Analogy

Similarity between motifs (arrival and departure effects) from one phase to another.

In Helpmate Analyzer, if no more than one motive differs, then the analogy is considered good. The analogy is complete (perfect) if the motives of all moves are the same in both phases.

See also: Orthogonal-diagonal transformation.

Alias: Perfect analogy; Harmony.

Feather, Christopher John

Schach-Aktiv, 1991

h#2 2.1... (5+8)

1.Kd4 Bb8 2.Rc2 Rxd3#
1.Kc4 Rb8 2.Bg1 Bxd3#

Complete analogy.

View in Helpmate Analyzer

FEN: 2R5/B1r5/1b6/2kn4/b3n3/1R1p4/8/3K1B1r

External links:

PDB: P0537254

Caillaud, Michel

Olympic Tourney, 1984

1st Prize

h#2 2.1... (6+9)

1.Qxe8 fxe8=B 2.Sd5 Sd4#
1.Rxg8+ fxg8=S 2.Sf5 Sf4#

Good analogy.

View in Helpmate Analyzer

FEN: 4BbNK/4nP1p/4k2r/2P1n3/q3p1r1/8/4N3/8

External links:

PDB: P0518884
YACPDB: 86592

Feather, Christopher John

Schach-Echo, 1976

h#2 2.1... (5+9)

1.Qxb6 Rc1 2.Kd4 Qxd2#
1.Qxc6 Bg1 2.Kc4 Qb3#

Complete analogy.

View in Helpmate Analyzer

FEN: 5b2/8/1BR5/2qkp3/n3r3/8/P2p3p/K2Q3r

External links:

PDB: P0518021
YACPDB: 88167

Blaustein, Yeshayahu

Israel Ring Tourney, 1967

2nd HM

h#2 2.1... (6+6)

1.Qa6 Qf6 2.Bb5 c4#
1.Qa3 Qg5 2.Rb3 c3#

View in Helpmate Analyzer

FEN: 3QK3/3P4/8/8/4k3/3qrp2/1pP1b3/1B2R3

External links:

PDB: P0536687
YACPDB: 102534

Feather, Christopher John

Moultings 7 , 1991

h#2 2.1... (4+11)

1.Sfg5 Qxe4+ 2.R7d5 Qe8#
1.Seg5 Qxf3+ 2.Qd5 Qc3#

View in Helpmate Analyzer

FEN: 8/1pbr4/1pk5/1p3Q1K/1Bq1n3/5n2/8/1b1r3B

External links:

PDB: P0537347

Jones, Christopher James Austin

Problem-Forum, 2005

6th HM

h#3 2.1... (5+9)

1.Rxg4 Bxd6+ 2.Kf5 Bg3 3.Bb5 Re5#
1.Bxg5 Rxe2+ 2.Kf6 Re8 3.Sb5 Be5#

View in Helpmate Analyzer

FEN: 1B6/4bp2/3n2p1/q3k1P1/5rP1/8/2p1b2K/4R3

External links:

PDB: P1084974
YACPDB: 383862

Rotenberg, Jacques

Loustau, Jean-Marc

Phénix, 1992

2nd Prize

h#3 b) wPb3→f4 (3+14)

a) 1.Sd3 Qe6 2.Re3 Qxa6 3.R8e5 Qxc4#
b) 1.Se3 Qb5 2.Qd3 Qxe8 3.Bc4 Qxe5#

View in Helpmate Analyzer

FEN: 4r3/5p2/b6p/4n2p/2nk3K/pP4p1/4Qp1b/4rq2

External links:

PDB: P1003102
YACPDB: 304759

Moen, Kabe

The Problemist Supplement, 2019

h#3 b) -wPf3 (4+6)

a) 1.Re5 Bh7 2.Sc5 Bd3 3.Sde6 Be4#
b) 1.Bd6 Rf1 2.Sc6 Rf7 3.Sed4 Rf5#

Complete analogy.

View in Helpmate Analyzer

FEN: 6B1/8/4n3/3k4/2pnrb2/5P2/8/K2R4

External links:

PDB: P1375976
YACPDB: 503019

Kirtley, Mark

The Problemist, 1988

1st HM

h#2 2.1... (6+7)

1.Bh7 Bd8 2.Rg6 Re2#
1.Rh6 Rf2 2.Bg6 Bc7#

Good analogy.

View in Helpmate Analyzer

FEN: 2B1r3/6n1/4r3/B1Ppk3/4b2R/7K/2R3p1/8

External links:

PDB: P0540861
YACPDB: 92130

Feather, Christopher John

Moultings 2, 1991

h#2 2.1... (7+8)

1.Kf5 Sd5 2.Rxh6 Sxh6#
1.Ke7 Sd6 2.Bxg8 Sxg8#

Complete analogy.

View in Helpmate Analyzer

FEN: 3r1nB1/3p1N2/r3kN1R/7P/4qP2/4n3/b7/4K3

External links:

PDB: P0537039
YACPDB: 305927

Pachl, Franz

Schach, 1982

h#2 2.1... (9+8)

1.Bxf4+ Kg6 2.Bd6 Re3#
1.Rxe6+ Kg5 2.Re3 Bd6#

View in Helpmate Analyzer

FEN: 6B1/p5PP/r3R2K/p6P/P4B1R/k7/1pp5/1qb5

External links:

PDB: P0504041
YACPDB: 305420

Visserman, Eeltje

Sahs/Shakhmaty (Riga), 1965

2nd Prize

h#2 2.1... (7+8)

1.Bxb2+ Kf7 2.Bf6 Sd5#
1.Rxf4+ Kg7 2.Rf6 Sd1#

View in Helpmate Analyzer

FEN: 4r3/2p4p/5K1p/8/P4N1R/4k3/RN2Prp1/b7

External links:

PDB: P0528453
YACPDB: 303510

Rotenberg, Jacques

Caillaud, Michel

Phénix, 1995

1st Prize

h#2 2.1... (8+6)

1.Rd4 Bxd4 2.Kxd4 Qe4#
1.Bd5 Sxd5 2.Kxd5 Qe6#

View in Helpmate Analyzer

FEN: 8/4K3/2P1b1Q1/4B3/1Pk1rp2/2Np1p2/3P1P2/8

External links:

PDB: P0538940

Feather, Christopher John

Moultings 5, 1991

h#2 2.1... (7+11)

1.Qxg8 Rf3 2.Ke6 Re2#
1.Qxf8 Bc4 2.Kf6 Bc3#

View in Helpmate Analyzer

FEN: 5RBn/K2pNqp1/p2P2pn/4k3/rB6/8/p5R1/7b

External links:

PDB: P0537308
YACPDB: 88171

Pachl, Franz

Schach-Report, 1992

4th Prize

h#2 2.1... (9+8)

1.Bxe5 Sb4 2.Ke3 Bb6#
1.Sxd5 Sf7 2.Kf3 Qf5#

View in Helpmate Analyzer

FEN: 5r2/1BBQR3/8/K2NN3/2Pb1nP1/2p5/4qkp1/1r6

External links:

PDB: P0536694

Medintsev, Vitaly

KoBulChess, 2013 (v)

3rd Prize

h#2 2.1... (6+4)

1.Scb6 Rg4 2.Sb4 Ra1#
1.Sdb6 Rg5 2.Sa5 Rb1#

View in Helpmate Analyzer

FEN: 1B4K1/b7/8/R2n4/1Rn5/7P/4P3/7k

External links:

PDB: P1347736
YACPDB: 411279

Jones, Christopher James Austin

Springaren, 2012

1st Prize

h#3 2.1... (5+7)

1.Kd5 f4 2.Rb6 Rc6 3.Bd4 Bxg2#
1.Kd6 d4 2.Bb7 Bc6 3.Rc7 Rxf6#

View in Helpmate Analyzer

FEN: 2r5/K3n3/2k2r1R/8/6p1/8/3P1Pb1/b6B

External links:

YACPDB: 381921

Shorokhov, Boris

Orbit, 2011

h#2 2.1... (6+12)

1.Sa3 S4c3 2.Rxc3 Sxb4#
1.Ba5 S2c3 2.Sxc3 Sc5#

View in Helpmate Analyzer

FEN: 5r2/Kp6/1P6/3b4/Nbp1n3/1r1kP3/Npn1p3/q1B5