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KoBulChess Помощни матове в 2 хода 2017 Класиране
logo(29.04.2018) Тук е класирането на KoBulChess в раздел Помощни матове в 2 хода за 2017. Благодарност към Karol Mlynka за неговата бърза и отлична работа! Класирането е отворено за контестации за срок от 1 месец.
 
 
 
 
 
 
In the section helpmates twomovers of KoBulChess Informal Tourney for 2017 on the website http://kobulchess.com/ participated 18 entries (plus several versions also from other authors in comments): 810, 821, 822, 823, 824, 825, 831, 833, 834, 835, 839, 840, 841, 859, 860, 864, 866, 870(22 composers from 12 countries). The general level of the competition was high, above all, the top compositions honored in the tournament. All problems were computer tested (C+).
I would like to express my thanks to the website’s editor Seetharaman Kalyan for inviting me to judge this helpmate tourney, which was a pleasant job to do.
 
 
h171
 
1.Qb7 Sxe6 2.Rd4 Sef4#
1.Rh4 Sxf6 2.Qe4 Sfd5#
1.Rxf4 Rd7 2.Re4 Bxf6#
1.Qxd5 Bh6 2.Qd4 Rxe6#
 
TF-helpmate in 2+2 phases. In the first pair: unguards of the mating squares (B1), white line-openings for black self-block (Klasinc theme) with capture of black pinned unit by a battery creation and pinmates with shut-off switchback. In the second pair: Zilahi on the mating squares from W2and self-blocks on the exchanged squares and capture of unpinned black unit in mate on the same squares as in the other pair on W1 – that all after homogeneous keys by a good construction. (This beautiful HOTF-composition exists not only because of experts' criticism by 859.)
Compare to 859 and CE1!
 
 
 h172
 
1.Bxc7+ Kxc7(Kc5?) 2.Bb5 Rd2#
1.Bxd7 Kxd7(Kd5?) 2.Ba5 Qh2#
 
An excellent sacrifice Zilahi with gate-opening and a choice of white king?s moves by line-opening. Reciprocal functions of the black half-battery front pieces: each bishop either captures the white unit or plays a hideaway move.
  • Thanks to Internet communication, it was possible to achieve a significantly improved (more economical) joint version of the original composition within a reasonable time horizon.
  • See versions and commentson:
 
 
 
h17sp 
 
1.Re7 d4 B 2.Re4 Sc7# C (Be8 = A)
1.Re6 Bb5 B 2.Be4 dxc4# C (Sa6 = A)
1.Rc6 Sb8 B 2.Rc5 Bxf7# C (Pd3 = A)
 
Cyclic changed functions of white pieces Be8, Pd3 and Sa6:
A = passive flight control,
B = active flight control,
C = mating unit.
In this way, the composer has reached a closed3-point 3-part cycle (ABC-CAB-BCA).
All phases with self-blocks in the new Meredith version. A totally unconventional modus operandi for author's creation in this genre.
See the initial position: +bBh8, wPe3?c3 (Devil?s Meredith)
Compare to CE3!
 
 
 h171hm
 
1.Sa8 Rc3+ 2.Kd4 Rd7#
1.Se7 Bc3 2.Kc4 Qa6#
 
Creation of a white battery on the same square (white Grimshaw) with self-pin by black knights hideaways and pin-mates after anti-cipatory opening of two masked lines. Diagonal/orthogonal cor-respondence.
18 responses on:
 
 

 h172hm

 
1.d3 Sf6+ 2.Be4 Qc1#
1.Qd7 Sb5 2.Sf5 Sed6#
 
A well done blend of Goethart & Gamage interference unpins.
9 comments: (WRh6 as a weakness point?)
“Technically superfluous units can be vital if looked at from the thematic point of view...“ (after Uri Avner in comment #2)
Transfer of a theme to another genre requires comprehending the essence of both the theme and the genre.“ (comment #3 by N. Predrag) 
 
 
 
h17shm
 
1-2.Qxe4 a Sge6+? A 3.Qxe6,
1-2.Qe5 b Bxc5+? B 3.Qxc5,
1-2.Qc3 c dxe3+? C 3.Qxe3;
 
1.Qe8 Sf7! (controlling e5) 2.Qxe4 a Bxc5# B
1.cxb4 Bxb4! (controlling c3) 2.Qe5 b dxe3# C
1.Qxb4 d3! (controlling e4) 2.Qc3 c Sge6# A
 
Cyclic flight control and self-block by cyclic dual avoidance. All 8 white pawns can be seen in a helpmate only rarely. It should be emphasized that the author is a successful originator.
Compare to CE3! 
 
 
h17c1 
 
a) 1.Bd4 e5 2.Bc6 Bd6#
b) 1.Rd4 Bd3 2.Rc6 Rb5#
 
An ingeniously constructed Meredith with double black Grimshaw by self-blocks and critical B1 moves. However, their basic motivation has a different content in the same form: 1.Rd4 shows a help effect of anticipatory interference unpin of white unit (without unguard) while 1.Bd4 only interfered for the unguard of the mating square (without unpin).
(Note: There were no forerunners reported in the comments and the judge also found no anticipated problems.)
2 comments:

 

 h17sc
 
1.c1=S Qxa4 2.Sa2 Qd7#
1.c1=R Qxb4 2.Rc3 Qe7#
1.c1=B Qxd5 2.Bg5 Qd7#
 
Very harmonious processing of unified strategic content. Complex blend of 3-fold change of black underpromotions (B1), direct self-pins (W1)and interference unpins by a promoted unit (B2) –  but in rather heavy position and unfortunately with one repeated mate. The aesthetic and economic criteria had to retreat from the main idea of the composition.  
4 comments:
 
 
ce1
 
ce2
 
ce3
 
The award remains open for 1 month period: please address any claims to the editor.
 
Bratislava, February 2018       Karol Mlynka, International Judge of the FIDE
 
karol.mlynka
 

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