Umnov move

In a helpmate, a piece of either colour moves to a square vacated by another piece of either colour.

See also: FML; Umnov mate; Closed chain of Umnov; Consecutive Umnov; Delayed Umnov.

Zappas, Byron

Probleemblad, 1999

Prize

Example: Umnov move
h#2 3.1... (5+8)

1.Sed3 Se5 2.Sd5 Rc4#
1.Sf3 Be5 2.Sd3 Sd6#
1.Kd4 Rxe5 2.Bd3 Bc5#

Umnov move (black-white) x2
Umnov move (white-white) x3

View in Helpmate Analyzer

FEN: 8/8/1P1B4/2R1nb2/1nN1k3/1K2p3/5b2/3r1q2

External links:

Szabo, Tibor

Magyar Sakkélet, 1983

8th HM

Example: Umnov move
h#2 b) wSa4→c7  (6+13)

a) 1.Sb1+ Sc3 2.Kxc3 Bb2#
b) 1.Sg3+ Se4 2.Kxe4 Rf4#

Sacrificial Umnov move (black-white) x2

View in Helpmate Analyzer

FEN: 8/3p4/p2N1p2/q3r3/N2kn2b/Pbnp4/5Rp1/r1B1K3

External links:

Zalokocky, Roman

Gavriliv, Evgeny

Ulyanovskaya Pravda, 1984

1st Prize

Example: Umnov move
h#2 2.1... (6+10)

1.Sd7 S7f6 2.Rxf6 Sg7#
1.Se8 S5f6 2.Bxf6 Sf8#

Sacrificial Umnov move (black-white) x2

View in Helpmate Analyzer

FEN: 1qr5/4p2N/3pknP1/2p2r1N/2K2Pp1/6P1/8/b7

External links:

Semenenko, Oleksandr

Semenenko, Valery

I. Kavnatsky-100 MT, Problemist Ukrainy, 2011

1st Prize

Example: Umnov move
h#4 b) bRf2→d6  (4+13)

a) 1.Rf7 Sf2 2.Qd7 Sg4 3.Sd6 e4+ 4.Ke6 d5#
b) 1.Sf5 Sg3 2.Se3 Sf5 3.Sc4 e3 4.e6 Se7#

Consecutive Umnov (black-white, rSqSsPkP, 4)
Consecutive Umnov (black-white, sSsSsPpS, 4)

View in Helpmate Analyzer

FEN: 8/4p3/1p5p/p2k3p/3Pn1q1/3p2n1/3rPr2/2K2b1N

External links:

Niemann, John

Feenschach, 1963 (corr.)

2nd Prize

Example: Umnov move
h#3  (5+8)

1.Sd5 Bb6 2.Sf4+ Sd5 3.Sg2+ Sef4#

All white moves are Black-White Umnov moves.

View in Helpmate Analyzer

FEN: 8/1r4n1/kn1q3b/8/3B4/4N2b/3KN2r/5B2

External links:

Caillaud, Michel

Loustau, Jean-Marc

Rotenberg, Jacques

Rex Multiplex, 1983

2nd Prize

Example: Umnov move
h#3  (3+15)

1.Re5 Bd5 2.Re6 Re5+ 3.Qe4 Rf5#

All moves starting from W1 are Umnov moves.

View in Helpmate Analyzer

FEN: r1b4K/n7/2ppB3/3r1q2/3pR1p1/2b1pkp1/4p1p1/8

External links: