[Retros] Illegal moves by grandmasters

Joost de Heer joost at sanguis.xs4all.nl
Wed May 11 12:49:53 EDT 2011

On 05/11/2011 03:01 PM, A J Mestel wrote:

> I have never for example, seen a problem/study which specified that

> "White has touched his rook and an opponents pawn simultaneously, and so must

> either move the rook or capture the pawn (or both.)"


> Or "White only has 3 seconds for his next 10 moves. Physically, this requires

> that the distance of the moving piece to the clock (the left-hand side of the

> board) must on average be less than 2 squares per move."

Something close:

K. Hannemann
Chess Amateur 1927
Position after 94 plies without capture or pawn move have been played. White wins

1. Rd6! Ke4 2. Rf2 Ke5/Ke3 3. Rf4/Rd4
1...Kc4 2. Rb2 Kc5/Kc3 3. Rb4/Rd4
1...Ke3 2. Rd4 Kf3 3. Re4
1...Ke5 2. Rg4 Kf5 3. Re6
1...Kc5 2. Rg4
1...Kc3 2. Kb5 Kb3 3. Rd3#


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