[Retros] Task - double check mate - NECESARY

[Renny Bosch]

Hi Roberto and Gianni,

I must be missing something.  Why wouldn't any other Knight move be mate as 
well?

It seems to me there must be some threat against the Queen-only mate --  
perhaps the white Knight should be somewhere else?

Best regards,

Renny Bosch


----- Original Message ----- 
From: <raosorio at fibertel.com.ar>
To: <unlisted-recipients:>; <no To-header on input>
Cc: <Gianchess at aol.com>
Sent: Tuesday, October 03, 2006 4:55 AM
Subject: [Retros] Task - double check mate - NECESARY



>

> Gianni Donatti proposed the following version of the double-check mate PG.

> It's a fact that in the previous one the knight check is not necesary to 

> checkmate

> but it's the way to get the task in 6 moves. I think Gianni's is the 

> shortest extending

> the meaning of the task to 'necesary double-check'.

>

> Hi Roberto -

>

> Here's a version of your double-check pg in which both checks are 

> required.  In a way...

>

> 1. Cg1-f3   Pa7-a5     2. Cf3-e5   Ta8-a6     3. Pf2-f3   Ta6-d6

> 4. Re1-f2   Td6-d3     5. Rf2-g3   Pd7-d6     6. Ce5-d7   Pe7-e5

> 7. Rg3-g4   Cg8-e7     8. Rg4-g5   Pg7-g6     9. Rg5-f6   Ce7-g8

>

>

>

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