White Elo Black Elo ECO Yr Res. #         Grefe, J Prochaska, P B30 1973 1-0 23   Watson, J Prochaska, P A36 1975 1-0 49   Prochaska, P Burger, A C98 1975 1-0 33   Rubin, S Prochaska, P B21 1975 1-0 20   Prochaska, P Hammie, R E62 1976 1-0 40   Prochaska, P Tennant, S E66 1976 0-1 53   Plom, M Prochaska, P A65 1977 0-1 38   Popel, S Prochaska, P E60 1977 1-0 34   Prochaska, P Kolbas, W B97 1977 1-0 22   Prochaska, P La Rota, F B15 1977 0-1 32   Wada, A Prochaska, P C83 1981 ½-½ 23   Prochaska, P Menas, B B13 1981 ½-½ 42   Sulman, R 2315 Prochaska, P C77 1981 0-1 27   Prochaska, P Peterson, J B13 1981 ½-½ 34 Page 1
Grefe, John Alan - Prochaska, Peter - Cherry Tree op (2), Monterey Park, 1973 - B30 1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.c3 g6 6.d4 cxd4 7.cxd4 Bg7 8.d5 Qb6 9.Na3 Nd4 10.Nc4 Qc5 11.b4 Qxb4 12.Ba3 Qc3 13.Bb2 Nxf3+ 14.gxf3 Qb4 15.Bxg7 Rg8 16.Rb1 Qc5 17.Bd4 Qc7 18.Be5 Qd8 19.Nd6+ Kf8 20.Qd2 Nf5 21.exf5 gxf5+ 22.Kh1 Qh4 23.Rg1 1-0	Search games Games: 11,649,914 / Last update: 03 Jun 2026   GamePositionEndgames White: Black: Ignore colours ECO: Year: Result: All 1-0 0-1 ½-½ Event: Site: Click below to set up a position to search for Set position Click the button below to select an endgame type
	Game link: https://www.chessbites.com/Games.aspx?d=kCLLAxCC
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