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A  Twomovers  B  Threemovers  C  Moremovers  D Studies  E  Helpmates  F  Selfmates  G  Fairies
Judges: Croatia, Great Britain, Russia, Serbia & Montenegro, Slovakia
Reserve judge: Belarus
A synthesis of black correction and change of function of white moves is
required as follows:
In the actual solution, a random and at least one correction move by the same
black piece are answered by white mating moves. These white moves must appear
as first move(s) and/or threat(s) in at least one try.
Examples (thematic moves in bold):
(1) V. Rudenko, A. Slesarenko
1 Pr Melnichenko65 2004 


1…Bxe5 2.Sd6# 1.Qc4? thr. 2.Sac3(A), Sbc3(B)# 1.Qh3! thr. 2.Qxf3# 
(2) V. Pilchenko, V.Shavyrin
1 Pr Kirillov JT 2001 

#2 (9+9) 
1.Sxc3? thr. 2.e5(A)# 1.Bxc3? thr. 2.Se5(B)# 1.Qc6! thr. 2.Qd5# 
(3) A. Slesarenko
3 HM Zvon Chernobylja 1992 

#2 (10+8) 
1.Qc3? thr. 2.Rxf5(A)# 1.Qc4? thr. 2.Sg6(B)# 1.Qg1! thr. 2.Qg3# Additional content (non thematic): two transferred mates. 
(4) A. Slesarenko
Scheme 

#2 (12+9) 
1.Bd6(A)? thr. 2.Qxe5# 1.Bc5(B)? thr. 2.Rxd4# 1.cxb7! thr. 2.Qc6# 
(5) A. Slesarenko
Original 

#2 (10+10) 
1.f5(A)? thr. 2.Rc1(B)# 1.Qc6! thr. 2.Sc2# Additional content (non thematic): change 
Judges: Israel, Russia, Serbia & Montenegro, Sweden, Ukraine
Reserve judge: Netherlands
On the 2nd move a white piece makes a nonchecking move pinning a black piece which has just made a move to the square on which it is then pinned. The pinning must be direct, i.e. created by the move of the pinning piece itself. At least 2 variations are required.
Example:
M. Marandyuk, V. Samilo
4 Pr 64Shakhmatnoye Obozreniye 1985 

#3 (10+11) 
1.Ra3! threat 2.Bxb5+ Kxb5 3.Qe2# 1... Qxd5 2.Be6! 2... Rxd4 3.Qc7# (2... Qxe6 3.Qc5#) 1... Rxd4 2.Rf4! 2... Qxd5 3.Qe2# (2... Rxf4 3.Rc3#) (1... Re4 2.Qc7+ Kxd4 3.Rd2#, 2... Kxd5 3.Qc5#) 
Judges: Netherlands, Russia, Sweden, Switzerland, Ukraine
Reserve judge: France
Mate in 4 moves is required, where in the actual solution there are at
least 2 variations showing switchback of a white piece either to the square
it occupied in the diagram position or to a square it previously visited in
the course of the solution.
The key is allowed as part of the switchback mechanism (example 2). The threat
may be one of the thematic variations (examples 1 and 2).
A Rundlauf instead of a simple switchback is permitted (i.e., the thematic
piece may return to its departure square by a different route).
Examples:
(1) Lars Larsen
Suomen Shakki 1993 

#4 (6+15) 
1.Bd3! threat 2.Qc4+ Kc6 3.Se5+ Qxe5 4.Qb5# 1…Sf3 2.Bc4+ Ke4 3.Rf4+ Qxf4 4.Bd3# 1…Sa5 2.Sf4+ Ke5 3.Qxc5+ Qxc5 4.Sg6# 
(2) Friedrich Chlubna
3 Pr Schach Report 1994 

#4 (7+8) 
1.Kb7! threat: 2.Bd3+ Kd5 3.e4+ B/fxe4 4.Bc4# 1...f4 2.Kc8 (3.Sg5+ Kd4 4.S7e6#) 2...f3 3.e3 (4.Sg5#) 3...Bxe3 4.d3# 
(3) Mikhail Marandyuk
2 Pr= Uralsky Problemist 2000 

#4 (11+11) 
1.d3! threat: 2.Sd4+ Kc5 3.Sxe6+ Kc6 4.Rb6# 1...Rxd3 2.Rb6+ Kc7 3.Bf4+ Sxf4 4.Rb7# (3...e5 4.Bxe5#) 1...Rf6/Rf7 2.Sba5+ Kc5 3.Be3+ Sxe3 4.Sb3# 1...Be5 2.Sca5+ Kd6 3.Be7+ Sxe7 4.Sc4# (1...e5 2.Be7 threat: 3.S~a5# 2...Bc7 3.Sxe5+ Bxe5 4.Sa5#) 
(4) Uri Avner 3 Pr Canadian Chess Chat 1980 

#4 (10+11) 
1.Bxg3+? Kxe3 2.Bf4+ Ke4 3.Sf2+ Bxf2! 1.Ba2! threat: 2.Bg5+ Kxe5 3.Qf4+ Ke6 4.c5# 
Judges: Belarus, Finland, Georgia, Israel, Romania
Reserve judge: Belgium
In a position in the main line of a win or draw study where an unprotected white or black piece A is directly attacked, White or Black instantaneously (right on the following move) places another piece B (of the same colour as A) enprise (again unprotected and directly attacked). This thematic move resulting in the two white or the two black pieces A & B hanging, must be a quiet one, i.e. not a check, nor a capture. A and B may be any pieces except pawns.
Note: in example 4, the move 4.Rb8 is not thematic. Even though two white pieces are enprise, the required proximity in time for this occurrence is missing. Only 2.Rd6 is thematic.
Examples:
(1) G. Kasparian
1 Pr Magyar Sakkelet 1969 

Draw (4+2) 
1. Kg4! Qc8+ 2.Kf3!! (2.Kh4 Qf8!) Qb7+ 3. Rd5!! (thematic!) Q:b1 4.Ra5+ Kb7 5.Rb5+ Draw. 
(2) Y. Afek
3 com Schakend Nederland 1978 

Draw (5+5) 
1. Se5! (1.Sd6? Bc7 2.Kg2 Rf8 3.Rh1+ Ke2 4.Se4 Rg8+) 1…Bc7 2. Rh1!! (thematic!) 2…R:h1 3.Kg2 Rf1 4.Sd3+ Ke2 5.Sc1+! Ke1 6.Sd3+ Ke2 7.Sc1+ Draw. 
(3) Y. Afek
3 Pr Hildebrand80 2002 

Draw (5+5) 
1. B:e6! (1.b7? Sg4 +) 1…Sg4!! (thematic!) 2. B:g4+ Ke1! 3. Bc8!! (3.B:h3? Kf1 4.b7 B:b7 +) 3…Kf1 4.Ba6+ Kf2 5.Bb7! Kf1 6.Ba6+ Ke1 7.Bc8! Ke2 8.Ba6+ Kf2 9.Bb7! Draw. 
(4) P. Sobolevski
Pr Shachmati v SSSR 1951 

Win (5+5) 
1.Bb2+ Be5 2.Rd6! (thematic!) Rb5 3.Rd8+ Kg7 4.Rb8! (non thematic!) Rd5 5.e4! wins. 
Judges: Czech Republic, France, Greece, Italy, Macedonia
Reserve judge: Bulgaria
Helpmate in 3 moves. The white mating piece arrives (on the mating move)
on a square that has been vacated by a black piece during the play.
Multisolutions and all kinds of twinning are allowed, but not Zeroposition
settings.
Restrictions:
Examples:
(1) Živko Janevski
Orbit 2000 

h#3 2 solutions (4+11) 
1.Kd6 b5 2.Kd7 Rxd3+ 3.Rd6 Bc6# 1.Ke4 Kg1 2.Kf3 Bxc6+ 3.Be4 Rd3# 
(2) Markus Ott
1 Pr SchachAktiv 1993 

h#3 2 solutions (4+7) 
1.Ba4!! Sf2 2.Ke3 b3! 3.Sf3 Sd1# 1.Ra4!! Sf5 2.Ke2 b4! 3.Rf1 Sd4# 
Judges: Bulgaria, Israel, Macedonia, Poland, Ukraine
Reserve judge: Sweden
A S#3 is required, where two pieces  a white piece 'A' and a white or
black piece 'B' (B being a linepiece)  occupy (either in the initial position
or at a later stage, not necessarily at the same time) squares on the same line
'x'. Black's 1st and 2nd moves are made by the same piece 'C' which first captures
'A' and then withdraws, freeing line 'x' for 'B' for any purpose: movement,
control, pin, check, mate, dual avoidance etc.
There is one restriction: unacceptable as a thematic variation is the creation
of a direct black battery with 'B' as the rear piece and another piece 'D' as
the front piece, to fire and mate on the 3rd move.
Examples (taken from: "Passive Annihilation in Selfmates" by Petko A. Petkov, StrateGems 27):
(1) Waldemar Tura
1 Pr Szachy 1987 

S#3 (15+9) 
1.Sa4! (2.Se6+ Kd5 3.Sc3+ Bxc3#) 1…Qxe5 2.Sd5+! Qf4 3.Sac3+ Bxc3# (2.Sh3+?, 2.Sh5+?), 1…gxf5 2.Sh3+! fxg4 3.Sf2+ Bxf2# (2.Sd5+?, 2.Sh5+?) 1…Sxg2 2.Sh5+! Sf4 3.Sg3+ Bxg3# (2.Sh3+?, 2.Sd5+?). Black captures three white Pawns (Pe5, Pf5, Pg2) and opens three white lines with dual avoidance. 
(2) Vladimir Zabunov
1 Pr Shach. Misal 1978 

S#3 (13+7) 
1.Ba1! (2.Rb2+ Kxe5 3.Rb4+ Bd4#), 1…Sxd6 2.Rb6+ Sc4 3.c7+ Bxb6#, 1…Sxe5 2.Re3+ Sc4 3.Bf3+ Bxe3#. Two white Pannihilations with clearance of two lines, play by the white R/Q battery and creation (with white Rook as rear battery piece) of new white P/R and B/R batteries. 
(3) Milan R. Vukcevich
3 Pr StrateGems 2001 

S#3 (12+12) 
1.Red8! (2.Sb3+ cxb3 3.Sb5+ Bxb5#), 1…Se6~ 2.Qe2 and 3.Qxc4+ Bxc4#, 1…Sxc7!? 2.S5e6+ Sxe6 3.Rxc4+ Bxc4#, 1…Sxc5!? 2.S7e6+ Sxe6 3.Rxc4+ Bxc4#, 1…Sxf4!? 2.Be4+ Sd5 3.Bxh6 B~#. Black Knight correction with three secondary defences as annihilationcaptures on c7, c5 and f4. Umnov theme after captures by the Knight, Knightpinning with Zugzwang after 1…Sxf4. 
(4) Michael Herzberg
1 Pr E. Rochada 8889 

S#3* (11+14) 
*1…Rxd4[a] 2.Sc3+[A] Bxc3 3.Bf5+ Rxf5# (2.Sd6+?), 1…Bxd4[b] 2.Sd6+[B] Rxd6 3.Bf5+ Rxf5# (2.Sc3+?); 1.Qb6! (2.Bf5+ Kd5 3.Se3+ Rxe3#), 1…Rxd4[a] 2.Sd6+[B] Rxd6 3.Qe3+ Rxe3# (2.Sc3+?), 1…Bxd4[b] 2.Sc3+[A] Bxc3 3.Qe3+ Rxe3# (2.Sd6+?). Black selfblocks on d4 in the set and Pawn annihilation in the solution. Reciprocal change with dual avoidance, a strategy which is familiar from the orthodox threemover. 
(5) Waldemar Tura
2 Pr Boletim UBP 1985 

S#3 (7+12) 
1.Bd4! (2.Qxe6+ Kxd4 3.Qe3+ Rxe3#), 1…Qxg2 2.Sxe6+! Qg4 3.Qf3+ Rxf3# (2.Sh5+? Qg4 3.Sg3+ Rxg3!), 1…Rxg2 2.Sh5+! Rg4 3.Sg3+ Rbxg3# (2.Sxe6+? Rg4 3.Qf3+ Qxf3!). (1…f1S 2.Sxe6+ Bxh4 3.Qf3+ Rxf3#, 1…e5 2.Sxd5+ Kxd5 3.Se3+ Rxe3#). Dual avoidance, combined with mutual line clearance and selfpins. 
(6) György Bakcsi
Die Schwalbe 1983 

S#3 (14+10) 
1.g8S! (2.Sg7+ Kxe4 3.Qe3+ Rxe3#), 1…Kxe4 2.Sc5+! Kd4 3.Bxf6+ Re5#; 2…Kf5 3.Se7+ Rxe7#, 1…Kxe6 2.Sc5+! Kd6 3.Be7+ Rxe7#; 2...Kf5 3.Se7+ Rxe7#, (1…fxe6 2.Se7+ Kxe4 3.Qe3+ Rxe3#). Annihilation by the black King. 
(7) Petko A. Petkov
ANDA 2003 

S#3 (11+10) 
1.Ra5! (2.Bf5+ Kxd5 3.Qe4+ Bxe4#), 1…Sc5~ 2.Qa6+! ~ 3.Bf5+ Bxf5#, 1…Sxe4! 2.Rd6+ Sxd6 3.Qg6+ Bxg6#, 1…Sxd3! 2.Sf4+ Sxf4 3.Bf5+ Bxf5#. Knight correction, white lineopening after 1…Sxe4, black lineopening after 1…Sxd3 and ambush key. 
Judges: Bulgaria, France, Japan, Slovakia, Switzerland
Reserve judge: Slovenia
Required are Anticirce direct #2 problems showing "clash of rebirth".
A clash of rebirth may occur in the following situation:
The same square is a rebirth square for two pieces of different colours. Through
the rebirth of one of these pieces a capture by the other piece becomes illegal,
or a check is no longer effective.
The following are the permitted groups of pieces. Only one of these groups can
be exploited, and at least one piecetype belonging to the selected group must
be used.
Group 1: Grasshopper, Nightrider
Group 2: Grasshopper, Rookhopper, Bishophopper
Group 3: Lion, RookLion, BishopLion
Group 4: Leo, Pao, Vao
Both Calvet and Cheylan Anticirce types are permitted.
Anticirce (definition): on making a capture, any unit (including K) is reborn on its gamearray square, as determined according to Circe rules, i.e. R, B and S are reborn on the square of the same colour as the capturesquare, pawns on the file of the capture; fairy pieces are reborn on the promotionsquare on the file where the capture is made. The capture is legal only if the rebirthsquare is vacant. A capture may be made from a rebirthsquare. The unit that is captured is removed from the board, as in orthodox chess. A pawn capturing on its 8th rank is not reborn as a pawn but as the piece it is promoting to; this is legal provided the rebirthsquare of the promoted unit is unoccupied. There are two types of Anticirce: the Calvet type where a capture on the rebirthsquare itself is legal, and the Cheylan type where it is illegal.
Examples:
(1) HansPeter Rehm


#2 AntiCirce (9+6) Pao e3, h4, h8 Vao h1 
1.Rb5+? 1.Bc7+? 1.Bb8! threat: 2.PAe3e5# 
(2) Hubert Gockel
1 Pr HPR60 2004 

#2 AntiCirce (14+8) Grasshoppers a2,b2,b7,c7,f3,g7 
1.Sxc2(Sb1)? [2.e3#] 1.S:g4(Sb1)! [2.e3#] 
Back to top  A  Twomovers  B  Threemovers  C  Moremovers  D Studies  E  Helpmates  F  Selfmates  G  Fairies
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