d4 # 1.Rg5-g4 ? threat: 2.Be3-f4 # 1...Sg3-e4 {(Jg3~)} 2.Rg4*e4 # 1...Sf5*e3 2.d3-d4 # 1...Qh2-f2! 1.Qb5-c6 ! threat: 2.Qc6*c7 # 1...Sg3-e4 2.Qc6*e4 # 1...c5-c4 2.d3-d4 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.015 s}
[P-A03]
#2 (9+12)

Visvaldis Veders
The Problemist, 1995
white Qa8 Sd7 Sg7 Kh6 Bh5 Rg4 Rb3 Pe3 Pd2 Pe2 Bf2 black Be8 Pe6 Sg6 Rb5 Pc5 Sd5 Ke4 Rf4 Pd3 Bg3
1...Sg6-e5 2.Sd7-f6 # 1.Rg4-g5 ? threat: 2.e2*d3 # 1...Sg6-e5 2.Rg5*e5 # 1...Rf4-g4 2.Sd7-f6 # but 1...c5-c4 ! 1.Qa8-a1 ! threat: 2.Qa1-h1 # 1...Sg6-e5 2.Qa1*e5 # 1...Sg6-h4 2.Qa1-e5 # 1...Sd5*e3 2.Sd7-f6 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.015 s}
[P-A04]
#2 (11+10)

Visvaldis Veders
Probleemblad 1995
white Kc7 Qb5 Rg5 Sb4e8 Pc4c3d3 Bc8e3 black Ke5 Pb7b6g6f3 Bc5g8 Sf5 Sd2 Qc1
1...Sd2-e4 2.d3-d4 # 1.Rg5-g4 ? threat: 2.Be3-f4 # 1...Sd2-e4 {(Jd2~)} 2.Rg4*e4 # 1...Sf5*e3 2.d3-d4 # 1...g6-g5! 1...Qc1*c3! 1.Qb5-c6 ! threat: 2.Qc6-f6 # 1...Sd2-e4 2.Qc6*e4 # 1...Bc5-e7 2.d3-d4 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.023 s}
[P-A05]
#2 (10+10)
(unintented double refutation of the try could be avoided, f.i. +bPc2)

Janis Lukasevics
Sächsishe Zeitung 1997
white Sc8 Kf7 Qc6 Rd4 Re3 Pg3 Bb2 Se2 Bh1 black Ba8 Bb8 Re8 Sf8 Pd7 Pd6 Pe6 Pg6 Pb5 Kf5 Pg5 Qa4 Pg4 Rf1
1...e6-e5 2.Bh1-e4 # 1.Rd4*d6 ? threat: 2.Re3-e5 # 1...e6-e5 2.Rd6-f6 # 1...Qa4-e4 2.Bh1*e4 # 1...Qa4-f4 ! 1.Qc6*d6 ! threat: 2.Re3-e5 # 1...e6-e5 2.Qd6-f6 # 1...Ba8-e4 2.Bh1*e4 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.031 s}
[P-A06]
#2 (9+14)

Alex Casa
1st Prize
StrateGems 2004
white Pc6 Sb5 Qh5 Rc4 Rg4 Bh4 Kb3 Se2 black Ra7 Pc7 Ph7 Ke6 Pd4 Qe4 Pf4 Pa3 Pd3 Pf3
1...Qe4-d5 2.Se2*f4 # 1.Rc4*d4 ? threat: 2.Rd4*e4 # 1...Qe4-d5 + {(Dh6, D:e2, De3)} 2.Qh5*d5 # 1...Qe4-f5 2.Qh5-e8 # 1...Qe4*d4 2.Se2*d4 # {display-departure-file} 1...Qe4-e5 ! 1.Rg4*f4 ! threat: 2.Rf4*e4 # 1...Qe4-d5 2.Qh5-e8 # 1...Qe4*f4 2.Se2*f4 # 1...Qe4-g6 2.Se2*d4 # {display-departure-file} 1...Qe4*c6 {(Df5, D:e2, De3)} 2.Qh5-f5 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.023 s}
[P-A07]
#2 (8+10)
Non-thematic (for WCCT-12) tries: 1.Rc5? Ra8! & 1.Rg7? Qf5!

Evgeny Bogdanov
1st Prize
Pod Wieza 2005
white Se7 Kg7 Re6 Bb4 Sa3 Rd2 Qf2 Bf1 black Pb7 Pa6 Pf5 Bh5 Kd4 Pe4 Pg4 Pd3 Se3 Rh3 Sb2
1...Sb2-c4 2.Sa3-c2 # 1.Rd2-c2 ? threat: 2.Bb4-c5 # 1...Sb2-c4 {(Ja4)} 2.Rc2*c4 # 1...d3*c2 2.Sa3*c2 # 1...b7-b6 ! 1.Qf2-f4 ! threat: 2.Qf4-e5 # 1...Sb2-c4 {display-departure-file} 2.Rd2*d3 # 1...Se3-c4 {display-departure-file} 2.Sa3-c2 # 1...Se3-c2 {(Je~)} 2.Re6-d6 # 1...Se3-d5 2.Se7*f5 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.015 s}
[P-A08]
#2 (8+11)

Marjan Kovačević
1st-2nd Prize
“64” 2024
white Kf8 Bc7 Qc6 Rc5 Se5 Pb2 Sd2 Bd1 black Pa6 Kb4 Pc2 Be2 Pf2 Ra1 Se1 Qf1
1...Se1-d3 2.Rc5-c4 # 1...Ra1-a5 2.Bc7*a5 # 1.Bc7-d6 ? threat: 2.Rc5-d5 # 1...Se1-d3 2.Qc6-e4 # 1...Ra1-a5 2.Rc5-c4 # 1...c2-c1=Q {(c1V)} 2.Rc5-b5 # 1...Be2-b5 ! 1.Qc6-d6 ! threat: 2.Rc5-a5 # 1...Se1-d3 2.Qd6-d4 # 1...Be2-b5 2.Rc5-c4 # 1...c2-c1=Q {(c1V)} 2.Se5-c6 # {Popeye FreeBSD-11.2-RELEASE-amd64-64Bit v4.83 (1024 MB) / 0.023 s}
[P-A09]
#2 (8+8)


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