Chess Board
[ECO code C52]
EVANS GAMBIT - "Evergreen Game" (Var.)
Black's King on Q2(d7) returns to K1(e8) [else he loses by 24..K-B3, 25.B-Q7++mate]. Black still threatens 25..QxKtP++mate but is unable to act.
White's KB5(f5) Bishop to Q7(d7) wins - a checkmate by two bishops, a pawn and a rook.
     White  Black	 White  Black
 17. Kt-B6!!ch PxKt  22. R-Q8! ch KtxR
 18. PxP    R-Kt1   23. Q-Q7!ch KxQ fcd
 19. QR-Q1!! QxKt    24. B-KB5 dch K-K1
 20. RxP! ch K-Q1    25. B-Q7 mate
 21. RxQP! ch K-B1
Checkmate: Undo or Jump or Clear