13 July 2012

Black or White (6)

Now that we're through with colour changes of each of the five different piece types, we want to have a look at some examples that show a combination of that motif.

In the first two chess problems the changes are done separately, the other two demonstrate consecutive changes.

  1Ralf Kr├Ątschmer  
mpk-Bl├Ątter 12/2011
Commendation
[8/1B2p3/1rN2p2/1p1kB2R/2p1p3/8/5PK1/8]
  h#2(6+7)  
a) Diagram
b) bBe5
c) bRh5
d) bNc6
e) bBb7

  2Rolf Wiehagen  
Christer Jonsson  
Springaren 09/2009
[q7/3P4/2p5/4R3/p2k4/2n2N2/1N6/7K]
  h#2(4+6)  
a) Diagram
b) bPd7
c) bRe5
d) wNc4

  3G. Bakcsi jr.  
Laszlo Zoltan  
Umenie 64, 1996
[8/8/8/3Npk1P/2R5/B2P4/B3P3/1b3K1n]
  h#2(8+4)  
a) Diagram
b) bRc4
c) further bNd5

  4Wiktor J. Abrossimow  
Schachmatnaja Poesija, 2006
3rd Honourable Mention
[5b2/4r3/2b1P3/3nk3/8/KN2N3/5p2/3R4]
  h#2(5+6)  
a) Diagram
b) wBc6
c) further bNe3
d) further wNd5

Solutions
1a) 1. Ke6 Rh7 2. Kd7 Rxe7#
b) 1. Ke6 Nb8 2. Bd6 Bd5#
c) 1. Kc5 Bc3 2. Rd5 Bb4#
d) 1. Ke6 Rh8 2. Kd7 Bc8#
e) 1. e3 Nb4+ 2. Ke4 f3#
2a) 1. Qa5 d8=N 2. Qc3 Nxc6#
b) 1. d5 Re3 2. c5 Nc2#
c) 1. Rb5 d8=Q+ 2. Kc5 Nd3#
d) 1. b1=N Nb2 2. Nc3 Nf3#
3a) 1. Ke6 Rc8 2. Kd7 Nb6#
b) 1. Nf2 Be7 2. Rf4 Ne3#
c) 1. Rg4 Be7 2. Nf4 e4#
4a) 1. Kd6 Re1 2. Rc7 Nf5#
b) 1. Nc7 Bd5 2. Kd6 Nc4#
c) 1. Nf4 Rd5+ 2. Ke4 Nd2#
d) 1. Ke4 Rc1 2. Kd3 Nf4#

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