[Retros] Shortest Knight Double Checkmates

[Hirokaz ONODA]

Hi,

Knight to the 1st rank 

 1. Pg2-g3   Pe7-e6     2. Ff1-g2   Cg8-e7     3. Fg2xb7   Fc8xb7    
 4. Pd2-d4   Fb7-d5     5. Re1-d2   Pc7-c6     6. Rd2-e3   Dd8-b6    
 7. Re3-f4   Re8-d8     8. Rf4-e5   Pf7-f6     9. Re5-d6   Ce7-c8    

 1. Pb2-b3   Pd7-d6     2. Fc1-b2   Cb8-d7     3. Fb2xg7   Ff8xg7    
 4. Pf2-f3   Fg7-e5     5. Re1-f2   Pf7-f6     6. Rf2-e3   Re8-f7    
 7. Re3-e4   Rf7-g6     8. Re4-d5   Pc7-c6     9. Rd5-e6   Cd7-f8    


Knight to the 4th rank 
 1. Pb2-b3   Pd7-d6     2. Fc1-b2   Cb8-d7     3. Fb2xg7   Ff8xg7    
 4. Pf2-f3   Fg7-e5     5. Re1-f2   Pf7-f6     6. Rf2-e3   Re8-f7    
 7. Re3-e4   Rf7-g6     8. Re4-d5   Pc7-c6     9. Rd5-e6   Cd7-c5    
Fewer catures

Hiro


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