# Michael Keller (chess composer)

Michael Keller (born May 31, 1949 in Remscheid ) is a German chess composer . Since 1995 he has been the grand master of chess composition .

Keller has composed more than 750 tasks, mostly three-moves. More than 250 of these were awarded prizes. Many were included on the FIDE albums . For this he was awarded the title of Grand Master of Chess Composition by FIDE in 1995 .

Michael Keller
German chess newspaper, 1983/84
1st prize
 a b c d e f G H 8th 8th 7th 7th 6th 6th 5 5 4th 4th 3 3 2 2 1 1 a b c d e f G H
Mate in 3 moves

Solution:

1. Nc4 (threatens 2. Nxe3 + Rxe3 3. Qxe6 mate). Black can try to move the diagonal a2 – e6 or to cover the e3 square with another piece so that Rb3 does not have to leave the diagonal.
1.… Rd5 2. Bf3 + Nxf3 3. Re4 mate (the white
bishop clears the e4 square)
1.… Bd5 2. Rxg5 + Bxg5 3. Ne5 mate (the white rook clears the e5 square)
1.… Nf1 (covers e3) 2. Td5 (matt threatens Lf3 and Ne5 matt) Rxd5 3. Lf3 matt 2. ... 3. Lxd5 Ne5 matt
1 ... Bb6 second Ld5 (threatens Te4 matt and matt Txg5) Rxd5 3. Te4 matt 2. ... Lxd5 third Txg5 matt
1 ... C1D second De2 + Nf3 3. Qxf3 matt

The first and second variants represent a Grimshaw , named after Walter Grimshaw : Alternating adjustment of two black stones without a sacrificial stone at the intersection of their lines of action. Then a white piece clears the field under sacrifice, on which another white piece then mates. This motif is also known as the white eviction victim .

The third and fourth variant depicts a Nowotny , named after the chess composer Antonin Nowotny : Adjustment of the lines of action of two unsteady black pieces by occupying their intersection with a white sacrificial stone.

The Keller paradox is associated with Keller's name , a topic with the definition: White occupies a field that was previously covered (or covered again) by black.

## literature

Friedrich Chlubna : Michael Keller. A master of chess composition. Self-published, Vienna 1994, ISBN 3-9500310-1-4