[Retros] =N double checkmates

[Hirokaz ONODA]

Hi,

a shorter game of [gN##]
 1. Cg1-f3   Ph7-h5     2. Cf3-e5   Ph5-h4     3. Ce5xd7   Ph4-h3    
 4. Cd7xb8   Ph3xg2     5. Cb8-a6   Th8xh2     6. Ca6xc7   Dd8xc7    
 7. Pe2-e4   Dc7-g3     8. Re1-e2   Pe7-e5     9. Pf2-f4   Pg2-g1=C  
double checkmate

 1. Pa2-a4   Cb8-c6     2. Pa4-a5   Cc6-d4     3. Pa5-a6   Cd4xe2    
 4. Pa6xb7   Ce2-d4     5. Ta1xa7   Cd4xc2     6. Dd1xc2   Pd7-d5    
 7. Dc2xc7   Pd5-d4     8. Dc7-b6   Re8-d7     9. Re1-d1   Dd8-e8    
10. Pb7-b8=C 
double checkmate


Now only one vacant room remains.

=N double checkmates, SPG

[bN] 10.b8N# (Hirokaz Onoda, 2007)
[cN] 9.c8N# (Hirokaz Onoda, 2006)
[dN] ---
[eN] 9.e8N# (Paul Raican, 1996)
[fN] 10.f8N# (Noam D. Elkies, 2006)
[gN] 9...g1N# (Hirokaz Onoda, 2007)

[baN] 7.bxa8N# (Hirokaz Onoda, 2006)
[abN] 11...axb1N# (Hirokaz Onoda, 2007)
[cbN] 7.cxb8N# (Hirokaz Onoda, 2007)
[bcN] 10.bxc8N# (Hirokaz Onoda, 2007)
[dcN] 7...dxc1N# (Olli Heimo, 2006)
[cdN] 9.cxd8N# (Hirokaz Onoda, 2007)
[edN] 7.exd8N# (Joerg Varnholt, 1996)
[deN] 10.dxe8N# (Hirokaz Onoda, 2006)
[feN] 8.fxe8N# (Hirokaz Onoda, 2007)
[efN] 7...exf1N# (Hirokaz Onoda, 2007)
[gfN] 9.gxf8N# (Hirokaz Onoda, 2007)
[fgN] 8...fxg1N# (Hirokaz Onoda, 2007)
[hgN] 9...hxg1N# (Hirokaz Onoda, 2007)
[ghN] 8.gxh8N# (Olli Heimo 1996)


Amici Sumus,
Hiro


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