solve this one...

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17th June 2008, 07:42pm

by c_dge
nueva vizcaya Philippines

Member Since: Apr 2008
Member Points: 36

QUOTE

17th June 2008, 07:56pm

by Sunshiny
United States

Member Since: Jan 2008
Member Points: 780

1. Kb5 Rd5+

2. Kb4 Rd4+

3. Kb3 Rd3+

4. Kc2

QUOTE

17th June 2008, 07:59pm

by yumyum
HCMC Vietnam

Member Since: May 2008
Member Points: 6

simple The pieces couldn't be moved though

QUOTE

17th June 2008, 08:06pm

by c_dge
nueva vizcaya Philippines

Member Since: Apr 2008
Member Points: 36

Sunshiny wrote:

1. Kb5 Rd5+

2. Kb4 Rd4+

3. Kb3 Rd3+

4. Kc2

but there is 5.Rd4 c8/Q

6.Rc4+ Qxc4

stale mate...

QUOTE

17th June 2008, 08:16pm

by Sunshiny
United States

Member Since: Jan 2008
Member Points: 780

So get a rook instead of a queen.

4. Kc2 Rd4

5. c8=R Ra4

6. Kb3

QUOTE

17th June 2008, 08:18pm

by c_dge
nueva vizcaya Philippines

Member Since: Apr 2008
Member Points: 36

Sunshiny wrote: So get a rook instead of a queen.

hmmp....your genius...

QUOTE

17th June 2008, 08:20pm

by NM tonydal
United States

Member Since: Oct 2007
Member Points: 4728

4... Rd4 5 c8/R Ra4 6 Kb3. This is all pretty basic stuff (though quite pretty as well of course)--the Saavedra position, known about (or so they tell me) since 1895. Though I must say I'm a little surprised it took that long for everybody to notice that piquant underpromotional possibility.

QUOTE

17th June 2008, 08:28pm

by Sunshiny
United States

Member Since: Jan 2008
Member Points: 780

You're right NM Tonydal, i stopped thinking a little too soon. It's a recently discovered flaw for me that i'll work on fixing.

QUOTE

19th June 2008, 10:21am

by transpositions
United States

Member Since: Jun 2008
Member Points: 170

This is known as the Saavedra position. A Spanish priest in the late 19th century discovered that this position, which was thought to be a draw is a actually a win for White by underpromotion.

There is a nice video of this analyzed by Josh Specht on www.chessvideos.tv

click on endgame lessons http://chess.about.com/gi/dynamic/offsite.htm?zi=1/XJ/Ya&sdn=chess&cdn=hobbies&tm=17&gps=70_975_1276_631&f=22&su=p445.92.150.ip_&tt=14&bt=0&bts=0&zu=http%3A//rlpchessblog.blogspot.com/

QUOTE

19th June 2008, 01:45pm

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