XQ Puzzle 160704

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How did Red ( to move ) force resignation with just one move ?

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1.      R2=6 !  vacating the line for a cannon checkmate.

1.      … R4=8 ( xC )  K5=6  leading to a king-assisted rook checkmate next.

 

 1. … R4-2 ( xR) simply allows the cannon checkmate. 

 

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The FEN for this poistion is : 

2b1ka3/4a4/4b4/2c1C3p/4P4/1pP2NP2/7RP/B8/3r3C1/1c2KAB2 w - - 0 1

Check if your XQ software allows the pasting of FEN positions.