Umnov move
1. In a helpmate a piece of any color moves to a square left by another piece.
2. A piece moves to a square left by a piece of the opposite color, which loses control of that square.
Umnov theme
A piece moves to a square vacated by a piece of the opposite color that maintains control of that square.
Umnov mate
A piece mates on a square left by a piece of the opposite color.
Umnov deferred
A move to a square that was abandoned at least two moves earlier by a piece of the opposite color.
Tura, Waldemar
Szachista, 1995-96
1st-2nd Prize
FIDE Album 1995-97
selfmate in 3 moves
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