| Jul 14, 2026 | Puittinen | 0–1 | Koykka | Round 3: Puittinen, Mika - Koykka, Pekka | Pirc Defense | |
| Mar 1, 2026 | Puittinen | ½–½ | Lehtinen | new tournament description | Sicilian Defense: Alapin Variation | |
| Mar 1, 2026 | Pelander | 1–0 | Puittinen | new tournament description | French Defense: Advance Variation, Wade Variation | |
| Feb 28, 2026 | Irjala | ½–½ | Puittinen | new tournament description | French Defense: Exchange Variation | |
| Feb 28, 2026 | Puittinen | 1–0 | Hynna | new tournament description | Sicilian Defense: Alapin Variation | |
| Feb 27, 2026 | Hakulinen | 1–0 | Puittinen | new tournament description | English Opening: Caro-Kann Defensive System | |
| Feb 27, 2026 | Puittinen | 0–1 | Reunanen | new tournament description | Sicilian Defense: Alapin Variation | |
| Feb 24, 2026 | Sipila | 1–0 | Puittinen | new tournament description | French Defense: Exchange Variation, Monte Carlo Variation | |
| Oct 4, 2025 | Puittinen | 0–1 | Kniest | European individual senior chess championship 2025 - Open 50+, Rabac, Croatia | Caro-Kann Defense: Panov Attack, Modern Defense | |
| Oct 3, 2025 | Minnican | ½–½ | Puittinen | European individual senior chess championship 2025 - Open 50+, Rabac, Croatia | Queen's Pawn Game: London System | |
| Sep 27, 2025 | Fercec | 1–0 | Puittinen | European individual senior chess championship 2025 - Open 50+, Rabac, Croatia | French Defense: Tarrasch Variation, Chistyakov Defense | |
| Jul 20, 2025 | Puittinen | ½–½ | Binham | Round 9: Puittinen, Mika - Binham, Timothy F. | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Jul 17, 2025 | Kulaots | 1–0 | Puittinen | Round 5: Kulaots, Kaido - Puittinen, Mika | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jul 15, 2025 | Akesson | ½–½ | Puittinen | Round 3: Akesson, Ralf - Puittinen, Mika | Slav Defense: Quiet Variation | |
| Jul 14, 2025 | Puittinen | * | Kaunonen | Round 1: Puittinen, Mika - Kaunonen, Jouni | ? | |