Judges: Belgium, Georgia, Israel, Romania, Russia
Reserve Judges: Belarus
Theme:
In a certain position ("position X") of a win or draw study, a piece (or pieces) of his own side prevent White from carrying out his plan. In the course of the solution White sacrifices this piece (or pieces) either passively (examples 1 and 3) or actively (example 2). Consequently, position X' arises, which is identical in every detail to position X, but without the eliminated piece(s). This enables White to carry out his original plan. In examples 1 and 2, position X is the diagram position; in example 3, position X occurs after Black's 1st move. Pawn(s) may be used as the thematic piece(s).
Question 1:
Are the following schemes thematic? 1)
White: Kh1 Rd5 Rh5 Bd3 - Black: Kg8 Qb2 Rb8 Bf8 Pf2 Pg7; Win1.Bc4? f1Q+ (Td5 is
disturbing). 1.Rh8+ Kh8: 2.Rh5+ Kg8 and the same position arises but without
Rd5, although not Rd5 but Rh5 was captured. 3.Bc4# 2) White: Kg3; Qa8; Pa7 -
Black: Kg1;Qh6; Rh7; Ph3 - Win 1.Qa1? (Pa7 is disturbing); 1.Qh1+ Kh1: 2.a8Q+
Kg1 and the same position as the initial one arises but without Pa7, although
not Pa7 but Qa8 was captured. 3.Qa1+ win.
Answer:
Both cases are not thematic. They satisfy only one part of the theme
definition, but not the part that requires the sacrifice (passive or active) of
the disturbing piece itself (not its substitute).
Question 2:
The definition says:"...Consequently, position X' arises, which is
identical in every detail to position X, but without the eliminated
piece(s)..."
Question: Does it mean that in positions
X and X' the same side must be on move, or is it also possible that in position
X one side is on move and in position X' the opposite side is on move?
Answer:
In both positions, X and X', the same side must have the move. Otherwise the
theme is not satisfied.
Remark: For this reply we have adopted paragraph 9.2 of the FIDE Rules of Chess
(approved Istanbul, November 2000) which says:
"Positions are considered the same, if the same player has the move,
pieces of the same kind and colour occupy the same squares, and the possible
moves of all the pieces of both players are the same. Positions are not the
same if a pawn that could have been captured en passant can no longer is
captured or if the right to castle has been changed temporarily or
permanently."
Question 3:
Does the formulation of the theme D let
the representation of a position X in a thematic try as in the given below
example?
N.Rjabinin, 1998 W: Ka8,Ta1,La2,pp.e2,f6,f7,g7,h3 (8) B: Kh4,Tb4,g3,p.c2 (4) +
1.Lb3? c1D 2.T:c1 Tg:b3 3.Tc7 Tb8+ 4.Ka7 T8b4 5.Tc6 Tb7+ 6.Ka6 T7b4 7.Tc5 Tb6+
8.Ka5 Tb7 9.Tc4+ Kh5 10.Ka4 Tb1 11.Tc5+ Kh4 12.Tb5 T1:b5 13.f8D Tb1 14.Dh8+ Kg3
15.g8D+ Kh2(X)=; 1.e3 T:e3 2.Lb3 c1D 3.T:c1 Tg:b3 4.Tc7 Tb8+ 5.Ka7 T8b4 6.Tc6
Tb7+ 7.Ka6 T7b4 8.Tc5 Tb6+ 9.Ka5 Tb7 10.Tc4+ Kh5 11.Ka4 Tb1 12.Tc5+ Kh4 13.Tb5
T1:b5 14.f8D Tb1 15.Dh8+ Kg3 16.g8D+ Kh2(X') 17.Da2+
Reply: The theme intended position X to be the diagram position or to occur during the actual solution. This is underlined by the examples. Moreover, there is no mention of the possibility of a try in the theme definition. Therefore, the Rjabinin example cannot be considered thematic.
D01 -- 1.Lc7 Kb4 (X) 2.Ld6+ K ~ 3.Lb4 K:b4 (X') 4.Sf4 e1=D(T) 5.Sd3+ S:d3=
D02 -- 1.d5!/i g5 2.S:c7/ii g4 3.d6 g3 (X) 4.Sd5+!/iii Kf3 5.Se3! K:e3 (X') 6.d7 g2 7.d8D g1D 8.Db6 +- i. 1.Ke5? c6! 2.Sb6 g5 3.Sc4+ Ke2 4.Sa5 g4 5.Kf4 g3 6.K:g3 Ke3 7.S:c6 Ke4 8.Kg4 Kd5 =; ii. 2.Kf5? g4 =; iii. 4.d7? g2 5.d8D g1D=
D03 - (X) 1.Tg4+ (1.Tf2+? K:f2 2.Sf4 Se5+ 3.Kb3 c1D -+) 1.- Kf2/Kh2[1.- Kf3 (Kh3) 2.Tg3+=; 1.- Kf1 2.Sg3+ Ke1 3.Tf4 c1D 4.Tf1+=; 1.Kh1 2.Sg3+ Kg1 (Kg2) (2.- Kh2 3.Sf1+=) 3.Se2+=] 2.Tg2+!! (2.Tf4+? Ke3 3.Tf1 Sd1-+; 2.Sf4? Se5+ 3.Kb3 c1D-+) 2.- K:g2 (X') 3.Sf4+ Kf1/Kf3 4.Sd3 Ke2! 5.K:c3 Kd1 6.Sb2+! (6.Kb2? Kd2 7.Sc1 Sc5 8.Se2 Sd3+ 9.Kb3 Sc1+-+; 6.Sf2+? Kc1 7.Sd3+ Kb1 8.Kd2 Sc5 9.Sc1 Se4-+) 6.- Kc1 7.Sc4! (7.Sd3+? Kb1 8.Kd2 Sc5 9.Sc1 Se4+-+) 7.- Sb6! 8.Sa3!= (8.Se3? Sd5+-+)
D04 -- 1.d5 (1.d:e5 K:e4 3.e6 Sg3 3.Kg5 Sf5=) 1.- K:e4 (X), (1.- Sg3 2.d6 S:e4 3.S:e5+ Kf4 4.d7) 2.Sf6+ Kf5 3.Se4 K:e4 (X') 4.d5 Sg3 5.d7 Sf5+ 6.Kh7+-
D05 -- 1.Sc7? a3! = ; 1.Tf7! K:a8 2.g6 a3 3.g7 a2 4.g8D a1D 5.Dg2+ Kb8 6.Dg3+ Ka8 7.Df3+ Kb8 8.Db3+ Ka8 9.Dd5+ Kb8 10.Dd6+ Ka8 11.Dc6+ Tb7 12.D:b7#
D06 -- (X) 1.Td6+! (1.f5? c1D 2.Lf4+ Kh5 3.L:c1=) 1.- Kh7 (1.- Kg7 2.Tg6+ K:g6 3.f5+ K:f5 4.Lf4+-) 2.Th6+! (2.Td7+? Kg8=) 2.- K:h6 (X') 3.f5 c1D 4.Lf4+ D:f4+ 5.K:f4+-
D07 -- 1.Sde3+/i Kd2/ii 2.Sc4+iii Kd3/iv 3.Se1+ Kd4 4.S:c2+ Kd3! 5.Se1+! K:c4 6.Sc2 Kd3 7.L:b3 +- i. 1.- L:b3 Kd2; 1.Sge3+? Kd2; ii. 1.- Kc1 2.L:b3 Kb2 3.L:c2; iii. 2.Sf1+? Kc1=; iv. 2.- Kc1 3.L:b3 Kb1 4.Sa3+ Kb2 5.L:c2+-; v. 3.L:b3? c1D 4.Sf4+ D:f4+! 5.K:f4 c2=
D08 -- 1.Tg4? Kf7 2.Tf4 Kg6 3.Tg3 Kh5 4.Tf8 Da2 5.Kb5 Db2! 6.Kc6 d3 7.Tf7 Kh6! 1.Tg3! Kf7 2.Tf3 Kg6 3.Tg4 Kh5 4.Tg2! Dc2/i 5.Kb4!/ii Kh4 (X1) (5.- Dd2 6.Kb5!; 5.- Db1 6.Kc5!) 6.Tf4 (6.T3g3? Db1!) Kh5 7.Th4! Kh4 (X1') 8.Th2 Kg4/Kg5 9.f3/f4 K:P 10.T:c2+- ii. 5.Kb5? Kh4 (X2) 6.Tf4 Kh5 7.Th4?? Kh4 (X2') 8.Th2 Kg4/Kg5 9.f3/f4 K:P 10.T:c2 d3!= i. 4.- Kh4 (X3) 5.Tf4 Kh5 6.Tf5! (6.Th4?? Kh4! X3' 7.Th2 Kg4/Kg5 8.f3/f4 K:P 9.Tb2: Ke3!=) Kh6 7.Tf3! Da1 8.Kb5! (8.Kb4? De1!) Dh1 9.T3g3 Db1 10.Ka6! Da1 11.Kb6! (11.Kb7? Dh1!) Db1 12.Kc7! Dh1 13.Tg6 Kh7 14.Tg7 +- i. 4.- Da1 5.Kb5 Kh4 6.T3g3 Db1 7.Ka6 Da1 8.Kb6 Db1 9.Kc7 Dh7 10.Tg7 Dg7 11.Tg7 c3 12.Td7! +-
D09 - (X) 1.Tb6+ (1.Se5? Kd6! 2.S:d3 c:b1D -+), 1.- Kc7 2.Tc6+ K:c6 (X') 3.Se5+ Kc5 4.S:d3+ Kd4 5.Sc1 +- (2.- Kb7 3.Sc5+ K:c6 4.S:d3 +-)
D10 -- 1.Sb7! D:b7 2.Te3,Dh7+ 3.Le4 De7 4.Lb7+ D:b7 5.Ta3#; 1.- K:b7?; 2.Te7+ 3.Dh5; 4.Ta3+ Da5; 5.T:a5 +-; 4.- K:b7+ T:e7#
D11 -- 1.Sf5? e4! 2.Kb6 Se3!(3.- La5? 4.Ka6!!) 3.Se3:(3.a6 Sf5:!) La5: 4.Kc5 Lc3 5.Sf5 Lh8=; 1.e4? Sg3! 2.Se6 Sh5!(2.- Se4:? 3.g7 Sf6 4.Sc5 K- 5.Se4!+-) 3.Sc5+ Kb4=; 1.Se6! e4 (X) 2.Kb6!! (2.Sd4? Ld4! 3.ed4 e3 4.g7 e2 5.g8D e1D 6.Dc4 Ka3 7.Kb6 Se3! 8.Dc5 Kb3 9.a6 Sc4 10.Kb7 Sa5=; 2.Sc5+?! Kb4 3.Kb6 Se3: 4.a6 Sd5 5.Kc6 Se7+ 6.Kb7 Kc5=)2.- La5+ (2.- Se3: 3.a6 Sd5+ 4.Kc5 Ka5 5.Kd5: Ka6: 6.Sd4! e3 7.g7 e2 8.g8D e1D 9.Da8++-) 3.Ka6! (3.Kc5? Lc3 4.Sd4 Se3:! 5.g7 Ld4:+!) 3.- Lc3 (X') 4.Sd4! Ld4 (4.- Se3: 5.g7 Ld4: 6.g8D Kb4 7.Da8 - 8.De4:+-) 5.ed4 e3 6.g7 e2 7.g8D e1D 7.Da2 Kb4 8.Da5!+-
D12 -- 1.d5 a2! [1.- Ke3 2.Lb5 (2.La6? L:h3=) Kd4 3.d6 L:h3 4.d7 L:d7 5.L:d7 Kc5 6.K:a3 +-] 2.Kb2! [2.K:a2? Kc3 3.Lb5 Kb4 4.h4 (4.d6+ L:h3=) Kc5 5.Lc6 Lg4 6 a5 g5=; 3.La6 L:h3 4.Lf1 Lc8 5.Lh3?? Lh3 6.a5 Kd4 7.a6 Kc5! 8.a7 Lg2 -+]; 2.- Ke3 (X1) 3.La6! (3.Lb5? Kd4 4.d6 L:h3 5.d7 L:d7 6.L:d7 Kc5=) 3.- L:h3 (X2) (3.- Lf5 4.Ld3! Lc8 5.Lf5 L:f5 6.a5; 3.- L:a6 4.d6 Lc8 5.a5 f5 6.a6 f4 7.a7 f3 8.a8D f2 9.Dg2 Le6 10.h4 g6 11.Ka1) 4.Lf1! Lc8 (X1') 5.Lh3! (5.a5? Kd4 6.Lh3 K:d5) 5.- L:h3 (X2') 6.a5 Lc8 7.d6 f5 8.a6 f4 9.a7 f3 10.a8D +-
D13 -- 1.Sg3? e1D 2.S:h1 D:h1 3. ~ K:a2!; 1.Sb4? a:b4 2.T:b4+ Ka2!; 1.Tc4? e1D 2.Sc1/Sc3 Dd1/De6! 1.Sc1 K:c1 (X) 2.Tc4+ Kd2 3.Tc1 K:c1 (X') 4.Sf4 e1D 5.Sd3+ Kc2 6.S:e1 Kb3 7.Sd3 (7.Kc7? Le4!) K:a4 8.Kc7Kb5 9.Sb2=
D14 -- 1.- g2 (X) (1.- L:c6 2.La4! g2 3.Ld2+ Kb1/Kb2 4.L:c6 g1D+ 5.Ke2 g3 6.a8D D:f2+ 7.Kd3+-) 2.Ld2+ Kb2 3.Lc1+! K:c1 (X') (3.- Ka1/Ka2 4.a8D+-) 4.Le4+! L:c6 (4.- Kb2 5.L:g2 +-) 5.L:g2!! (5.L:c6? g1D+ 6.Ke2 Dd1+ 7.Ke3 Dd2+ 8.Ke4 Db4+ 9.Kd5 Da5+ 10.Kd6 D:a7 -+) 5.- L:g2 6.f4!! g:f3 (6.- g3 7.f5 +-) 7.Kf2! +-
D15 - 1.~? Dd8+ 2.Ka6 Ta7+ 3.S:a7 Db6+= 1.Tg8! [1.Sb6+?! T:b6 2.K:b6 (2.Tg8+ Ka7 3.d8D Ta6+ 4.b:a6 D:d8+ 5.T:d8=) 2.- Df2+ 3.Ka5 Da7+=] 1.- T:b5+ 2.K:b5 Dh5+ (X) 3.Kb4! [3.Kb6/ Kc6?! Dg6+ 4.Kc7 (4.Sd6+ D:g8) 4.- D:g8 5.d8D Dc4+ 6.Kd7 (6.Kb6 Dc7+=) 6.- Dg4+ 7.Ke8 Dh5+ 8.Ke7 Dh4+=] 3.- Dh4+ 4.Kb3! (4.Kc5?! Df2+=) 4.- Dh3+ 5.Kb2!! (5.Tg3?! De6+ 6.Kc2 De2+ 7.Kc3 De5) 5.- D:h2+ 6.Kb3 Dh3+ 7.Kb4 Dh4+ 8.Kb5! (8.Kc5?! Df2+ 9.Kd6 Df6+ 10.Kc7 Dc3+ 11.Kd8 Da5+ 12.Sb6+ Kb7 13.Tg6 Df5=) 8.- Dh5+ (X') 9.Kb6 +-
D16 - (X) 1.Dg4+ Kh6 (2.Dc8? g4+; 2.Dd1? g4 3.Kh4 Kh7 3.Db3 g3 5.Th1 Le2 6.Df7 Tg4+ 7.Kh5 Tf8 8.D:f8 g6#; 7.Kh3 Kh6 8.Df5 Tg5; 2.g3? Lf1+ 3.Tg2 f3 4.D:f3 g4+) 2.Dh5+ K:h5 (X') 3.g4+ Kh6 4.Kg2#; 3.- f:g3 4.K:g3#
D17 -- 1.- Kc2! (X)(1.- Ka2 2.Ta4+ Kb3 3.Ld1+ Kc3 4.Ta3+ Kd2 5.Tb3+-) 2.Te2+! Kc3! (2.- Kc1 3.L:a8 b1D 4.Te1+-; 2.- Kb3 3.T:b2+-) 3.Tc2+!! K:c2 (X') 4.L:a8Kd3! (4.- Kd2 5.Le4 Ke2 6.f3! Ke3 7.g4!+-) 5.f3 b5 (5.- Ke3 6.Le4 b5 7.g4!+-) 6.Le4+ (6.g4? Kc2 7.Le4+ Kc1=; 6.K:h6? Ke3 7.Le4 g4!=) 6.- Kd2! 7.K:h6! (7.f4? g:f4 8.g:f4 Ke3=)7.- b4 8.K:g5 b3 9.f4 Kc1 10.f5 b1D 11.L:b1 +-
D18 - (X) 1.Se7+! (1.Le3? fg! 2.Ld4 g5 3.Le3 g4 4.Lf2 g3 5.Le3 g2 6.Ld4 g1D 7.L:g1 Kd8!) 1.-Kd8 2.Sc8!! (2.Lg5? Da7! 3.Sd5+ Kc8 4.Se7+ Kb8) 2.- S:c8 (X') 3.Le3 Kd8 (3.- f5 4. Ld4 f4 5.Lf2! f3 6.Le3 f2 7.L:f2 Kd8 8.Lh4) 4.Lg5+ Kc8 5.Le3 f6! 6.Ld4! ab 7.Kb2! b4 8.K:b3 Kd8 9.L:f6+ Kc8 10.Ld4 Kd8 11.Lf6+ Kc8 12.Ld4=
D19 - (X) 1.Ld8+!? K-! 2.Lb6 Kb6: 3.Kg1 Lg3: 4.b8=D+ Lb8:-+ 1.Ld6! (1.Lf8? Lg3:+ 2.Kg1 Kb7: 3.Lh6: Kc6 4.Le3 Kd5 5.h6 Ke4 6.h7 Kf3 7.h8D h2#) 1.- Ld6: 2.b8D+ Lb8: (X') 3.Kg1! Kc5! 4.Se2 Kd5 5.Kf2 Ke4 6.Sg1! La7+ 7.Kg3 Lg1: 8.Kh3: Kf3=
D20 -- 1.b7 La7 2.b:c6 Lb8 (X) 3.c7 L:c7 4.b8D L:b8 (X') 5.La6 Kd3/Se5 6.Kb3 Se5/Kd3 7.g4 Ld6 8.g5 Lf8 9.g6 Lg7 10.Lb5! (10.Kb4? Sc6+! 11.Kb3 Sa5+; 11.Kc5!? Sa5 12.Kd5 K:c3! 13.Ke6 Se5 -+) 10.- Lf6(Lh8) 11.La6 Lg7 12.Lb5 =
D21 - (X) 1.a8D+ Kb1 2.Da1+ (2.D:c6+ Tb2+=) 2.- K:a1 3.Ta8+ Kb1 4.Ta1+ K:a1 5.Ta8+ Kb1 6.Ta1! (6.g8D? Th3+; 7.Dg3+ T:g3#!) 6.- K:a1 (X') 7.g8D+-
D22 -- 1.Kh2! Sf1+ 2.Kg1 f3 3.Sd2+ Ke3! 4.S:f1 g:f1D+ 5.K:f1 h2 (X) 6.Lf2+ Kf4 7.Le3+ K:e3 (X') 8.Te1+ Kf4 9.Kf2 +- 6.- Ke4 7.Te1+ Kd5 8.Te5+! K:e5 9.Lg3+! +-; 7.- Kg3 8.Lf4+! +-; 1.- S:g4+ 2.Kg1 Kf3 (2.- f3 3.Lg3) 3.Sd2+ Ke2 4.c4 f3 5.S:f3 K:f3 6.Tc3+-
D23 - (X1) 1.b8D!? Dg7+! 2.K:g7 =; 1.g7!? Dd8+ 2.Kh7 (2.Kf7 Dd7+=) 2.- Dd3+= 1.Th4+! K:g6 (1.- Kg5 2.g7 Kg6 3.Tg4+ Kh5 4.b8D De6+ 5.Kf8 Dd6+ 6.Kf7 D:b8 7.Th4+ Kg5 8.Th5+ K:h5 9.g4+-) 2.Tg4+ Kh5 (X1') 3.b8D [ 3.Tf4!? Dd8+ 4.Kf7 Dc7+ 5.Kf6 (5.Kg8 D:b7=) 5.- Dd6+ 6.Kg7 Dg6+ 7.Kf8 Dd6+=] 3.- De6+ 4.Kf8 Dd6+! (4.- Df6+ 5.Ke8 De6+ 6.Kd8 Dd6+ 7.Kc8+-) 5.Kf7! [5.Kg7!? Dg6+ 6.Kf8 (6.Kh8 Dh6+) 6.- Dd6+ 7.Kf7; 5.D:d6!?=] 5.- D:b8 (X2) 6.Th4+ Kg5 7.Th5+! K:h5 (X2') 8.g4+-
D24 - 1.Th1+ Kg4 2.Th4+ K:h4 3.Tf4+ Kh3 (3.- Kg3 4.Tf3+ K/L:f3 =) 4.Th4+ K:h4= 1.- g:h1D 2.Tf4+ Kh3 3.Tf3+ Kg2 4.Tf2+ Kg1 5.Tf1+ Kg2 6.Tf2+ Kh3 7.Tf3+ Kh4+ 8.Tf4+ Kh5 9.Th4+ Kg5 10.Tg4+ Kh6 11.Th4+ Kg7 12.Th7+ Kf8 13.Th8+ L/D:h8 =
D25 - (X) 1.Sf2+ [1.Td7? Dd5 (1.- d:e1D 2.Sf2#) 2.L:d5 c:d5 (2.- d:e1D 3.Lb3+ Kd2 4.Sb4+ Ke3 5.Sc2+ Kf2 6.Tf7+ Kg1 7.S:e1 h2 8.Sf3+ Kg2 9.Se1+ Kh1=)] 1.- K:e1 2.Sd3+ Kd1 (X') 3.Tf2 Dd5 4.L:d5 c:d5 5.Kb1 h4! 6.Th2 d4 7.Tf2 h2 8.T:h2 h3 9.Tf2 h2 10.T:h2 e1D 11.Sb2#
D26 - (X) 1.Te7+ Kd8: 2.Td7+ Ke8 (X') 3.Tc7 Kf8 4.Tc8+ Le8 5.Sd7+ Kg8 6.Te8:+ Kh7 7.Sf8+ Kh6 8.Sg6 Kh5 9.Th8+ Kg4 10.Tf4!! Sf4: 11.Se5#
D27 - (X) 1.Th7? Kg6 2.Sh4?? 1.Sg3+ K:h4 2.Sf5+ Kh5 3.Th7+ K:g5 4.Tg7+ Kh5 5.h4!! Dg1 6.Tg5+ D:g5 7.h:g5 +-
D28 -- 1.Kd1! (X) 1.Kb1!? Th1+! 2.Ka2 Th2+ 3.Ka3 Th1 4.Ka4 Ta1+ 5.Kb5 Tb1+ 6.Kc5 Tf1! 7.Kd5 Kd3 8.Ke5? fg! & 9.- Tf5#) 1.- Kd3 2.Ke1 Ke3 3.Kf1 Kf3 4.Kg1! T:g6+ 5.Kf1! Th6 6.Ke1 Ke3 7.Kd1 Kd3 8.Kc1 Kc3 (X') 9.Kb1 Th1+ 10.Ka2 Th2+ 11.Ka3 Th1 12.Ka4 Ta1+ 13.Kb5 Tb1+ 14.Kc5 Tf1 15.Kd5 Kd3 16.Ke5+-
D29 - (X) 1.Kc7! T:c4+ 2.Kb8! (2.Kd8? T:c2!) 2.- Td4 (X') 3.Lb3! Kh3 (3. -T:d7? 4.Le6+!) 4.Kc7 K:h2 5.d8D! T:d8 6.K:d8 Lb7 7.Kc7 Le4 8.Kb8 a6 9.Ka7 + -
D30 -- 1.Dd3! (1.De6/Dc6? Sd1!; 1.Df1? Se4!) Td7 2.D:d7 Se4 3.D:c7+ Kh3 4.Dh2+ S:h2 5.Kg1 Kg3 (6.h7? Sd2 7.h8D Shf3+ 8.Kh1 Se4 9.Db8+ Kh3 10.Dh2+ S:h2 11.Kg1 Kg3 12.f7 Sd2 13.f8D Shf3+ 14.Kh1 Se4 15.Db8+ Kh3 16.Dh2+ S:h2 17.Kg1 Kg3 18.h6Sd2 19.h7 Shf3+ 20.Kh1 Se4 21.h8D Sf2#) 6.f7 Sd2 7.f8D Shf3+ 8.Kh1 Se4 9.Db8+ Kh3 10.Dh2+ S:h2 11.Kg1 Kg3 12.h7 Sd2 13.h8D Shf3+ 14.Kh1 Se4 15.Db2 Sf2+ 16.D:f2+ K:f2=
D31 -- (X1) 1.Tb8+ (1.T:c7 D:e4+=; 1.Th2 D:e4+=) 1.- K:a7 2.Tb7+ (2.Tb2 D:h5=; 2.Th8 D:e4+=) 2.- Ka8 (X1') 3.T:c7! (3.Th2 D:e4+ 4.L:e4=) 3.- D:h5 (X2) (3.- Df8 4.Tc8+! D:c8 5.c7+ Ka7 6.Th7+-) 4.Tc8+! (4.Tf7? Dd1+=) 4.- Ka7 5.Ta8+! K:a8 (X2') 6.c7+ Ka7 7.c8D D:d5! (X3) (7.- Dd1+ 8.Dc1 Dd3+ 9.Ka2 De2+ 10.Ka1 Dh2 11.Dc5+ Kb8 2.Db6+ Kc8 13.Le6#) 8.Dc7+! (8.Df5 Dd1+=; 8.e:d5?=) 8.- Ka8 9.Da7+! (9.e5 Da2+=; 9.e:d5?=) 9.- K:a7 (X3') 10.e:d5+-
D32 -- 1.Kh4 Tg4+ (X) 2.Kh5 Tg5+ 3.Kh6 Tg6+ 4.Kh7 Tg7+ 5.Kh8 T:g8+ 6.Kh7 Tg7+ 7.Kh6 Tg6+ 8.Kh5 Tg5+ 9.Kh4 Tg4+ (X') 10.hg! Th2+ 11.Kg5 Th5+ 12.Kf4 Tf5+ 13.Ke4 Tf4+ 14.Ke5! Tf5+ 15.gf! +-
D33 -- 1.Kf2? Tg2+ 2.Ke3 Te2+ 3.Kd3 Td2+!= 1.Sg5! T:g5+ 2.Kf3 Tg3+ 3.Ke4 Te3+ (X) 4.Kd5 T:e5+ 5.Kc4 Tc5+ 6.Kd3 T:c3+ 7.Ke4 Te3+ (X') 8.Kd5 Te5+ 9.Kc4 Tc5+ 10.d:c5#
D34 -- 1.Kg1! Tg5+ (X) 2.Kf1 (2.Kh1? Th5!) Tf5+ 3.Ke1 Te5+ 4.Kd1 Td5+ 5.Kc1 T:c5+ 6.Kd1 Td5+ 7.Ke1 Te5+ 8.Kf1 Tf5+ 9.Kg1 Tg5+ (X') 10.Kh1 Th5 11.T:h5 g5 12.Th2 Da1 13.T:a1+-
D35 - (X) 1.D:e4? Kb3 2.De6+ Kc2 3.D:c6+ Kb1 4.Dc1+ Ka2= 1.Sc5+! K:b4 2.Sd3+ Kc4/i (X') 3.D:e4+ Kb3 4.De6+ Kc2 5.D:c6+ Kb1 6.Dc1+ Ka2 7.Sb4+ Kb3 8.Dc3+ Ka4 9.Da3#; 3.- Dd4 4.Se5+ Kc5 5.b4+; i 2.- Kb3? 3.Sc1+ Kb4 4.D:e4+ Kc5 5.De3+ Kd6 6.D:a7+-
D36 -- 1.a7? T:d3+ 2.Kc7 Tc3+ 3.Kb7 K:h7 4.a8D g2 5.Da7 Tc1! 6.Ka8+ Kg8! 7.Db8+ Kh7 8.Db7+ Kh8 ! (7.a6 g1D 8.D:g1+ T:g1 9.a7 Kf7 =) 1.h8D+! K:h8 2.a7 T:d3+ 3.Ke7!! Te3+ (X) 4.Kf7 ! T:f3+ 5.Ke7! Te3+ (X') 6.Kd7 Td3+ 7.Kc7! Tc3+ 8.Kb7 g2 9.a8D+ Kh7! 10.Da7! Tc1 11.Ka8+ ! Kg6 (11.Kb8+? Kg8! 12.a6 g1D=; 11.Ka6+ ? Kg6! 12.Db6+ Kh5! 13.Db5+ Kh4 ! 14.D:b4+ K:h3 =) 12.Da6+ ! Kg5 ! 13.h4+! Kg4 14.De2+! Kh3 15.De3++- (14.De6+ ? Kf3! 15.Dd5+ Kg3=)
D37 -- 1.Tb1+ Kh2 (1.- Kg2 2.Tg5+) Tb2+ Kh1 3.Lf3+! ef (X) (4.Kg3? bc!) 4.Th5+ Kg1 5.Th1+! K:h1 (X') 6.Kg3 Le4 7.Ta2 Ta7 8.T:a7 Da8 9.T:a8 L:a8 10.d7 Kg1 11.d8D +-
D38 -- 1.f7 Sg6 (X1) (2.f8D?! S:f8 3.Ld5+??) 2.Se7! Sf8 (X2) 3.Sg6! S:g6 (X1') 4.f8D S:f8 (X2') 5.Ld5+ c6 6.L:c6+ Ka7 7.Le3#; 5.- Ka7 6.Le3+ c5 7.bc+ (e.p.) Ka6 8.Lc4#
D39 - X 1.d5??; 1.Kd4?? 1.Kf3! (1.Ke3? K:d5!) 1.- Kd7 (1.- K:d5 2.Ke3 Ke6 3.Ke4 Kd6 4.d5!) 2.d6! K:d6 (X') (2.- Ke6 3.Ke4 K:d6 4.d5!) 3.Ke4 Ke6 4.d5+ Kd6 5.Kd4! Kd7 6.K:c3 Kd6 7.K:c4 Kd7 8.Kb5 +-
D40 -- 1.- a2 2.S:c3 (2.Df6 Kb2 3.S:c3 bc 4.Se4 a1D+ 5.K:f2 Kb3=; 2.D:e6 Kb2 3.S:c3 bc=; 2.Sb3+ T:b3 3.Sc1 L:c4+ 4.K:g2 Kb2=; 3.D:e6 Kb2 5.De5+ Tc3=; 3.Df6+ Kb1 4.Dg6+ Kb2#) 2.- bc (X) 3.Sb3+! (3.Dc2 cd =) 3.- Kb2 4.Sa1! K:a1 (X') (4.- Lf5 5.Dg5 c2 6.Dd2 Kb1 7.Sb3 Kb2 8.Dc1+ K:b3 9.K:f2 +-) 5.Dc2 Lf5 6.Dc1+ (6.D:c3+ Kb1 7.Db3+ Ka1 8.K:f2 Lc2 9.Db4 Lb3 =) 6.- Lb1 7.D:c3#
D41 -- 1.- e4! (X) (1.- Kc7? 2.e4 Kd7 3.Kb6! +-) 2.Se5+ Kc7! 3.Sd7!! Kd7: (X') 4.Kb6 Tb5+ 5.cb5: ab5: 6.Kb7! Ke7! 7.Kc6: b4 8.ab4: a3 9.Kb7! a2 10.c6 a1=D 11.c7 Dc3 12.c8=D!= (12.- Db4:+ 13.Ka8 Da3+ 14.Kb8 De3: 15.Dc7+ Kf6 16.Dh7:=)
D42 -- 1.Tf5 Tf4 (X) 2.Lb8 Td4 (2.- Kb8: 3.Tf4: gf4 4.Kc1 Kc8 5.Kd2 Kd7 6.Kd3 Ke6 7.Ke4 Kf6 8.Kf4: +-; 2.- Tf5 3.gf5 g4 4.f6 g3 5.Lg3: hg3 6.f7 +-) 3.Lf4 Tf4: (X') (3.- Td1+ 4.Lc1 Td8 5.Lg5: +-) 4.Tf4: gf4 5.Kc1 Kb8 (5.- f3 6.Kd2 f2 7.Ke2 Kb8 8.g5 +-) 6.g5 +-
D43 - (X) 1.Ka8? T:b7-+; 1.h7! Th7! 2.e7! T:e7! (X') 3.Ka8!! T:b7 4.L:b7+ Ka5 5.Lc6 Tg7 6.L:e4 Te7 7.Ld5 T:e3 8.Kb7 Tc3 9.Le6 Tc1 10.Ld5 Tc5 11.Le4 Tc4! 12.Ld5=; 3.- Te8 4.b8L!!+ T:c8, T:c8= (4.b8D? T:c8 -+; 4.b8S+? Ka5 5.Lb7 Tc3 -+) (4.- Ka5? 5.L:c7 -+; 5.- T:c8+? 6.Kb7 Tc7+ 7.K:c7-+)
D44 - (X)1.c6+! (1.f6? g3!-+) 1.- Ka8! 2.c7 Kb7 3.c8=D+ Kc8: 4.b7+ Kb7: (X') 5.Ld4!! (5.Le3? g3 6.Lf4 g2 7.Lh2 Ld3-+) 5.- Ld4: (5.- g3 6.Lh8: g2 7.Ld4=) 6.e5! Le3! 7.Kb2 Ld4+ 8.Ka3! Le5: 9.f6! Lf4 10.Kb2 Le5+ 11.Ka3! Lf6: 12.h8D! Lh8:=
D45 -- 1 fe? (1.Lg3? d3) d3 2.Ld6: d2-+; 1.Le3:?! de 2.fe b5!/i 3.c5!/ii d5 4.c6 d4 5.ed e3 6.d5 e2 7.d6 e1D? (X1) 8.c7+ Kd7 (X2) 9.c8D+ Kc8: 10.d7+ Kc7 (Kd8,Kd7:) (X2') 11.d8D+ Kd8: (X1'); 8.- Kc8 (X3) 9.d7+ Kc7: 10.d8D+ Kd8: (X1'); 9.- Kd7: 10.c8D+ Kc8: (X3')= 7.- e1S! 8.c7+ Kd7! 9.c8D+ Kc8: 10.d7+ Kb7! 1.Lg5+!! Kc8!iii 2.Le3: de 3.fe b5!/i 4.c5!/ii d5 5.c6 d4 6.ed e3 7.d5 e2 8.d6 e1D(S) (X4) 9.d7+ Kc7 (X5) 10.d8D+ Kd8: 11.c7+ Kd7 12.c8D+ Kc8: (X4); 9.- Kd8 [X6] 10.c7+ Kd7: 11.c8D+ Kc8: (X4'); 9…Kc7: 10.d8D+ Kd8: (X6')=
D46 -- 1.- Tg3+ (X1) (1.- Ta6: 2.ba6 +-) 2.Kf7 [2.Kh6: h2 3.Dg6 h1D+ 4.Kg7 (4.Dh5 Th3) 4.- Tg6:+ 5.Kg6: De4+ -+] 2.- Tf3+ (X2) 3.Ke7 Te3+ (X3) 4.Kd7 Td3+ (X4) 5.Kc7 Tc3:+ 6.Kd7 (Dc6? Tcc6:+ 7.bc6 Tc6:+ =) 6.- Td3+ (X4') 7.Ke7 Te3+ (X3') 8.Kf7 Tf3+ (X2') 9.Kg7 Tg3+ (X1') 10.Kh6: h2 11.Df6+-
D47 -- 1.c7! Lc3+/i 2.Kf7! Db7 3.Sf4+ Kd4+/ii (X) 4.Lg7+! K:c5 5.Lf8+ Kd4 (X') 6.Se6+ Ke5 7.f4+ Kd5 8.Le4+ K:e4 9.Sc5+ K:f4 10.S:b7+-; i 1.- Db2+ 2.Kg6! D:f2 (2.- Db7 3.Sf4+ Kd4 4.Lf5) 3.c8D +-; ii 3.- Ke5 4.Ld6+ Kd4 5.a6 Dc8+-
D48 -- 1.f4+ Kd5 (1.- Ke4 2.Sd6+ Kd5 3.S:c4 K:c4 4.g5 f:g5 5.f:g5 S:e3 6.Kc7!) 2.e4+ D:e4 (X) 3.c4+ D:c4 4.e4+ D:e4 (X') 5.Sc3+!+-; 4.- K:e4 5.Sd6+!+-
D49 -- 1.c7+ Kc8 (X) 2.Sf8!/i Se5 3.Sg6/ii S:g6/iii (X') 4.Lf1! e2 5.Lg2 Tb2 6.Ka8!! Se7!/iv 7.d:e7 Lf2 8.e8D+ K:c7 9.De5+ Kd8/v 10.Dg5+ Kc8 11.Lb7+ T:b7 12.Dc5+ L:c5 =; i. 2.Lf1? e2 3.Lg2 Tb2-+ (2.Sf6? g:f6 3.Lf1 e2 4.Lg2 Tb2 5.Ka8 Se7 6.d:e7 Lf2 7.e8D+ K:c7-+); ii. 3.L:d7 S:d7 4.Sg6 Sf6 5.Se7+ Kd7 6.c8D+ K:d6 -+; iii. 3.- Sc6+ 4.Ka8 Th2 5.Lf5 Td2 6.Se7+ S:e7 7.d:e7 K:c7 8.e8D Lf2 9.Db8+ Kc6 10.Dc8= ; 4.- Td2 5.Se7+ S:e7 6.d:e7 K:c7 7.e8D c2 8.De5+ Kc6 9.De4+ Kd6 10.Df4+ Kd5 11.Df3+ Kc4 12.De4+ Kc3 13.D:e3+ Td3 14.D:e1+ Kb2 15.De2 Td5 16.Dg2 Tc5 17.L:d7 g5= iv. 6.- Tb6 7.Lb7+ T:b7 =; v. 9.- Kb6 10.Dd6+ Kb5 11.Lc6+ d:c6 12.D:c6+ K:c6=
D50 -- 1.Sh6 Le4+! 2.Se4 gh3+ 3.Sg4! [3.Sg5 b1D+ 4.Tb1 Dg5+ 5.Kg5 Sf3+ (6.Kh6??) 6.Kg6 Se5+ 7.Kf6 Sd7+ 8.Ke6 (8.Kg5 Kh7 9.Sf5 Sc5 10.Sd4 a2 11.Ta1 h2! =) 8.- Kh7 9.Sg4 (9.Sf5 Sc5+ 10.Kf7 Sd3! 11.Th1 Se5+! 12.Kf6 Sg4+ 13.Kg5 Sf2 14.Tb1 Sd3! =) (9.- Sc5+ 10.Kf7 Se4 11.Sf6+ Sf6 12.Kf6 a2! 13.Th1 Kg8 14.Te1 h2! 15.Ke5 Kf7 16.Kd4 Ke6! =)] 3.- Dg4+ 4.Sg5 b1D+ 5.Tb1 Dg5+ 6.Kg5 Sf3+ 7.Kh6+- 6.- Kh7 7.Te1; 4.- Df5+ 5.Kf5 a2 (5.- Sf3 6.Kf6 Sg5 7.Kg6+-) 6.Sf7+! (6.Th7+ ??) 6.- Kh7 (6.- Kg7 7.Sd6+! Kh8 8.Kf6 b1D 9.Lb1 a1D+ 10.Kg6+-) 7.Sg5+ Kh8! 8.Th7+! Kg8 9.Kf6 b1D 10.Tg7+ Kf8 11.Se6+ Ke8 12.Te7#
D51 - (X) 1.Sg6+! (1.S:c2? =) K:h3 2.Sf4+ (2.S:c2? Tg4) Kh4 (X') 3.S:c2 Kg4 4.L:g5 K:g5 (4.- h:g5? 5.h6) 5.e3+-1.- Kh5 2.Sf4+ (2.S:c2? T:g6) Kh4 3.S:c2+-
D52 - (X) 1.T:g8? Kf7 2.Tc8 K:g7 3.T:c7+ Kf6 4.Kg2 T:h4= 1.Kg2! T:h4 2.Kg3 Th1 (X')/i 3.T:g8 Kf7 4.Th8+-; i) 2.- Th7 3.T:g8 Kf7 4.Tc8 Se2+ 5.Kf3 Th3+ 6.K:e2 K:g7 7.T:c7+ Kf6 8.Lf2+-
D53 -- 1.Th3+! T:h3 2.K:e2 Th2+ 3.Kd1 d:c1D+ 4.L:c1 Td6+ 5.Sd5! T:d5 6.Ld3! T:d3+ 7.Ld2! Td:d2+ 8.Kc1 Tc2+ 9.Kb1! Tb2+ 10.Kc1! Thc2+ 11.Kd1 Td2+ 12.Kc1! Tbc2+ 13.Kb1 Tb2+ 14.Kc1 =
D54 -- 1.Tb7 e2 (1.- Ld5 2.f7 L:f7 3.T:f7 +-) 2.La5 (2.Te7 Kf1=) 2.- S:f6! 3.T:f7 [3.- Sd5+ 4.Kg4! Se3+ (4.- Sb4 5.Te7 Kf1 6.f6 b2 7.f7 b1D 8.f8D+-) 5.Kh4 b2 (5.- Kf1 6.f6! e1D 7.L:e1 K:e1 8.Tb7 Sf5 9.Kg4 Sd6 10.Tb6+-) 6.Tb7] 3.- b2! 4.Tb7! (4.Tg7+? Kf1 5.Tb7 Sd5+ 6.Kg4 Sb4! 7.T:b4 e1D! 8.Tf4+ Df2!) 4.- Sd5+ (X) 5.Kg4! (5.Ke4/e5 Sb4! 6.T:b4 e1D!) 5.- Se3+! (5.- Sb4 6.T:b4 e1D 7.T:b2+! +-; 5.- Sf6+ 6.Kh4 +-) 6.Kh4! S:f5+ 7.Kg4 Se3+ 8.Kf4 Sd5+ (X') 9.Kf5! Sb4! 10.T:b4 e1D 11.T:b2+ Kh3 12.Th2+! (12.L:e1=) 12.- K:h2 13.L:e1 +-
D55 - (X) 1.Lf2+ (1.g5? K:g5) 1.- Kg5 2.Lh4+! [2.gh Kh6! 3.Td6+ (3.Tg1 Dd5+) K:h5 4.K:f4 Dg2] 2.- K:h4 (X') (2.- Kg6 3.Td6+ Kh7 7.Td7+ Kg6 5.Td6+ Kh7 6.Td7+ =) 3.g5! De8 (3.- Dg7 4.Th1+ Kg5 5.Tg1+ Kh6 6.T:g7 K:g7 7.K:f4 h4 8.a4=)4.K:f4 Kh3 5.Kf3 Kh2 6.Td2+ Kg1 7.Td1+ Kh2 8.Td2+ Kh3 9.Td1 Kh4 10.Kf4 Kh3 11.Kf3=
D56 -- 1.- Th4+ 2.Kg3 Lf2+! 3.S:f2 Th3+! (X1) 4.Kg4 Th4+ 5.Kg5 T:h5+ 6.Kg4 Th4+ 7.Kg3 Th3+ (X1') 8.S:h3 Tf3+ 9.Kh2 T:h3+ (X2) 10.Kg1 Th1+ 11.Kf2 Tf1+ 12.Ke3 Tf3+ 13.Kd2 Td3+ 14.Kc1 Td1+ 15.Kb2 Tb1+ 16.Kc3 T:b3+ 17.Kd2 Td3+ 18.Ke1 Td1+ 19.Kf2 Tf1+ 20.Kg3 Tf3+ 21.Kh2 Th3+ (X2') 22.T:h3#
D57 -- (X) 1.Tf8+! Ka7 2.Ta8+ K:a8 (X') 3.L:e4+ Ka7 4.L:c2 g2 5.h7 g1D 6.h8D d5 7.Db8+ Ka6 8.Dc8+ Kb5 9.Dd7+ Kc4 10.Dc6+ Kd4 11.Db6+-; [6.- ab 7.ab! (7.Db8+? Ka6 8.Dc8+ Kb5 9.D:d7+ Kc4 10.Dc6+ Dc5! -+) 7.- S:c2 (7.- d5 8.Da1#) 8.Dc8 d5 9.Db7#] 1.Ta5+? ba 2.L:e4+ Ka7 3.L:c2 g2 4.h7 g1D 5.h8D Db6+!; 1.Tc5? dc! 2.L:e4+ Ka7 3.L:c2 g2 4.h7 g1D 5.h8D Dg3+!
D58 - (X) 1.f:e4? dc3! 1.Lb2! [1.Lb4+? L:b4 2.f:e4 (2.S:b4 d3!) Ld2! 3.e5 (3.a4 La5 4.e5 Lc7 =) Le3! 4.a4 Lg1 5.T:g2 h:g2 6.a5 L~ 7.a6 g1D! -+] 1.- Ld6 2.La3 L:a3 3.f:e4 Ld6 (3.- L:e4 4.T:h3+-) 4.e5 Lb8 (4.- Lc7 5.a4!) 5.a3! (5.a4? Lc7 6.a5 L:a5 7.Sf4 Le4=) 5.- Lc7 6.a4 Lb6 [6.- Lb8 7.a5 Lc7 8.a6 Lb8 9.Sf4! Le4 10.T:h3 L:e5 11.S:h5 d3 12.a7!+-; 6.- Lf1 7.Tc2! L:d3 8.T:c7 Lf5 (8.- Ke8 9.e6!) 9.Tb7! Ke8 10.Tb2! +- (10.- Kd7 11.a5 Ke6 12.a6 Le4 13.Kg7 Lg2 14.a7 d3 (14.- h2 15.T:g2 h1D 16.a8D+) 15.Ta2 La8 16.Kf8+-] 7.Sf4! (7.Sf2? Lc7! 8.S:h3 Le4=) 7.- d3! [7.- Lc7 8.S:g2!+-; 7.- Le4 8.T:h3! +- (8.- Lc7 9.e6! L:f4 10.T:h4 Le5 11.T:e4 L:f6+ 12.Kh7 d3 13.Tf4 d2 14.Tf1 h4 15.e:f7 K:f7 16.a5! +-)] 8.S:h3! (8.S:g2? d2!) d2 [8.- L:h3 9.T:h3+- 9.- d2 10.Td3! La5 11.Td5! h3 12.T:a5 Ke8 13.e6! f:e6 14.Kg8 d1D 15.f7+ Kd7 16.f8D Dg4+ 17.Kh8 Dd4+ 18.Dg7+ + -); 8.- Le4 9.Sg5! +-; 8.- Ld5 9.Sf4! +-] 9.T:g2 Ke8 10.T:d2+-
D59 -- 1.Sd3! T:d3 2.Lh8! Tf4+ 3.Ke2! Tc3 4.Ta1+! Kb2 5.a6! Tg4! 6.Kf2! h1D 7.T:h1! Tf4+ (X) 8.Kg2! Tg4+ 9.Kh2! T:h4+ 10.Kg2! Tg4+ 11.Kf2 Tf4+ (X') 12.Ke2! Te4+ 13.Kd2! (X'') Td4+ 14.L:d4+-
D60 -- 1.Kc4 La2 (X) /i 2. Tc2+/ii K:d1/iii 3.Td2++! Kc1 (X') 4.La3+ Kb1 5.L:a2+ Ka1 6.Lb2+ K:a2 7.Lc3+ Kb1 8.Tb2++-; i. 1.- L:e4 2.La3+ K:d2 3.Lb4+ Kc1 4.L:e1 e:d1D 5.L:d1 K:d1 6.Lb4+- 6.- Ke2 7.g5 Kf3 8.K:c5 K:g3 9.Kb6 Ld3 10.g6 L:g6 11.K:a6; 1.- K:d2 2.Lb4+ ; 1.- D:d2 2.La3+, 1.- Df1 2.Lg5! e1D+ 3.Te2+; ii. 2.La3+? Kd2 3.Lb4+ Kc1 4.L:e1 e:d1D (4.- L:b3+ & 5.- d1D); iii. 2.- Kb1 3.Tb2+ Ka1 4.T:a2 Kb1 5.Se3 +-
D61 -- 1.Tb3+! K:a2 (1.-Ka4 2.Te3 e1D 3.T:e1 L:e1 4.Kb2 Lb4 5.S:f7=) 2.Tb2+! Ka3 3.Tb1! e1D(T) 4.Ta1+!! D(T):a1=; 3.- e1S+ 4.Kc1=
D62 -- 1.Sa3 ba3 (X1) 2.Dh1+! Kb2 3.Da1+! K:a1!(X1') 4.c4! Lc1(Lc3) 5.Kc2 Lb2(X2) 6.Kb3! Le5 7.Kc2 Lb2 (X2') 8.e5! (8.Kb3? Kb1! 9.e5 a1S#) L:e5 9.Kc1 Lc3 (9.- Lb2+ 10.Kc2=) 10.Kc2 Lb2 (X2') 11.Kb3 Kb1= 10.- Ld2 11.Kd1! (11.Kd3? Kb2 -+) 12.Kb1/Kb2=; (1.- Kb2 2.Sc4+ Kb1 3.Dh1+ Lc1 4.Sa5! a1D 5.Dc1+! 6.Sb3+-); (4.- Le1 4.Kc2 Ld2 5.Kd1! Kb1=); (1.Sd2? ed2 2.Kd2 Kb2 3.Dh3 c4! -+
D63 - (X) 1.Kc8 La6+ 2.Kd8 Lb5 (X') 3.ed3 4.a4! La4 5.Sd5 Td5+ 6.Kc8 Ld7+ 7.Kc7 Le8 8.Kc8 Td7 9.Sc7+ Tc7+ 10.Kc7 Lh5 11.Kc6 c4 12.Kb5 cd3 13.Ka6 ~ 14.e8D+ Le8=
D64 -- 1.Da4! (1.Sc3 Tg5-+; 1.Db3 Dd6 2.ef5 Dg3+ 3.Kf1 Df3:+ 4.Kg1 Dg3+=; 1.Lb2 Db6-+) 1.- Tf3: (1.- Th5 2.Da6+ Da6: 3.ba6+ Ka6: 4.Kf2 Th7: 5.Sc3) 2.Da6+ (2.La3 Dh3 3.Da6+ Ka8 4.Dc6+ Tb7 5.De8+ Tb8 6.Dc6+ Tb7) 2.- Da6: 3.ba6+ Ka8! (X) (3.- Ka6: 4.La3 Th8 5.Sc3 Th7: 6.0-0-0!+-; 4.Lb2? Tbf8!) 4.La3! Tb1:+!! (4.- Th8 5.Sc3 Th7: 6.0-0-0!) 5.Lc1!! (5.Tb1:? Tf1+=) 5.- Tb8 (X') [5.- Tf8 6.h8D Tc1:+ (6.- Th8: 7.Tb1: Th2 8.Ta1!!) 7.Tc1: Th8: 8.Kf2 Kb8 9.Ke3 Th6 10.Kd3: Ta6: 11.Tc2]; 6.Lb2! Tbf8 (6.- Tb2: 7.h8D+-) 7.0-0-0! +-
D65 - A) 1.-
S:e3 (X1) 2.Sf6+! K:g5 3.Se4+ Kg4
(X1') 4.g:f3+! K:f3 5.Tg8 e1D+ 6.Tg1 De2 7.a8D +-
B)1.- Sg3+ 2.Kh2! Sf1+ 3.Kg1! S:e3 (X2) 4.Sf6+! K:g5 5.Se4+ Kg4 (X2') 6.g:f3+ K:f3
(X3) 7.Sg5+! Kg4 8.f3+ Kg3 (X4) 9.Se4+! K:f3 10.Sg5+ Kg3 (X4') 11.Sf3! K:f3
(X3') 12.Le4+ Kg3 13.Th3+! K:h3 14.Kf2 S:c2 15.K:e2! +-, 7.-
L:g5 (X5) 8.Le4+ K:e4 9.f3+ K:f3 (X5') 10.Th3+ Kg4 11.Kf2 S:c2 12.K:e2 Sd4+
13.Kf2 K:h3 14.a8D c2 15.Dc8+! Kh4 16.Dh8+ Kg4 17.D:d4+. 1.- e1D 2.Lf5+ K:f5 3.Tf8+
Kg6 4.L:f4! (4.e:f4? f:g2+!=) S:e3+ 5.Kh2 f:g2 6.Tg8+ Kf5 [6.- Kf7 7.Sd6+ Ke7
(7.- Kf6 8.Lg5+ Ke5 9.Sc4+-) 8.T:g2 S:g2 9.a8D S:f4 10.De8+-]
7.Sg3+ K:f4 8.f:e3+ Kf3 9.Tf8+ Kg4 10.Tf4+ Kg5 11.K:g2 Da1 12.Tf7+-
D66 -- (X) 1.- Td7+ 2.Kf6 Tf7+ 3.Kg5 Tf5+ 4.Kh4 Th5+ 5.Kg3 Th3+ 6.Kf2 Tf3+ 7.Ke1 Tf1+ 8.Kd2 Td1+ 9.Kc3 Td3+ 10.Kb4 Tb3+ 11.Kc5 Tb5+ 12.Kd6 Td5+ 13.Kc7 Td7+ 14.Kb6 T:b7+ 15.Kc5 Tb5+ 16.Kd6 Td5+ 17.Ke7 (X') Td7+ 18.Kf6 Tf7+ 19.Kg5 Tf5+ 20.Kh4 Th5+ 21.Kg3 Th3+ 22.Kf2 Tf3+ 23.Ke1 Tf1+ 24.Kd2 Td1+ 25.Kc3 Td3+ 26.Kb2 Tb3+ 27.Ka1 Tb1+/T:b8 28.D:b1/Te1#
D67 - (X) 1.Th1+! Kg8 2.Th8+ K:h8 3.Th1+ Kg8 4.Th8+ K:h8 (X') 5.Dh1+ Kg8 6.Dh4 Lf6 7.Dc4+ b:c4=!
D68 - (X) 1.Db1? Db8! 1.Ke2! L:g4+ 2.Kd3 L:f5+ 3.Ke2 Lg4+ 4.Kf1 Lh3 (X') 5.Db1! Db8 6.Df5! Db5+ (6.- L:f5 7.Tg1#) 7.D:D Tc8 8.Dh5! +-
D69 -- 1.Df8? e1S! 2.Kg4 Sf2+ 3.Kg5 Sf3+ 4.Kh6 Sg4+ 5.Kh7 Sg5+ 6.Kg8 Sgf6# 1.Ta8+! K:a8 2.Df8+! Ka7 3.Ld6 e1S+ 4.Kg4 Sf2+ 5.Kg5 Sf3+ 6.Kh6 Sg4+ 7.Kh7 Sf6+ 8.Kh8! +-; 2.Dh8+?? Ka7 3.Ld6 e1S+ 4.Kg4 Sf2+ 5.Kg5 Sf3+ 6.Kh6 Sg4+ 7.Kh7 Sgf6+ 8.Kh6 Sg4 =
D70 -- 1.Sc7! T:d2+(X) 2.Ka3!! T:d3+ [2.Kb3 ? Tb2+ 3.Kc4 T:b6 4.f7 Ld6 5.Se8 Le7! 6.Lf6 Tb4+! 7.Kc3 (7.Kd3 ??) Lf8 8.Lg7 (8.Lc3??) Le7 9.Le5 ! T:b7 10.Ld6 h3 11.L:e7 h2 12.f8D h1D 13.Df5+ d5 -+] 3.Ka2 Td2+ (X') 4.Kb3! Tb2+ 5.Kc4 T:b6 (5.- Tb4+ 6.Kd5 h3 7.b8D h2 8.K:e5 h1D 9.Kd1! T:b6+ 10.D:b6+ K:b6 11.Sd5+ Kb5 12.f7 Dh2+ 13.K:d7 Dd2 14.f8D D:d5+ 15.Dd6+-) 6.f7 Ld6 (Y) 7.Se8! La3 (7.Le5!? La3! 8.Lc7 ??) (7.- Le7 8.Lf6! Tb4+ 9.Kd3! Lf8 10.Lc3+-) 8.Sd6! (8.Le5? T:b7 9.Ld6 L:d6 10.S:d6 Tb8 11.Se8 Tb4+ 12.Kd5 Tf4-+) 8.- L:d6(Y') 9.Le5! La3 10.Lc7 +-
D71 -- 1.Kf1! S:h2+ 2.Kg1 Sf3+ 3.gf+! Kh3 4.Kh1 g4 5.Kg1 g3 6.Kh1 g2 7.Kg1= 5.- gf 6.Kh1 Kg4 7.Kh2 Kh5 8.Kh3 Kg5 9.Kh2 Kf6 10.Kh3 =; 1.gf+? K:h3 2.Kh1 g4 3.Kg1 gf 4.Kh1 Kg4-+
D72 - (X) 1.d4+? Kd6 2.Sf7+ Kc7! (2.- Ke7 3.f6+ Ke8 4.Sd6#) 1.Sf7+! K:f5 2.Sh6+ Ke5 3.d4+! Kd6 4.Sf5+! Kc7 5.d6+ Kc6 (5.- Kc8 6.Se7#) 6.d5+ S:d5 7.cb+ K:b5 8.Sd4#
D73 -- 1.g8D [1.g8T? Tac1+ 2.Kd2: Sc4+ 3.Dc4: Tcd1+ 4.Kc3 Tc1+ 5.Kb3 Tb1+ 6.Ka3 Ta1+ 7.Da2 Ta2:+ 8.Ka2: Te8 9.h8D De6+=, 1.h8D Tac1+ 2.Kd2: Sc4+ 3.Dc4: Tcd1+ 4.Kc3 Tc1+ 5.Kb3 (5.Kd4 Tc4:+ 6.Kc4: Te8) 5.- Tb1+ 6.Ka3 Ta1+ 7.Da2 Ta2:+ 8.Ka2: Te8 9.g8D Tg8] 1.- Ka7!! (1.- Tac1+ 2.Kd2: Sc4+ 3.Dgc4) 2.Dc8: (2.h8D d1D 3.Dd4+ Dd4:+ 4.Kd4: Dg4+) 2.- Tac1+ 3.Kd2: (3.Kd4 d1D+ 4.Dd1: Tcd1+ 5.Kc3 Tc1+ 6.Kd4 Tcd1+) 3.- Sc4+ (X) 4.Kd3! (4.Dc4:? Tcd1+ 5.Kc3 Te3+ 6.Kc2 Te2+ 7.De2: Td2+ 8.Kc3 Td3+ 9.Kc4 Td4+ 10.Kc5 Td5+ 11.Kc6 Td6+=) 4.- Se5+ 5.Kd4 Sc6+ 6.Kd5 Se7+ 7.Kd6 Sc8:+ 8.Kd5 Se7+ 9.Kd4 Sc6+ (9.- Th1: 10.b5 Th7: 11.De3 Tc7: 12.b6+-)10.Kd3 Se5+ 11.Kd2 Sc4+ (X') 12.Dc4: Tcd1+ 13.Kc3 (Kc2) Tc1+ 14.Kb3 ( Kb2) (14.Kd4? Tc4:+ 15.Kc4: Th1:!) 14.- Tb1+ 15.Ka3 Ta1+ 16.Da2 Ta2:+ 17.Ka2: Th1: (17.- Te8 18.b5 Kb7 19.b6 Th8 20.Sg3 Th7: 21.Se4) 18.c8T!+- (18.c8D? Ta1=)
D74 - (X1) 1.Sf5+ Kd5: (X2) 2.Lb7+ Kc4 3.Ld5+ Kd5: (X2') 4.Se3+ Kd6 (X1') 5.Ta6+ Ke7 6.Sd5+ Ke8 7.Sf6+ Ke7 8.Sg8:+ Ke8 9.Te6:+ Le7 10.Sf6+ Kf8 11.Sh7:+ Ke8 12.Sf6+ Kf8 13.Kd7 Ld8 14.Sh5 Sg5 15.fg5: Lg5: 16.f4 Lh4 17.Ta6 Kf7 18.Ta7: c4 19.b6 Lf2 20.Ta6 Lb6: 21.Tb6: +-
D75 - (X) 1.Dd1+ !? K:c5 2.Dd4+ K:d4 3.0-0-0+ Kc5! (3.- K:e4 4.e7+-) 4.d7 Th1 5.d8D g1D 6.Dd4+ Kb4 7.c5+ Ka5 8.D:c3+ b4 ! 9.Da1+ Kb5 10.c4+ bc! (e.p.) 11.Db1+ K:c5 -+ 1.Sb3+! K:e4 2.Sc5+ Kd4! (X) (2.- Kf4 3.Sd3+! Kf5 4.D:e3 T:e3 5.Kf2 T:e6 6.d7 Td6 7.Sc5+) 3.Dd1+ Ke5 (4.Sd7+ ? K:e6 5.Sc5+ Kf7 ! 6.Ta7+ Kg6 7.Dd3+ Kh6 8.D:e3+ T:e3 9.Kf2 T:e2+ 10.Kg1 T:c2 11.Sb3 Tb2 12.d7 Tb1+ 13.K:g2 Td1=) 4.Dd4+! K:d4 (X') 5.0-0-0+ K:c5 6.d7 Th1 7.d8D g1D 8.Dd4+ Kb4 9.c5+ Ka5 10.D:c3+ b4 11.Da1+ Kb5 12.c4+ bc (e.p.) 13.Db1+ K:c5 14.Df5+! Kb6 15.T:g1 T:g1+ 16.Kc2 +-
D76 -- 1.c4! a5 (X1) 2.Kc3 (X2) Sd1+ 3.Kd3+ Sb2+ (X3) 4.Kd4 Sa4: (4.- Sd1? 5.Td1: Kb2 6.Kd3#) 5.Kd3+ Sb2+ (X3') 6.Kc3 (X2') Sa4+ (6.- a4 7.Kd4 Sd1 8.Td1: Kb2 9.Kd3#) 7.Kb3+ Sb2 (X1') 8.Ka3: a4 9.Lb2:#
D77 -- 1.Sh4 S:h4 2.L:h4 a5 3.Le7 h4 (X) 4.Lh7 K:a2 5.Lg8+ Kb1 (X') 6.Lb4 a:b4 7.Lb3 b:a3 8.K:d2 a2 9.Kd1 d2 10.Lc2#
D78 - (X) 1.Lb7! L:b7! 2.Ta8! L:a8! (X') 3.Te8 Lb7 4.Ta8! La8! (X'') 5.d7 a2 6.d8=S!~ 7.Se6# ; 5.- Lb7 6.d8D a2,Kg5 7.D:f6,Dg8+ a1D,Kf4 8.Dh6#,Dg7 (9.D:h6#)
D79 -- 1.Lg7 a3 (X) 2.Sg4+ Ke4: 3.Sf6+ Ke5 (X') 4.e4 a2 5.e3 a1D 6.Ld3!! cd [6.- Dh1+ 7.Kg5 (7.Kg4? Dd1#) 7.- Sf7 8.Kg6 Dh6 9.Lh6: 10.Sf4#; 9.- Sh8+ 10.Kg7#; 9.- f1D 10.Lf1:#; 9.- Sg5 10.Lg5#] 7.cd Dh1+ 8.Kg5! Sf7+ (8.- Kg4? Dh1+ 9.Kg5 Dd3: 10.Sg4+ Ke4:#) 9.Kg6 Dh6+ 10.Lh6: Sh8+ 11.Kg7 Sg6 12.d4# 2.Lh8:? Lb7 3.Kg4 Ld5: 4.ed: a2 5.e4 a1D 6.Kf3 Dd1 7.Kg3: Df1 8.Kf3 Dg2: 9.Kg2: f1D+ 10.Kf1:=
D80 -- 1.Kb8! (i) Sd6 2.a8S+! Ka5+ 3.a:b5 Df8+! (ii) 4.Ka7 D:a8+! 5.K:a8 Kb6 6.b4 Sc4! 7.L:c4 (iii) Tf2 (X1) 8.Sdf4! T:f4 (X2) 9.Lf7 T:f7 (iv) 10.Tf3 T:f3 11.Sf4 T:f4 (X2') 12.Tf2 T:f2 (X1') 13.Ld4+-; (i)1.Sef4? Sd6+ 2.Kd8 Tg8-+; 1.Sdf4? Sd6+ 2.Kd7 Tg7 -+; 1.a8D? Sd6+! -+; 1.a8S+? Ka7! (ii) 3.- Tg8+ 4.Ka7 T:a8+ 5.K:a8 Kb6 6.Se(d)f4! +-; (iii) 7.Sg3 T:g3 8.Tg2 (8.L:c4 T:d3! =) 8.- T:g2 9.L:c4 Tf2 10.Sf4 T:f4 11.Tf3 (11.Lf7? Td4!) 11.- Tf8+ 12.T:f8= 8.Sef4? T:f4 9.Lf7 Td4!; (iv) 9.- Td4 (X4) 10.Td3! (v) 10.- T:d3 11.Td2 T:d2 12.Sd4 T:d4 (X4') 13.L:d4+-; 10.Td2? T:d2 11.Td3 T:d3 12.Ld4+ T:d4 (X3') 13.S:d4=
D81 -- (X) 1.De2? Le4! 2.Tf1 L:g6+! 3.K:g6=; 1.Df1? Lf3! 2.Te1 L:g4+! 3.K:g4= 1.Lg2! Lg2: 2.Dh1! (2.a7? Lf3 3.a8D+ La8: 4.Dh1 Lh1: X' 5.Th1??) Lh1: (X'') 3.a7 Lf3 4.a8D+ La8: 5.Th1! Lh1: (X''') 6.Sac1! (Sb4?) Lf3 7.Ta8+ La8: 8.Se2! Le4 9.Sf4 gf4 10.gf4+-; 10.Sc5? fg3! 11.Se4: Lf4! 12.Sg3: Lg3:=; 10.de4? f3!
D82 -- 1.Le7+ (1.L:g7+? Ke8! 2.D:f7+ S:f7 3.L:h6 Da5!) 1.- Kg8 (1.- Ke8 2.D:g7 efD 3.D:f1 L:d5+ 4.K:d6) 2.D:g7+! K:g7 (X) 3.Da1+ Kg8 4.Dg7+!! (4.D:h8+? K:h8 5.Da1+ Tg7! 6.Lf8 e1D+) 4.- K:g7 (X') 5.Da1+ Kg8 6.D:h8+ K:h8 7.K:f7 L:d5+ 8.Kf8 e1D 9.Lf6#
D83 -- 1.Df6! (1.Lf6? Da1) 1.- Tc4+ (1.- Dc2+? 2.Kd8 Dg6??) 2.Kd8 (2.Kd7? Sc5+) 2.- Tc8+ 3.Kc8 Dc2+ 4.Kb8!! 4.- Dg6! 5.Dg6 Sf4 (6.Lf6? g1D!) 6.Df6! Sg6! 7.Df4+! Sf4 8.Lf6! Sd5 9.Ld8! +- (8.- Sg6 9.Sh8 Sh8 10.g6+-)
D84 -- 1.S:g8 S:g8 2.T:g8+ K:g8 (X1) 3.Td8+ Kg7 4.Tg8+ K:g8 (X1') 5.Dd8+ Kg7 6.h6+ K:h6 7.Sg4+ Kh5 8.S:f6+ Kh6 9.Sg4+ Kg7 10.Df6+ Kg8 11.Sh6#; 4.- Kh6 (X2) 5.Sg4+ K:h5 6.Se5+ Kh6 (X2') 7.Dh1#
D85 -- 1.- Da6+! (1.- h2? 2.Da3!/2.Lb4!; 1.- Lh2? 2.Lb4! Da6+ 3.Ke1 De2+ 4.D:e2 f:e2 5.T:d7#) 2.Lc4! (2.K:g1? Df1+! 3.K:f1 h2! 4.Te8+ K:f7 5.T:d7+ K:e8 6.Td8+ K:d8 7.D:b6+ Kc8 8.Dc6+ Tc7 9.Da8+ Kd7 10.Dd5+ Kc8=) 2.- D:c4+ 3.K:g1 Df1+! (3.- h2+ 4.K:h2 Df1 5.Dg5 +-) 4.K:f1 h2! (X) 5.Tf6+ Kg8 6.Tf8+! (6.Te8+? Kh7 7.Th8+ K:h8 8.Dh6+ Kg8 -+) 6.- K:f8 (X') (6.- Kh7 7.Th8+! K:h8 8.Dh6+ Kg8 9.Te8+ Kf7 10.Te7+! K:e7 11.D:g7+ Ke6 12.Dg8+! Ke7 13.Lb4+ d6 14.L:d6+! K:d6 15.Db8+ +-) 7.Lb4+! Kg8 8.Te8+ Kh7 (8.- Kf7 9.Tf8+ +-) 9.Dh6+! (9.Ke1?? h1D+ 10.Kd2 g5 -+) 9.- K:h6 10.Th8+ Th7 11.Lf8#
D86 -- 1.Sf3? T:f3! 2.d:e3!? Tf1+ 3.Kd2 Tf2+ 4.K:c1 d:e3 (X1) 5.g7 L:g7 6.e5 L:e5 7.d4 L:d4 8.c3 L:c3 9.h8D+ L:h8 (X1') 10.Dh7+ Kg1 11.D:h8 Sd3+! 12.Kb1 e2! -+( 13.Kc2+ e1D+ 14.K:d3 Lf1+!-+) 1.d:e3! Tf1+ 2.Kd2 Tf2+ 3.Se2! T:e2 4.K:c1 d:e3 (X3) 5.g7 (i) 5.- L:g7 6.e5 L:e5 7.d4 L:d4 8.c3 L:c3 9.h8D+ L:h8 (X3') 10.Dh7+ Kg11 11.D:h8 Sd3+ 12.Kb1 Le4 13.Dc3! Sb4+ 14.Kc1 Sd3+ 15.Kb1=; i) 5.e5? L:e5 6.d4 L:d4 7.c3 L:c3 8.h8D+ L:h8 (X3')