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MatPlus.Net Forum Fairies Double step
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(1) Posted by Joost de Heer [Saturday, Aug 21, 2021 12:50]

Double step

Nice article by Frank Richter:

Only double steps, first attempt (someone should be able to improve on this)
(= 7+5 )

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(2) Posted by Frank Richter [Saturday, Aug 21, 2021 15:32]

Thank you, Joost.
I kindly ask NOT to publish here h# with ONLY double pawn moves, as there will be a small addition to the article in next Schwalbe issue (at least, I hope so).
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(3) Posted by James Malcom [Saturday, Aug 21, 2021 22:43]

Thank you for the mention, Frank. I believe this may be my first in Die Schwalbe.
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(4) Posted by Hauke Reddmann [Sunday, Aug 22, 2021 19:30]

(= 6+4 )

Does this v work? (1 p saved)
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(5) Posted by Joost de Heer [Sunday, Aug 22, 2021 19:40]

No: 1. Kb5 2. f4 3. e4#
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(6) Posted by Andrew Buchanan [Monday, Aug 23, 2021 02:36]

But this obvious fix is C+ Popeye
(= 6+4 )
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(7) Posted by Joost de Heer [Monday, Aug 23, 2021 10:01]

Seven white double steps can be done trivially with AlphabeticChess
(= 9+7 )

h#6.5 AlphabeticChess
1... a4 2. Ra4 b4 3. Rb4 c4 4. Rc4 d4 5. Rd4 e4 6. Re4 f4 7. Rf4 h4#
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(8) Posted by Joost de Heer [Sunday, Dec 26, 2021 18:11]

Unfortunately an illegal position (Bf1, although one could argue that the position is illegal in AlphabeticalChess anyway, and that legality isn't required for fairy chess compositions), but 8 double steps by all white pawns.

(= 10+11 )

h#7.5 Alphabetical chess

1. a4 2. Rxa4 b4 3. Rxb4 c4 4. Rxc4 d4 5. Rxd4 e4 6. Rxe4 f4 7. Rxf4 g4 8. Sxg4 h4#

Can be legalized by changing bf1 to 15f7, but I prefer this illegal version.
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MatPlus.Net Forum Fairies Double step