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KPK
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==KPK is won==
* Stronger king defends '''all''' [[Stop squareSquare|stop]] and [[Pawn Spans#StopandDistantStop|telestop(s)]], including the [[Promotion Square|promotion square]] up to three squares. With defender to move, one has to consider whether the pawn can be captured, since defended stop square does not necessarily imply the pawn is defended as well. Additionally, there is a [[Stalemate|stalemate]] [https://en.wikipedia.org/wiki/Key_square#An_exception exception] with the knight pawn.
* Defending king is (leaves after moving) outside the [[Rule of the Square#TheSquareofthePawn|square of the pawn]] <ref>[[King Pattern#SetwiseRuleoftheSquare|Set-wise Rule of the Square]] with [[Bitboards]]</ref>
: if the own king blocks the [[Pawn Spans|frontspan]], it is still won. However the defending king may further reach the "square of the pawn" due to the extra [[Tempo|tempo]] and one needs to apply some more rules to avoid knowledge holes in that cases.
