3/10/2018 - L. Ponce Sala, 1956

tom_crowe

Nice

 

pjlythe
👍🏻
Blaze_32
After the puzzle end Black could play b4. From there, White’s a pawn will be promoted to a queen and Black will take Whites b pawn. At this point, couldn’t Black force a Stalemate by defending his b pawn? White’s queen wouldn’t be able to capture Black’s pawn without being captured herself leaving the game at a stalemate due to insufficient material. She wouldn’t be able to drive the King away from the pawn either. White’s king wouldn’t be able to assist either because if White’s queen doesn’t continue giving checks, Blacks pawn will be able to promote to a queen. Eventually the game will end in a stalemate due to threefold repetition or the 50 move rule.
Rocky64

@Blaze_32 Just go back a page in this thread to post #142 and you'll see BryanCFB's explanation of how White wins after the solution ends.

Preggo_Basashi

Very important for this puzzle is knowing that a bishop's pawn will draw

 

 

BryanCFB
Blaze_32 wrote:
After the puzzle end Black could play b4. From there, White’s a pawn will be promoted to a queen and Black will take Whites b pawn. At this point, couldn’t Black force a Stalemate by defending his b pawn? White’s queen wouldn’t be able to capture Black’s pawn without being captured herself leaving the game at a stalemate due to insufficient material. She wouldn’t be able to drive the King away from the pawn either. White’s king wouldn’t be able to assist either because if White’s queen doesn’t continue giving checks, Blacks pawn will be able to promote to a queen. Eventually the game will end in a stalemate due to threefold repetition or the 50 move rule.

Basically to win white needs to use a combined method threatening to win the pawn, threatening to block the pawn, pinning the pawn and forcing black's king to block the pawn.  And ultimately when black's king blocks the pawn after each cycle in the aforementioned combined method then white's king moves one step closer to participating in the action eventually leading to the pawn's capture and/or checkmate.