White Elo Black Elo ECO Year Res. #       Datu, Idelfonso Ballmann, Martin 2290 E18 1987 ½-½ 41 Datu, Idelfonso Martin, Benjamin E15 1987 1-0 63 Datu, Idelfonso Oparaugo, Thomas A39 1987 1-0 25 Datu, Idelfonso Petri, Peter D77 1987 ½-½ 34 Datu, Idelfonso Sevillano, Enrico 2315 D34 1987 ½-½ 47 Datu, Idelfonso Wahls, Matthias 2435 B26 1987 0-1 41 Datu, Idelfonso Badilles, Ponciano A34 1990 0-1 34 Datu, Idelfonso Malinao, Venerando A08 1996 1-0 30 Datu, Idelfonso Llavanes, Ronald A05 1996 ½-½ 57 Datu, Idelfonso Donguines, Fernie 2445 B13 1996 ½-½ 9 Datu, Idelfonso Garma, Chito 2400 C00 1996 0-1 59 Datu, Idelfonso De Guzman, Ricardo 2400 A05 1996 1-0 51 Datu, Idelfonso Alidani, Leonardo A04 1997 1-0 22 Datu, Idelfonso Hernaez, Truman A07 1997 ½-½ 54 Page 1
Datu, Idelfonso - Ballmann, Martin (2290) - Wch U20, Baguio City, 1987 E18 1.g3 Nf6 2.Bg2 d5 3.Nf3 b6 4.O-O Bb7 5.d4 e6 6.c4 Be7 7.Nc3 O-O 8.cxd5 exd5 9.Nh4 Re8 10.Nf5 Bf8 11.Bf4 c6 12.Rc1 Na6 13.Re1 Nc7 14.Qd3 Ne6 15.Bd2 c5 16.e3 Rc8 17.h3 g6 18.Nh4 Ne4 19.Nf3 f5 20.Ne2 c4 21.Qc2 b5 22.Ne5 N6c5 23.dxc5 Rxe5 24.Bxe4 fxe4 25.Bc3 Re8 26.b4 cxb3 27.Qxb3 Rxc5 28.Bd4 Rxc1 29.Rxc1 a6 30.Bb2 Bd6 31.Nf4 Be5 32.Rc5 Bxb2 33.Qxb2 Qd6 34.Qc3 Re7 35.Qd4 Kf7 36.Nxd5 Bxd5 37.Rxd5 Qf6 38.Qd2 Kg7 39.Rd6 Re6 40.Rd7+ Re7 41.Rd6 Re6 ½-½	Search games Games: 10658164 / Last update: 23 Jul 2025 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
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