Chess tactic
Mate Puzzle (845)
After the setup move d4, it is Black to move. Find the forcing continuation before checking the solution.
What to look for
Calculate a forcing checkmate sequence.
Solution
17... Qd1+ 18. Qe1 18... Qxe1#The full forcing line from the source position is:
17. d4 17... Qd1+ 18. Qe1 18... Qxe1#
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