Echo mates

A pair of mates in which the pieces involved are located on same places in relation to each other, except for the possible rotation, shift and mirroring of position.

See also: Chameleon echo-mates.

Paliulionis, Viktoras

3rd Maroc Echecs, 2013

2nd HM

Example: Echo mates
h#2.5 4.1... (4+2)

1...Rd5 2.Be3 Rc5+ 3.Kd4 Sb3#
1...Re3 2.Kd5 Bb3+ 3.Kd4 Sc2#
1...Ba4 2.Bb6 Rd4+ 3.Kc5 Sb3#
1...Ra3 2.Kb5 Bd3+ 3.Kb4 Sc2#

Four model echo mates. The echo type depends on the order in witch the solutions are listed.

I-II: Echo mates (mirrored diagonally, 0, 0)
II-III: Echo mates (shifted, 1, 1)
III-IV: Echo mates (mirrored vertically, 1, 1)
IV-I: Echo mates (rotated 90, 2, 0)

View in Helpmate Analyzer

FEN: 8/8/8/2b5/2k5/3R4/2B5/N6K

External links:

Mintz, Yaakov

Ideal-Mate Review, 1985

1st Prize

Example: Echo mates
h#4 5.1... (2+5)

1.Rb5+ Kc2 2.Bd5 Sb6 3.Kc5 Kc3 4.Qc6 Sa4#
1.Re5+ Ka4 2.Kd5 Ka5 3.Qc3+ Kb5 4.Qd4 Sf6#
1.Qc7 Sc5 2.Bd7 Sb7 3.Rb5+ Kc4 4.Rb6 Sa5#
1.Bc5 Ka4 2.Rd6 Ka5 3.Qc7+ Ka6 4.Bd5 Se5#
1.Be7 Sf6 2.Rd7+ Kc3 3.Kd6+ Kd4 4.Qc6 Se8#

Ideal echo mates (3 + 2).

View in Helpmate Analyzer

FEN: 2q5/3N4/2kbb3/3r4/8/1K6/8/8

External links: