1. P-K4 P-K4 2. B-B4 P-R4 3. Q-B3 P-R4 4. QxP mate:

That’s a pretty colorless chess game, but Mike Keith points out that the game score makes an alphametic:

P-K4 + P-K4 + B-B4 + P-R4 + Q-B3 + P-R4 + QxP = IWIN

Replace each letter and symbol (-, x) with a digit, leaving the numbers as they are, to produce a valid equation.