Puzzle of the day

Discussion of anything and everything relating to chess playing software and machines.

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Nordlandia
Posts: 2821
Joined: Fri Sep 25, 2015 9:38 pm
Location: Sortland, Norway

Puzzle of the day

Post by Nordlandia »

White to move and win 🙂
G. Popov | 17th/18th place | Russian team championship 2012
EG | No. 220 | April 2020 | Page 125

[d]8/8/2P2B2/1p1p4/p1kP1r1p/b2p3p/1pNP3p/1K5N w - - 0 1
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Puzzle of the day

Post by zullil »

Nordlandia wrote: Sun Jun 14, 2020 11:15 am White to move and win 🙂
G. Popov | 17th/18th place | Russian team championship 2012
EG | No. 220 | April 2020 | Page 125

[d]8/8/2P2B2/1p1p4/p1kP1r1p/b2p3p/1pNP3p/1K5N w - - 0 1
Did you edit your original post? My computer searched this position:

[d]8/2P5/5B2/3p4/pp1P1r1p/bk1pN2p/1p1P3p/1K5N w - - 0 2
Norm Pollock
Posts: 1056
Joined: Thu Mar 09, 2006 4:15 pm
Location: Long Island, NY, USA

Re: Puzzle of the day

Post by Norm Pollock »

The 2nd position is 2 moves down from the first position.

1. Nc2-e3+ Kc4-b3 2. c6-c7 b5-b4

Black made a fortress so that if White promotes to a Queen it is a stalemate if 3. R-f1+ Nxf1 is stalemate. (3. Qc1 loses).

White has to do an underpromotion - bishop which will try to get to checkmate at d1.
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