CLICK!

Welcome to Marek´s 1.b4 world!

GET MY 1.b4 DATABASE More than 125000 richly annotated games and lines Click here for more info.

Some recent games played by Aspasio Benassi of Italy

(new games added 2013-04-09)

Some recent games played by Henryk Buczinski of Poland

(new games added 2013-02-14)

Some recent games played by Bill Wall of United States

(new games added 2013-01-02)

Some recent games played by Frederic Fournier of France

(new games added 2012-12-27)

Contact marek@algonet.se

2409 false games! Click here to check it! Maybe you'll find your own games being forged!

Ulrich HASLER
of Switzerland

...exploring Mongolia.

(2013-12-01)
(All annotations below by Fritz)
(Games' source: Marek's 1.b4 database)





Van Esbroeck,Dirk – Hasler,Ulrich
CiF, 1991
1.b4 a5 2.b5= b6 3.a4 Bb7 4.Bb2 d5 5.e3 Nd7 6.Nf3 e6 7.c4 Ngf6 8.Be2 
   (8.Nc3 Bd6=) 
8...Be7 
   (8...dc4 9.Bc4 Be7 10.0–0=) 
9.0–0 0–0 10.d4 Rc8 
   (10...dc4 11.Bc4 Rc8 12.Nc3=) 
11.Nbd2 
   (11.Ba3 dc4 12.Bc4 c5=) 
11...c6 12.Qb3 c5 13.Rac1 
   (13.Rad1 cd4 14.Bd4 Nc5=) 
13...cd4 14.ed4 
   (14.Bd4 Nc5 15.Qd1 Nfe4=) 
14...Re8 15.Rfe1 Ba8 
   (15...dc4 16.Nc4 Nd5 17.Nce5=) 
16.Bd3 
   (16.Ba3 Ba3 17.Qa3 dc4 18.Nc4 Bd5=) 
16...Bb7 
   (16...dc4 17.Rc4 Rc4 18.Qc4+=) 
17.Ne5= Ne5 
   (17...dc4 18.Ndc4 Bd5 19.Ba3=) 
18.de5 Nd7 
   (18...dc4 19.Nc4 Qd5 20.Bf1+/-) 
19.Bd4 
   (19.Qc2 h6+=) 
19...Nc5= 20.Bc5 
   (20.Qc2 Nd3 21.Qd3 Bb4=) 
20...Bc5+= 
   (worse is 20...bc5 21.Qc2+=) 
21.Nf3 dc4 22.Bc4 
   (worse is 22.Rc4 Bd5-/+) 
22...Qe7 23.Red1 h6 
   (23...Red8 24.Rd8 Rd8 25.Rd1+=) 
24.Rd2 Red8 25.Rcd1 Rd2 26.Rd2 Bf3 27.Qf3 Bf2 28.Qf2 
   (28.Rf2 Rc4) 
28...Rc4 29.Qb6 
   (29.Rd1!?+=) 
29...Rc1-/+ 30.Kf2 Qh4 31.Ke3 Rc3 
   (31...Qg5 32.Kd3 Qf5 33.Kd4 Qf4 34.Kd3 Qc4 35.Ke3 Qc3 36.Ke2 Qe5 
   37.Qe3 Re1 38.Ke1 Qe3 39.Kd1–+) 
32.Ke2-/+ Qe4 33.Kf2 Qf4 34.Ke2 Qe5 35.Kf2 
   (35.Kd1!? Qh5 36.Re2 Rd3 37.Ke1 Qh4 38.g3 Qa4 39.Kf2–+) 
Qh2 
   (35...Qh2 36.Qd4 Rc8–+) 
0–1



Hasler,Ulrich – Rotter,W
corr ICCF, 1976
1.b4 a5 2.b5= Nf6 3.Bb2 d6 4.e3 e5 5.c4 Be6 6.d3 
   (6.Nf3 Be7=) 
6...Nbd7 
   (6...c6 7.Nf3=) 
7.Nf3 h6 
   (7...Be7 8.Be2=) 
8.Be2 e4 
   (8...Be7!?=) 
9.de4+= Ne4 10.0–0 Ndf6 
   (10...Nb6 11.Qc2 Nc5 12.Nd4+=) 
11.Nbd2 
   (11.Nd4 Bd7+/-) 
11...Nc5 
   (11...Nd2 12.Qd2 Be7 13.Nd4+=) 
12.Nd4+/- Bd7 13.Bf3 
   (13.N4b3 Nb3 14.ab3 Be7+/-) 
13...Be7 
   (13...a4 14.Ne2+=) 
14.N4b3+/- Nb3 15.Nb3 
   (15.ab3 d5+/-) 
15...Ra7 
   (15...a4 16.Nd2 Bc8 17.Bd4+=) 
16.Re1 
   (16.Bc3 a4 17.Na5 Qb8+/-) 
16...0–0 
   (16...a4 17.Nd2+=) 
17.e4 
   (17.Bd4 b6+/-) 
17...Be6 18.Nd2 
   (18.Qd3 Ra8+=) 
18...Bc4?? 
   (better is 18...Nd7=) 
19.Nc4+– 1–0



Dommaschk,Jens – Hasler,Ulrich
corr, 1992
1.b4 a5 2.b5 Nf6 3.Bb2 d6 4.f4 e5 5.fe5 de5 6.Be5 Ng4 7.Bg3 Qf6 8.c3 Bd6 
Do you see the mate threat? 9.Nf3 
   (better is 9.Nh3+=) 
9...0–0?? 
   (better is 9...Bg3 10.hg3 Qd6–+) 
10.Bd6+= Qd6 11.e3 Re8 
   (11...Be6 12.Be2+=) 
12.Be2 Nd7 
   (12...Bf5 13.Nd4 Bb1 14.Qb1+/-) 
13.Qc2 Nc5 14.Ng5 
   (14.0–0 Be6+=) 
14...g6= 15.Bg4 
   (15.Nf3 Bf5 16.Qd1 Be4+=) 
15...Bg4 
   (better is 15...Nd3!? 16.Ke2 Bg4 17.Nf3 Rad8+=) 
16.0–0+= f6 17.Nf3 Nd3 
   (17...Bf5 18.Qb2=) 
18.c4 
   (18.Nd4 Ne5+/-) 
18...Bf5 
   (18...Bf3!? 19.gf3 f5=) 
19.Nd4+= Be4 20.Nc3 Nc5 
   (20...f5!?+=) 
21.Ne4+/- Re4 22.Rf3?? 
   (22.a3 a4+/-) 
22...Rae8?? 
   (better is 22...Rd4 23.Rf6 Rd2 24.Rd6 Rc2–+) 
23.Raf1+/- f5 24.Rf4 R8e7 25.Nf5 
   (25.a3!?+/-) 
25...gf5+= 26.Rf5 R4e6?? 
   (26...Nd7 27.c5 Qe6 28.c6 bc6 
     A) worse is 29.Qc6 Qc6 (29...Qa2?? 30.Rg5 Kh8 31.Rf8 Nf8 32.Qf6 Rg7 
      33.Qg7) 30.bc6 Ne5+=;
     B) 29.bc6+/-) 
27.Qc3?? 
   (better is 27.Rd5 Ne4 28.Rd6 Nd6 29.c5+–) 
27...Re8+/- 28.R1f3 
   (better is 28.Rf7 Rg6 29.d4+=) 
28...Ne4+= Exerts pressure on the backward pawn. Black terminates the 
opponent with stron 29.Qa5 Nd2 30.Rg3 Rg6 Black threatens strongly 
Qd3 31.Rg6 hg6 32.Rd5 Nc4 33.Rd6 Na5 34.Rg6 Kh8 35.Rg3 Nc4 36.Kf2 
   (better is 36.Rh3!? Kg7 37.Rg3 Kf6 38.Rf3 Ke6 39.h4+=) 
36...Ra8-/+ 37.a4 Ra4 38.Rg4 
   (better is 38.Rh3!? Kg7 39.Rh5-/+) 
Ra2–+ 
   (38...Ra2 39.Kg3 Ne3–+) 
0–1



Hasler,Ueli (1710) – Tortoza,Carlos
CiF, 2006
1.b4 b5 2.Bb2 Nc6 3.a3 e5 
   (3...f6 4.e4 e5 5.Bb5 Bb7 6.Qh5 g6 7.Qd1 a6 8.Bc4 Nge7 9.Nf3 Bh6 
   10.0–0 d5 11.ed5 Nd4 12.Nd4 ed4 13.Bd4 Bg5 14.Qe2 0–0 15.d6 Nd5 16.Qe6 
   Kg7 17.Bd5 Bd5 18.Qd5 mic (2100)–valerypavlovich (2100)/
   net–chess.com 2008/1–0 (43); 
   3...Bb7 4.e3 e5 5.Bb5 a6 6.Be2 Nf6 7.Nf3 d6 8.0–0 Be7 9.d4 e4 10.Nfd2 
   d5 11.c4 Nb8 12.c5 0–0 13.a4 c6 14.Nc3 a5 15.b5 Nbd7 16.Rb1 Rb8 17.Qc1 
   Ne8 18.Nb3 Clay56–WillForkU/ChessWorld.net 2009/1–0 (32)) 
4.d4N 
   (4.e3 d6 5.Bb5 (5.Nf3 g6 6.d4 Bg7 7.de5 de5 8.Qd8 Nd8 9.Ne5 Nf6 
   10.Nd2 0–0 11.Bb5 Ne6 12.Rb1 Rd8 13.Ndf3 Bb7 14.0–0 Ne4 15.Bc6 Bc6 
   16.Nc6 Rd7 17.Bg7 Ng7 18.Nfe5 Nd2 19.Nd7 Nb1 valpa–Idris/
   playchess.de 2003/1–0 (32)) 5...a6 6.Bc6 Bd7 7.Ba8 Qa8 8.f3 Nf6 
   9.Ne2 Be7 10.0–0 0–0 11.d4 a5 12.de5 de5 13.Be5 Qd5 14.ba5 Qa5 15.Bc3 
   Qh5 16.Bf6 1–0 valpa–Idris/playchess.de 2003; 
   4.Nf3 g5 5.Ne5 Qf6 6.d4 d6 7.Nc6 Bb7 8.Na5 d5 9.Nb7 Ne7 10.e3 Qb6 
   11.Nc5 0–0–0 12.Qh5 Qg6 13.Qg6 fg6 14.Bb5 c6 15.Ba6 Kb8 16.Ne6 Bh6 
   17.Nd8 Rd8 18.0–0 Kc7 Maec,M–Dammer,A/remoteschach.de 2003/1–0 (36); 
   4.e4 Rb8=) 
4...Bd6 
   (4...ed4 5.Nf3=) 
5.de5 
   (5.d5 Nce7+=) 
5...Be5= 6.Be5 Ne5 7.Qd5 Nc6 8.Qb5 Nd4 9.Qe5 Ne6 10.e3 Nf6 11.Nf3 0–0 
12.Be2 Bb7 13.0–0 Ng4 14.Qc3 d6 15.Nd4 
   (15.Nbd2 Qe7+/-) 
15...Ne5 16.f4 Nd4 17.Qd4 c5 
   (17...Nd7!?+/-) 
18.bc5+– Nc6 19.Qc3 dc5 20.Qc5 Qf6 
   (20...Rc8 21.Bd3+–) 
21.Nd2 Ne7 22.Bf3 
   (22.Rab1!? Bc6+–) 
22...Rfc8+/- 23.Qb4 
   (better is 23.Qd4 Qd4 24.ed4 Rc2 25.Bb7+/-) 
23...Nc6?? 
   (better is 23...Bf3 24.Nf3 Rc2+/-) 
24.Qb7+– Rab8 25.Qa6 h6 
   (25...Qe6 26.Rae1+–) 
26.Bc6 
   (26.Rab1 Qd8 27.Nc4 Nd4+–) 
26...Rc6 27.Qd3 
   (27.Qa7 Rd8 28.Rad1 Rc2+–) 
27...Rb2 
   (27...Rd8 28.Qe2 Rc2 29.Rad1+–) 
28.Rfc1 
   (better is 28.Nc4 Rb8 29.Rfd1 Qe6+–) 
28...Rbc2 29.Rc2 
   (29.Rd1 R6c3 30.Qe4 Qe6 31.Qe6 fe6+–) 
29...Qa1 30.Kf2 Rb6 
   (30...Rc2 31.Qc2 Qa3 32.Qc8 Kh7+–) 
31.Rc8# 1–0



de Visser,Arno – Hasler,Ulrich
corr ICCF TT, 2002
1.b4 c6 2.c4 e5 3.Bb2 Bb4 4.Be5 Nf6 5.Nf3 0–0 6.e3 d5 7.Qc2 Nbd7 8.Bb2 
dc4 9.Bc4 h6 10.0–0 b5 
   (10...Nb6 11.Bb3=) 
11.Be2+= Bb7 12.d4 Nd5 13.Nbd2 
   (13.Nc3 Bc3 14.Bc3 Nc3 15.Qc3 c5+=) 
13...Bd2 
   (13...a6 14.a3 Be7 15.Nb3+=) 
14.Qd2 Re8 15.Bd3 N7f6 16.a3 Rc8 17.Rac1 Ne4 18.Qc2 Nef6 19.Ne5 Nb6 20.e4 
   (20.Rfe1 Nbd7+/-) 
20...Re7 21.f4 Rec7 22.Qe2 a6 23.Nf3 
   (23.Ng4 Nfd7+=) 
23...c5 24.e5 Nfd5 25.f5 
   (25.Bf5 Nf4 26.Qf2 Na4+=) 
25...f6 
   (better is 25...Nf4!? 26.Qd2 Nd3 27.Qd3 Nc4-/+) 
26.Bb1 
   (26.Be4 Na4 27.Bd5 Qd5=) 
26...c4 27.Rfd1 
   (27.Rce1!?=) 
Qf8 
   (27...Qf8 28.Nh4 c3+=; 
   27...Qe7 28.Nh4+=) 
0–1



Valverde,Mario (1995) – Hasler,Ueli
CiF, 2006
1.b4 c6 2.Nf3 d5 3.e3 e6 4.Bb2 Nf6 5.b5 Be7 6.Be2 0–0 7.0–0 Nbd7 
   (7...cb5 8.Bb5 Nc6 9.a3+=) 
8.c4 Ne8 
   (8...cb5 9.cb5 a6 10.Nc3=) 
9.bc6 bc6 10.Qc2 Bf6 
   (10...Nd6 11.Na3=) 
11.d4+= Rb8 
   (11...Ba6 12.Nbd2+=) 
12.Nbd2 
   (12.Ba3 Be7+=) 
12...h6 
   (12...Be7!?+=) 
13.Ba3+/- White prepares the advance c5 13...Be7 14.Be7 Qe7 15.Rfb1 Nd6 
16.Rb8 Nb8 17.c5 
   (17.Rb1 Ba6+/-) 
17...Ne8 
   (17...Nb5 18.Ne5+/-) 
18.Rb1 Nd7 
   (better is 18...Qc7!?+/-) 
19.Qa4+– Ndf6 
   (19...e5 20.Qc6 Nef6 21.Ba6 Ba6 22.Qa6+–) 
20.Ne5 Ne4 
   (20...Qc7 21.Qc6 Qa5 22.Rd1+–) 
21.Ne4 de4 22.Qc6 Nf6 23.Rb8 Qd8 
   (23...Bd7 24.Rb7 Rd8+–) 
24.Ba6 Qa5 
   (24...Nd7 25.Rc8 (25.Qc8?! Nb8 26.Qd8 Rd8+–; 25.Bc8? Nb8 26.Nf7 Qc8 
   27.Qc8 Rc8–+) 25...Ne5 26.Qe4+–) 
25.Rc8 Qe1 
   (25...Rc8 26.Qc8 Kh7+–) 
26.Bf1 Qa5 27.Nc4 Qa2 28.Rf8 
   (28.Rf8 Kf8 29.Qc8 Ne8 30.Nd6+–) 
1–0



Zillmer,Jim – Hasler,Ueli
corr or01–013, 2001
1.b4 c6 2.Bb2 Qb6 3.a3 a5 4.c4 ab4 5.c5 Qc7 6.ab4 Ra1 7.Ba1 Nf6 8.e3 d5 
   (8...d6 9.d4=) 
9.b5 
   (9.Nf3 Nbd7=) 
9...cb5 10.Bb5 Bd7 11.Bd7 Nfd7 12.d4 e6 13.Nc3 Be7 14.Nf3 0–0 15.0–0 b6 
16.cb6 Qb6 17.Qe2 Nc6 18.Rb1 Qc7 19.Nb5 Qd8 
   (19...Rb8 20.Bc3 Qc8 21.Qd1+=) 
20.Bc3 Nf6 21.Ne5 Ne5 22.de5 Nd7 
   (22...Ne4 23.Bd4=) 
23.e4 de4 24.Rd1 Qc8 25.Qe4 Rd8 26.Qe1 Nb6 27.Nd6 Bd6 28.ed6 Nd5 29.Be5 
h6 30.Rc1 Qb7 31.Qe4 Qd7 32.Rc5 f5 
   (32...f6!? 33.Bg3 f5=) 
33.Qb1 Rc8 34.Rc8 Qc8 35.Qa1 Qd7 36.h4 Nb6 
   (36...Kf7 37.f4+=) 
37.Qd4 Nc8 
   (37...Nd5 38.h5+/-) 
38.Qc4 Nd6? 
   (better is 38...g5!?+/-) 
39.Bd6?? 
   (better is 39.Qd4+–) 
Qd6-/+ 0–1



Hasler,Ueli (1710) – Tortoza,Carlos
CiF, 2006
1.b4 d5 2.Bb2 d4 3.d3 e5 4.a3 Nf6 
   (4...c5 5.c3 b6 6.cd4 ed4 7.Nf3 Nf6 8.g3 Nc6 9.b5 Na5 10.Nbd2 Be6 
   11.Bg2 Rc8 12.0–0 Nd5 13.e3 de3 14.Nc4 ef2 15.Kf2 Nc4 16.dc4 Nf6 
   17.Qc2 Be7 18.Ne5 Qc7 19.Bc6 mic (2105)–deaf (2205)/net–chess.com 
   2007/1–0) 
5.c3 c5 
   (5...dc3 6.Nc3 Bd7 7.Nf3 Nc6 8.Ne4 Ne4 9.de4 Bd6 10.b5 Na5 11.Qa4 b6 
   12.Ne5 Be5 13.Be5 f6 14.Bc3 0–0 15.e3 Qe8 16.Ba5 ba5 17.Rc1 a6 18.Qb3 
   Be6 19.Bc4 Bc4 20.Qc4 marre–jodwipe/internet 2010/1–0) 
6.Nf3N 
   (6.cd4 cd4 7.Nf3 Bd6 8.Nbd2 b5 9.Ne4 Ne4 10.de4 0–0 11.g3 Nd7 12.Bg2 
   Bb7 13.Nd2 f5 14.f3 f4 15.Nf1 Qg5 16.Bc1 Qh5 17.h4 Rf7 18.g4 Qg6 19.h5 
   Qg5 20.Ng3 Bc8 maxum–acB/Live Game Caissa's Web 2004 (54)) 
6...Nbd7 7.cd4 
   (7.Nbd2 dc3 8.Bc3 Be7=) 
7...cd4 8.Qa4 
   (better is 8.Nbd2!?=) 
8...Bd6-/+ 9.e3 
   (9.Nbd2 0–0-/+) 
9...de3 
   (9...0–0 10.ed4 ed4 11.Be2-/+) 
10.fe3 0–0 11.Be2? 
   (11.Nc3!?-/+) 
11...Nb6 
   (better is 11...Ng4 12.Bc1 a5–+) 
12.Qc2? 
   (better is 12.Qa5 Ng4 13.0–0–+) 
12...Bg4?? 
   (12...Nbd5 13.Qd2 Ng4–+) 
13.Ne5 
   (13.Nc3 Rc8 14.Qd2 Nbd5 15.Nd5 Nd5-/+) 
13...Be2 
   (13...Rc8 14.Nc4 Nfd5 15.Bg4 Ne3 16.Qe2 Nbc4 17.Bc8–+ (17.dc4?? Qh4 
   18.Kd2 Nc4 19.Kc2 Rfe8–+)) 
14.Qe2-/+ 
   (14.Ke2?? Be5 15.Be5 Qd5–+) 
14...Nbd5 
   (better is 14...Re8 15.d4 Na4-/+) 
15.0–0 Qb6 
   (better is 15...Qc7!? 16.Rc1 Qe7+=) 
16.Nc4+/- Nf4?? 
   (better is 16...Qc7 17.Nd6 Qd6+/-) 
17.Qd2 
   (better is 17.Rf4 Qc7 18.Nd6 Qd6 19.Rf6+–) 
17...Qc7 18.ef4 b5 19.Nd6 Qd6 20.Nc3 Qb6 
   (20...Rad8 21.Rae1+–) 
21.Kh1 Rae8 
   (21...Rfe8 22.Rae1+–) 
22.Rae1 Rd8 23.Qc2 a5 
   (23...Rc8 24.Qb3+–) 
24.Re5 
   (24.ba5 Qa5 25.Re5 Qc7+–) 
24...Rc8 
   (24...ab4 25.ab4 Qd6 26.Rg5 Qd3 27.Qd3 Rd3 28.Ne4+–) 
25.Qd2 
   (better is 25.ba5 Qa5 26.Qb3 h6+–) 
25...a4 
   (25...ab4 26.ab4 h6 27.Rb5+–) 
26.Rb5 Qa7 
   (26...Qc6 27.Rg5 Rfd8 28.Na4+–) 
27.Ra5 Qb7 28.Ra4 
   (28.Na4 Nd7+–) 
28...Rfe8 29.Re1 
   (29.b5 h5+–) 
29...h6 
   (29...Qd7 30.Re8 Re8 31.h3+–) 
30.h3 Re7 
   (30...Re1 31.Qe1 Qd7 32.Qg3+–) 
31.Re7 Qc6 
   (31...Qe7 32.b5 Nh5+–) 
32.Raa7 Rf8 33.Ne4 Nh5 34.Kh2 Qg6 35.g4 Nf6 36.Nf6 gf6 37.Qc3 Kg7 
   (37...Qg7 38.Ra6 Kh8 39.Rf6 Kh7 40.Rh6 Qh6 41.Rf7 Kg8 42.Rg7 Kh8 
   43.Rg6 Rf6 44.Qf6 Kh7 45.Rh6 Kg8 46.Qg7) 
38.Re6 Kg8 
   (38...Re8 39.Rf6 Re2 40.Kg1 Re1 41.Qe1 Qf6 42.Qe6 Kh7 43.Bf6 h5 
   44.Qf7 Kh6 45.Qh5) 
39.Qf6 
   (39.Rf6 Rd8 40.Rg6 fg6 41.Qg7) 
39...Qf6 40.Rf6 Re8 41.Be5 Rf8 
   (41...Re6 42.Ra8 Re8 43.Re8 Kg7 44.Rc6 f6 45.Rc7 Kg6 46.Rg8) 
42.Rh6 f6 43.Bf6 Rf6 44.Rf6 
   (44.Rf6 Kh8 45.Rf8) 
1–0



Hasler,Ueli – Tortoza,Carlos
CiF, 2005
1.b4 d5 2.Bb2 d4 3.Nf3 d3 4.cd3 e6 5.e3 Nf6 6.b5 Bd6 7.e4 0–0? 
   (better is 7...Bf4+=) 
8.e5+– Be7 9.ef6 Bf6 10.Bf6 Qf6 11.Nc3 c6 12.bc6 
   (12.d4 Rd8+–) 
12...Nc6 13.Ne4 Qb2 14.Be2 Nd4 15.Nd4 Qd4 16.0–0 Bd7 17.Qb3 b6 18.Rac1 
Rac8 19.Ng5 Rc5 
   (19...Qf4 20.Nf3+–) 
20.Rc5 bc5 21.Qc4 Qd6 
   (21...Rc8 22.Nf3 Qd5 23.Rc1+–) 
22.Qe4 
   (better is 22.Ne4!? Qf4+–) 
22...f5 23.Qb7 Rb8 
   (23...a5 24.Qa7+–) 
24.Qa7 h6 25.Nf3 Bc6 
   (25...Rb4 26.Rc1 Ra4 27.Qc5 Qc5 28.Rc5 Ra2+–) 
26.Ne1 
   (better is 26.d4!? cd4 27.Qd4 Qd4 28.Nd4 Bd5+–) 
26...Ra8 27.Qb6 e5 
   (27...Rb8 28.Qa6 Ra8 29.Qc4+–) 
28.Qb2 
   (28.Bf3 Rc8+–) 
28...Qg6 
   (28...Bd5 29.a3+–) 
29.g3 
   (29.Nf3 Re8+–) 
29...f4 
   (29...Qe6+–) 
30.Qe5 fg3 31.fg3 Re8 32.Qh5 Qd6 33.Qg4 Bd7 34.Qf4 
   (34.Qc4 Be6 35.Qa4 Bd7 36.Qb3 Be6+–) 
34...Qe7?? 
   (better is 34...Qf4 35.Rf4 Re2+=) 
35.Bg4 Bc6 
   (35...Bg4 36.Qg4 Qd6 37.Qc4 Kh7 38.Nc2+–) 
36.Qc4 Kh8 37.d4 Qg5 38.d5 
   (38.dc5 Qd2 39.Bf3 Qe3 40.Kg2 Bf3 41.Nf3 Re4+–) 
38...Bb7 
   (38...Bd5 39.Qc5 Qd2 40.Rf8 Rf8 41.Qf8 Bg8 42.Nf3 Qa2 43.h4+–) 
39.d3 Qe3 40.Kh1 Re5 41.Bf3 Bc8 
   (41...Qd4 42.Qd4 cd4 43.Nc2 Bd5 44.Nd4 Ba2 45.Be4+–) 
42.Be4 
   (better is 42.Nc2 Qg5+–) 
42...Bh3 
   (42...Kg8+–) 
43.Rf8# 1–0



Zimmerman,Yuri – Hasler,Ulrich
corr SOK–89–39, 1989
1.b4 d5 2.Bb2 e6 3.b5 c6 4.e3 Bd7 5.a4 Nf6 6.Nf3 Be7 7.c4 0–0 8.Be2 
   (8.Nc3 Bd6 9.d4 Qa5 10.c5 Ne4 11.cd6 cb5 12.ab5 Qb4 13.Qa4 Qb2 14.Nd1 
   Nf2 15.Nb2 Nh1 16.Bd3 Rc8 17.Kf1 a5 18.Qd1 e5 19.Ne5 Rc3 20.Rc1 Rc1 
   21.Qc1 f6 22.Qc7 fe5 Taulien,H (2350)–Ruprich,T (2095)/Demoturnier 
   2002/1–0) 
8...Ne4 
   (8...Be8 9.0–0 cb5 10.cb5 a6 11.Nc3 ab5 12.Nb5 Bc6 13.Ne5 Nbd7 14.Nc6 
   bc6 15.Nd4 c5 16.Nb5 c4 17.Nc3 Nc5 18.d3 cd3 19.Bd3 e5 20.Bb5 d4 
   21.ed4 ed4 22.Ne2 d3 23.Nd4 Luettig,H–Seemann,H (1750)/Pinneberg–ch 
   2004/1–0 (38)) 
9.0–0N 
   (9.Nc3 Bf6 10.Qc2 Bc3 11.dc3 c5 12.Rd1 Nf6 13.cd5 ed5 14.c4 dc4 
   15.Ng5 Qa5 16.Bc3 Qd8 17.Bf6 Qa5 18.Bc3 Qd8 19.Qh7 1–0 glufs 
   (2155)–SVTI (1650)/ChessWorld.net 2003) 
9...Bf6 10.d4 Be7 11.Ne5 f6 12.Nd7 Nd7 13.f3 Nd6 14.c5 Ne8 15.Nc3 e5 
16.Qb3 Kh8 17.e4?? 
   (better is 17.f4+/-) 
17...ed4–+ 18.Nd5 
   (18.Na2 Nc5 19.Qd1 de4 20.Bd4 Nd3–+) 
18...Bc5 
   (18...Nc5 19.Qc4 cd5 20.ed5–+) 
19.Kh1 
   (19.Bd3 cd5 20.Qd5 Rc8–+) 
19...cd5 20.Qd5 b6 21.Bd4 Nc7 22.Bc5?? 
   (22.Qc4–+) 
22...Nd5 
   (22...bc5?! 23.Qc6-/+; 
   22...Nc5?! 23.Qc4–+) 
23.Bf8 Nc3 24.Bg7 Kg7 25.Rf2 
   (25.Bc4 Rc8 26.Be6 Rc7–+) 
25...Ne2 
   (better is 25...Nc5 26.Raf1–+) 
26.Re2 Qe7 
   (26...Nc5 27.Re3–+) 
27.a5 
   (27.Rc2 Nc5 28.Rc4 a6–+) 
27...ba5 28.Ra5 
   (28.Ree1 Rb8 29.Ra5 Qb4–+) 
28...Qb4 29.Ra1 Qb5 30.Ree1 a5 31.h4 
   (31.Reb1 Qc6–+) 
31...Ne5 32.Reb1 Qe2 33.Rb7 Kg6 34.f4 
   (34.h5 Kh5 35.Rh7 Kg6–+) 
34...Qe4 35.fe5 
   (35.Rc7 Qf4 36.Rac1 Qh4 37.Kg1 Ng4–+) 
35...Qh4 36.Kg1 Qd4 
   (36...Qd4 37.Kh2 Qe5 38.Kh3 Qa1–+) 
0–1



Breite,Wilhelm – Hasler,Ulrich
CiF, 1990
1.b4 d5 2.Bb2 e6 3.e3 Nf6 4.b5 c5 5.bc6 bc6 6.d3 
   (6.Nf3!?=) 
6...Bd6 7.g3 
   (7.Nf3 Nbd7+=) 
7...Nbd7 8.Bg2 
   (8.Nc3 e5-/+) 
8...Rb8-/+ 9.Bc3 Bb4 
   (9...e5 10.Nf3-/+) 
10.Ne2 0–0 11.0–0 Bc3 12.Nbc3 Bb7 13.Nd4 
   (13.Rb1 a6=) 
13...c5 14.Nf3 Nb6 
   (14...d4 15.ed4 Bf3 16.Qf3 cd4 17.Ne2-/+) 
15.Nd2 
   (15.Rb1 Qe7+=) 
15...d4-/+ 16.Nb5 
   (16.Nce4 Ne4 17.Ne4 f5-/+) 
16...e5 
   (16...de3 17.fe3 Bg2 18.Kg2–+) 
17.ed4 cd4 18.Nd6?? 
   (better is 18.Bb7 Rb7 19.Qf3-/+) 
18...Qd6–+ 19.Re1 Rfe8 20.Bb7 Rb7 21.Qf3 Qd5 
   (21...Rc7 22.Rac1–+) 
22.Qd1 
   (22.Qd5 Nbd5 23.Nc4 Rc7–+) 
22...Na4 23.Qe2 
   (23.Ne4 Ne4 24.de4 Qc6–+) 
23...Rb2 24.Nc4 Nc3 25.Qd2 Rbb8 26.Qc1 Nce4 
   (26...e4 27.Qf4–+) 
27.Qa3 Ra8 28.Qa4 
   (28.Ne5 Ng5 (worse is 28...Qe5 29.de4 Ne4 30.Qd3–+) 29.h4 Ng4 (29...Re5 
   30.hg5 Rg5 31.c4–+) 30.hg5 Ne5–+ (worse is 30...Re5 31.Qa4–+)) 
28...Nc3 
   (28...Ng5!? 29.Reb1–+) 
29.Qb4 e4 30.Nd6 Re6 31.Nc4 
   (31.Ne4 Nfe4 32.de4 Re4 33.Re4 Qe4–+) 
31...ed3 32.cd3 Nce4 
   (better is 32...Ne2 33.Re2 Re2 34.Qd6–+) 
33.Rab1?? 
   (better is 33.de4 Ne4 34.Rad1–+) 
33...Ng5–+ 34.Nd2 
   (34.Re6 Nf3 35.Kh1 fe6 36.Qb7–+) 
34...Nh3 35.Kf1 Qh1# 0–1



Hasler,Ulrich – Bauer,HJ
corr ICCF 2–GT, 1993
1.b4 d5 2.Bb2 f6 3.e3 e5+= 4.b5 Nd7 5.c4 
   (5.d4 Ne7+=) 
5...Nb6 6.Qb3 
   (6.cd5 Nd5 7.d4 Bb4 8.Nd2 Bc3 9.Bc3 Nc3=) 
6...Be6 
   (6...dc4 7.Bc4 Nc4 8.Qc4+=) 
7.d3 
   (7.cd5 Bd5 8.Qc2 Bd6=) 
7...d4 
   (7...Bd6!?-/+) 
8.ed4= Nh6 
   (better is 8...ed4 9.Be2 a5=) 
9.de5+/- Bc5 
   (9...fe5 10.Nf3+/-) 
10.Nd2 
   (10.ef6 gf6 11.Nf3 Qe7+/-) 
10...Ng4 
   (10...fe5 11.Ne4 (11.Be5?! Ng4 12.Ne4 Bf2 13.Nf2 Ne5=) 11...Nd7 
   12.Nf3+/-) 
11.Ne4 a5?? 
   (better is 11...Bd4 12.ef6 Nf6 13.Bd4 Qd4+/-) 
12.Nc5+– Qe7 13.Bd4 
   (better is 13.Nb7 Ne5 14.Be2+–) 
13...fe5+/- 14.Ne6 Qe6?? 
   (14...ed4 15.c5 a4+–) 
15.Bb2 
   (better is 15.Bc5+–) 
15...Nf2 
   (15...0–0 16.Nf3 a4+–) 
16.Kf2 0–0 17.Nf3 Nd7 
   (17...a4 18.Qa3+–) 
18.Be2 
   (18.Re1 a4 19.Qa3 c6+–) 
18...Nc5 
   (18...e4 19.de4 Nc5 20.Qe3 Ne4 21.Kg1+–) 
19.Qc3 b6 
   (19...Qb6 20.Ke1+–) 
20.Qe5 Rf7 
   (20...Qf7 21.Rhf1+–) 
21.Rhf1 
   (21.d4 Re8 22.Qe6 Ne6+–) 
21...Re8 
   (21...Qd7 22.Qd4+–) 
22.Qe6 Ne6 
   (22...Re6 23.d4 Na4 24.Ba3+–) 
23.Kg1 
   (23.Rae1 Nf4 24.d4 g5+–) 
23...Nc5 
   (23...Nf4 24.Bd1 Nd3 25.Bc3+–) 
24.Rae1 
   (24.Ne5 Rf6 25.Bf3 Ne6+–) 
24...h6 
   (24...Na4 25.Bd4+–) 
25.d4 Nd7 26.Bd3 Rd8 
   (26...Rfe7 27.Ne5 Ne5 28.de5+–) 
27.d5 
   (27.Be4 Rff8+–) 
27...Nc5 28.Bc2 
   (28.Bg6 Rff8+–) 
28...Nb7 
   (28...Rff8 29.Nd4 Rf1 30.Kf1 Rf8 31.Kg1+–) 
29.Nd4 
   (29.Bg6 Rfd7 30.Bf5 Nc5+–) 
29...Nd6 
   (29...Rf1 30.Rf1 Nd6 31.Ne6+–) 
30.Bd3 
   (30.Ne6 Rf1 31.Rf1 Rc8 32.Bg7 Nc4 33.Bh6 a4+–) 
30...Rf1 
   (30...Rdd7 31.Ne6 g5 32.Be5+–) 
31.Rf1 Nf7 
   (31...a4 32.Ne6 Rc8 33.Bg7+–) 
32.Ne6 
   (32.Ne6 Rc8 33.Bg7+–) 
1–0



Hasler,Ulrich – Gusgaard
corr ICCF/III/1054, 1965
1.b4 d5 2.Bb2 Nf6 3.e3 a6 4.a4 e6 5.b5 ab5 6.ab5 Ra1 7.Ba1 Nbd7 8.Nf3 Be7 
9.Be2 c6 10.0–0 Qc7 11.c4 e5 12.Qb3 e4 13.Nd4 Ne5 
   (13...Bd6 14.f4=) 
14.Rc1 
   (14.cd5!? cd5 15.b6+=) 
14...Nc4 15.Bc4 Ng4 16.g3 
   (16.f4 ef3 17.Nf3 dc4 18.Qc4+=) 
16...h5?? 
   (16...dc4 17.Qc2 c5+=) 
17.Bd5!+– 0–0 
   (17...cd5 18.Rc7) 
18.bc6 Qd6 
   (18...bc6 19.Be4 c5+–) 
19.cb7 Be6 
   (19...Bd7+–) 
20.Be6 fe6 21.Ne6 
   (21.Ne6 Qd3 22.Qd3 ed3 23.Rc8+–) 
1–0



De Smet,Karl – Hasler,Ulrich
corr ICCF TT/4/90, 1990
1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Nbd7 6.c4 Bd6 7.Be2 0–0 8.0–0 b6 
9.d4 Bb7 10.dc5 bc5 11.Nbd2 Qc7 12.Qc2 Rfe8 13.h3 
   (13.Rfd1 Rad8=) 
13...e5 14.cd5 Nd5 
   (14...e4 15.Ng5 Bd5 16.Nc4=) 
15.Ng5 g6 
   (15...N7f6 16.e4 Nb4 17.Qc4=) 
16.e4 Be7 17.Nf7 Kf7 18.Nc4?? 
   (better is 18.Bc4 N7b6 19.Nf3+=) 
N5f6–+ 
   (18...N5f6 19.f3 Rad8–+) 
0–1



Hasler,Ulrich – Verges,Joaquim
corr Switzerland, 1985
1.b4 d5 2.Bb2 Nf6 3.e3 e6 4.b5 c5 5.Nf3 Bd7 6.c4 Be7 7.d4 0–0 8.Bd3 dc4 
9.Bc4 cd4 
   (9...a6 10.a4=) 
10.Nd4 
   (10.Bd4 a6=) 
10...Bb4+= 11.Nc3 
   (11.Nd2 Ne4 12.N4f3 Nd6+=) 
11...Ne4 
   (better is 11...Bc3 12.Bc3 Qc7–+) 
12.Rc1= e5 
   (better is 12...Qa5 13.Qd3 Nc5+=) 
13.Nde2 
   (13.Nf3 Qa5 14.Qb3 Nc5-/+) 
13...a6 
   (13...Qh4 14.g3 Ng3 15.Bf7 Rf7 16.Ng3 Bb5 17.a3 Bc3 18.Rc3–+) 
14.a4 
   (14.0–0 Nd6 15.Qb3 Nc4 16.Qc4 Bc3 17.Qc3 Re8=) 
14...Qg5 
   (14...ab5!? 15.Bb5 Bb5 16.ab5 Qd1 17.Rd1 Ra2-/+) 
15.0–0+= White gets in control 15...Bc3 
   (15...Bh3 16.Ng3 Ng3 17.hg3 ab5 18.ab5+=) 
16.Bc3 
   (better is 16.Nc3 Nc3 17.Bc3 ab5 18.ab5+=) 
16...Rd8? 
   (better is 16...ab5 17.ab5 Bg4=) 
17.Qd5+/- Nd6 18.f4 
   (18.Qd6!? Bh3 19.Qd8 Qd8 20.gh3 ab5 21.Bb5+–) 
18...Qg6 19.Be5 Be6 20.Qd4 Bc4 21.Rc4 Nc6 
   (21...ab5 22.ab5 Nc6 23.bc6 Nc4 24.cb7 Rab8 25.Qc4 Rb7+–) 
22.bc6 Nf5?? 
   (22...Nc4 23.cb7 Rab8 24.Qc4 Rb7+–) 
23.Qb6 
   (23.Qe4 bc6 24.Rc6 f6+–) 
23...Nh4 
   (23...bc6 24.Rc6 Qg4 25.Rc2+–) 
24.g3 
   (better is 24.Ng3 bc6 25.Rc6 Qd3+–) 
24...Qe6 
   (24...bc6 25.Rc6 f6 26.Bc7+–) 
25.Rc2 
   (25.Rc3 bc6 26.gh4 Rd2+–) 
25...Qf5 
   (25...bc6 26.Qc6 (worse is 26.Rc6 Qa2 27.Kf2 Ng6+–) 26...Qc6 27.Rc6+–) 
26.c7 
   (better is 26.Rc3 bc6 27.gh4 Qg4 28.Ng3 Rd2 29.Qc6 Rad8+–) 
26...Rdc8 
   (26...Nf3 27.Kf2 Rdc8 28.Rd1+–) 
27.Rd1 
   (better is 27.Rd2 Re8 28.Qb7 Rac8 29.gh4 f6+–) 
27...Nf3 
   (27...h6 28.Rd8 Kh7 29.Bg7 Kg7 30.gh4 Rd8 31.cd8R (worse is 31.cd8B Qc2 
   32.Bf6 Kh7 33.Qb7 Qg6 34.Ng3 Re8+–; 31.cd8N Qc2 32.Ne6 fe6 33.Qb7 Kf6 
   34.Qa8 Qe2 35.Qf8 Kg6 36.h5 Kh5 37.Qf7 Kh4 38.Qe7 Kh5 39.Qe6 Qe1 
   40.Kg2 Qe2 41.Kg3 Qe1 42.Kf3 Qh1 43.Ke2 Qh2 44.Kd3 Qh1+–) 31...Rd8 
   32.Nd4+–) 
28.Kg2 
   (better is 28.Kf2 h6 29.Rd8 Kh7 30.Bg7 Kg7 31.Qb2 Ne5 32.Rc8 Rc8 33.Qe5 Qe5 
   34.fe5 h5+–) 
28...Ne1 
   (28...h6 29.Rd8 Kh7 30.Bg7 Kg7 31.Qb2 f6 32.Kf3 Rd8 33.cd8R Rd8 
   34.Qb7 Kg8+–) 
29.Kf1 h6 30.Nd4 Qe4 31.Re1 
   (31.Re1 f6 32.Qe6 Kh7 33.Qf5 Qf5 34.Nf5 fe5 35.Ne7 ef4 36.gf4+–) 
1–0



Hasler,Ulrich – Borsi
corr ICCF EU–III–1006, 1989
1.b4 d5+= 2.Bb2 Bf5 3.e3 Nf6 4.Nf3 e6 5.c4 Nc6 6.a3+= dc4 7.Bc4 Bd3 8.Bd3 
Qd3 9.Qa4 a6 
   (9...b5 10.Qa6 Ne7+=) 
10.Ne5+= Qd6 
   (10...Qb5!? 11.Qb5 ab5 12.Nc6 bc6=) 
11.Nc6+/- bc6 12.0–0 
   (12.Bf6 gf6 13.d4 Rg8+/-) 
12...Be7 13.Rc1 Kd7 
   (13...0–0 14.Rc6 Qd7 15.Qc2+–) 
14.Be5 Qd5 15.d4 Bd6 
   (15...a5 16.Bf6 gf6 17.ba5+/-) 
16.Nc3 Qc4 17.Bf6 gf6 18.Ne4 Qb5 19.Nf6 
   (better is 19.Qc2!?+–) 
19...Ke7+/- 20.Qb5 cb5 21.Ne4 Rhg8 22.Nd6 Kd6 23.g3 
   (23.a4 a5+/-) 
23...a5 24.Kg2 
   (24.h3 h6+/-) 
24...f5 
   (24...ab4 25.ab4 Ra4 26.Rab1+/-) 
25.f4 
   (25.h3 h6+/-) 
25...ab4+= 26.ab4 Ra1 
   (26...Ra4!?+=) 
27.Ra1+/- Rg7 28.Kf3 c6 
   (28...Kd5 29.Ra8+/-) 
29.Rc1 
   (29.e4 fe4 30.Ke4 Rd7+–) 
29...Ra7+/- 30.h3 
   (30.Rc5 Ra4+=) 
30...h5 31.Rc3 Ra2 
   (31...Ra4 32.Rb3+/-) 
32.Rb3 
   (32.e4!?+/-) 
32...Rh2 33.h4 Rd2 34.Rb1 Rc2 35.Rb3 
   (35.Ra1 Rb2+=) 
35...Kd5 36.Ra3 Kc4 37.Ra8 Kb4 38.Re8 Rd2 39.Re6 c5 40.dc5 Kc5 41.Re5 
   (41.Rh6 b4+/-) 
41...Rd5 42.e4 Re5 43.fe5 Kd4?? 
   (43...b4 44.Ke3 b3 45.ef5 b2–+) 
44.e6+– fe4 45.Ke2 b4 46.e7 b3 47.e8Q Kc4 
   (47...Kc3 48.Qh5 Kc4 49.Qe5+–) 
48.Qe4 
   (48.Qe4 Kc3 49.Qf3 Kc2 50.Qf5 Kc3 51.Qc5 Kb2 52.Kd2 Ka2 53.Kc3 b2 
   54.Qf2 Ka1 55.Qb2#) 
1–0



Hasler,Ulrich – Kientzler,Isabelle
CiF, 1989
1.b4 e5+= 2.Bb2 d5 3.Be5 Bb4?? 4.Bg7+– Qg5 
   (4...Nf6 5.Bh8 Bf5 6.e3+–) 
5.Bh8 f6 6.Nf3 Qf5 7.c3 
   (7.e3 Qg6+–) 
7...Bc5 
   (7...Bd6 8.Na3+–) 
8.d4 Bd6 9.e3 Qg6 10.Nh4 
   (10.Bd3 f5+–) 
10...Qg5 
   (10...Qh6 11.g3+–) 
11.g3 Bg4 
   (11...h6 12.Be2 Ne7 13.f4+–) 
12.Qb3 b6 13.Bg2 Nh6 
   (13...c6 14.f4 Qh5 15.c4+–) 
14.Bd5 
   (14.f4 Qh5 15.Bg7 Bf8 16.Bf8 Kf8 17.Qd5 Qd5 18.Bd5 c6+–) 
14...Qd5 
   (14...c6 15.Be4 Nf7+–) 
15.Qd5 
   (15.Qd5 c6 16.Qd6+–) 
1–0



Hasler,Ulrich – Eijkerem
corr ICCF III–839, 1990
1.b4 e5+= 2.Bb2 d6 3.c4 Nf6 4.e3 Be7 5.Nf3 0–0 6.Be2 b6 7.0–0 Bb7 8.d4= 
ed4 
   (8...e4 9.Ng5=) 
9.Bd4 
   (9.Nd4 a5 10.Bf3 Bf3 11.Qf3 Nbd7+=) 
9...Nc6 10.Bc3 Ne4 11.b5 Nc3 12.Nc3 Bf6?? 
   (better is 12...Ne5=) 
13.bc6+– 
   (13.bc6 Bc6 14.Nd4 Bd4 15.ed4+–) 
1–0



Hasler,Ulrich – Kientzler,Roland
CiF, 1991
1.b4 e5+= 2.Bb2 e4 3.e3 d5 4.c4 Be6 
   (4...Nf6 5.cd5 Nd5 6.Nc3+=) 
5.c5 c6 
   (5...a5 6.a3+=) 
6.Ne2 
   (6.d3 Nd7=) 
6...Na6 7.a3 Nc7 8.Nd4 Qd7 9.Be2 Nf6 10.0–0 Bg4 
   (10...b6 11.Ne6 Qe6 12.cb6 ab6 13.d3+=) 
11.Bg4 Qg4 12.f3 
   (12.d3 Qg6=) 
12...ef3 
   (12...Qg6 13.Nc3=) 
13.Nf3 
   (13.Rf3 Ne6 14.Ne6 fe6+=) 
13...Be7= 14.Qe1 h5 
   (14...0–0–0 15.Ne5 Qh5 16.Qg3=) 
15.h3 White gets strong initiative 15...Qe4 16.Nc3 Qc2 
   (16...Qg6 17.Qf2+=) 
17.Nd4 Qb2? 
   (better is 17...Qg6!?+=) 
18.Ra2+– Qb3?? 
   (better is 18...Qa2 19.Na2 0–0–0+–) 
19.Nb3 h4 
   (19...Ne6 20.Rb2+–) 
20.Nd4 g6 
   (20...0–0–0 21.Nf5 Bf8 22.Rf4+–) 
21.e4 Rd8 22.ed5 
   (22.e5 Nd7+–) 
22...Nfd5 23.Nd5 cd5 
   (23...Nd5 24.d3 0–0+–) 
24.Qe5 f6 25.Rf6 
   (better is 25.Qc7 b6+–) 
25...Rh5 26.Qe2 Kd7 
   (26...Rg5 27.Rf4+–) 
27.Rg6 
   (better is 27.Qg4 Ke8 28.Qg6 Kd7 29.Qg4 Ke8 30.Qh5 Kd7 31.Qf5 Ke8+–) 
27...Rh7 28.Qg4 Ke8 29.d3 Rd7 30.Re2 Kd8 White now must not overlook 
the idea Bf8 31.Rg8 Ne8 32.Re8! Ke8 Decoy to e8 
   (32...Kc7 33.Nb5 Kc6 34.Na7 Kc7 35.Rc8) 
33.Qg8# 1–0



Hasler,Ulrich – Psion
, 1990
1.b4 e5+= 2.Bb2 f6 3.e4 d5 4.f4 ef4 5.Qh5 g6 6.Qd5 Qd5 7.ed5 Bb4 8.Bc4 
Bf5-/+ 9.Ne2 Bc2 10.Nf4 Nd7 11.Ne6 Rc8 12.Nd4 
   (12.0–0 Nb6 13.Bb5 c6 14.dc6 bc6+=) 
12...Bb1 13.Rb1 Nb6 14.Bb5 
   (14.Bb3 h6-/+) 
14...Kf7 15.0–0 
   (better is 15.Ne6!?-/+) 
15...Bd2–+ 
   (15...Nd5?! 16.Bc4 Nge7 17.Rbe1-/+) 
16.Ne6 
   (16.Kf2 Nd5 17.Ke2 Bb4–+) 
16...c6 17.dc6 
   (17.Be2 cd5 18.Nd4 Be3 19.Kh1 Nc4–+) 
17...Ke6 
   (better is 17...bc6 18.Be2 Be3 19.Kh1 Ke6 20.Bg4 Kf7 21.Bc8 Nc8–+) 
18.cb7 Be3?? 
   (better is 18...Rb8 19.Rf2 Be3–+) 
19.Kh1= Rb8 20.Rbe1 Nd5 21.Bd4 
   (21.Bc6!?=) 
21...Kd6 22.Be3 Rb7 23.Ba6 Ne3 24.Re3 Rb2 25.Rd1 Kc5 26.Rc3 Kb4 27.Rc8 
Ra2 28.Bc4 Rc2 29.Rb1 Ka3 30.Rcb8 
   (30.Rg8?! Rg8 31.Bg8 a5+/-) 
30...Ra2 White now must not overlook the idea Ka4 31.R1b3 
   (31.Bg8?! Rg8 32.Rg8 a5+–; 
   31.Rg8?! Rg8 32.Bg8 Rc2+/-) 
31...Ka4 32.R3b4 Ka3 33.Ba2 Ne7 34.Rh8 Kb4 35.Rh7 Nc6 36.Bd5 Kb5 
   (36...Ne5 37.Ra7 Kc5 38.Ra5 Kd4 39.Bg8+–) 
37.Rh6 
   (better is 37.Bc6!? Kc6 38.Rf7 f5+–) 
37...Ne5 38.Bg8 a5 39.Bh7 Kc6 
   (39...a4 40.Bg6 a3 41.Bb1+–) 
40.Bg6 Kd6 41.Bf5 Ke7 42.Rh7 
   (better is 42.Rh4!? Nc6+–) 
42...Kd6 43.Ra7 Nc4 44.Bd3 Ne5 45.Bb5 
   (better is 45.Ra6!? Ke7 46.Bb5 a4+–) 
45...Kc5 46.Be2 
   (worse is 46.Ra5 Kb4 47.Ra6 Kb5 48.Rf6 Ng4+–) 
46...Kb4 47.Ra6 a4 
   (47...Nd7 48.Rd6 Nc5 49.Rb6 Kc3 50.Rb5+–) 
48.Rf6 
   (better is 48.Bd1!? a3 49.Ra4 Kc5 50.Ra3 f5+–) 
48...a3 49.Rb6 
   (49.Ra6!? Kb3 50.Bf3 Kb2 51.Rb6 Kc3+–) 
49...Kc3 50.Rb5 
   (better is 50.Bd1!? a2 51.Rb3 Kd2 52.Rb2 Kd1 53.Ra2 Nd3+–) 
50...a2 Do you see the mate threat? 51.Ra5 Kb2 52.h4 a1Q 53.Ra1 Ka1 
54.h5 Nf7 55.g4 
   (55.g4 Ng5 56.Kh2+–) 
1–0



Hasler,Ulrich – Hass,Roman
corr ICCF EU–III–1006, 1989
1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 Qe7 5.Ne2 Nh6 6.0–0 Nf7 7.c3 Nd6 
   (7...Bc5 8.d4 Bb6 9.Ng3+=) 
8.Bd5= Bc5 9.d4 Nc4?? 
   (better is 9...ed4 10.cd4 Bb6=) 
10.Bc4+– Bb6 
   (10...ed4 11.Nd4 Nc6 12.Nf5+–) 
11.Nd2 Nc6 12.Qc2 Ba5 
   (12...d6 13.d5 Na5 14.Bb5 c6 15.Bd3+–) 
13.d5 Nd8 14.Qa4 Bb6 15.Ba3 Bc5 16.Bc5 Qc5 17.Qb5 
   (17.Nb3 Qd6+–) 
17...Qd6 
   (17...Qb5 18.Bb5 a6 19.Bc4+–) 
18.Rab1 0–0 19.Ng3 Qa3 
   (19...a6 20.Qb4 Qb4 21.Rb4+–) 
20.d6 Nf7 21.dc7 a6 
   (21...Qd6 22.Bd5 Qc7 23.Bb7 Rb8+=) 
22.Qb4 Qb4 23.cb4 d6 24.Bd5 Re8 25.Nc4 Ra7 
   (25...Re7 26.Nb6 Rc7 27.Na8+–) 
26.Bf7 
   (better is 26.Nd6 Kf8 27.Bf7 Ke7 28.Ne8 g6+–) 
26...Kf7 27.Nd6 Kf8 
   (27...Ke7 28.Ne8 Ke8 29.Rfd1+–) 
28.Ne8 
   (28.Nh5 b6 29.Ng7 Kg7 30.Ne8 Kf8 31.Nf6 Rc7+–) 
28...Ke8 29.Rfd1 Ra8 30.Rd8 Kf7 31.Nf5 h6 
   (31...Ke6 32.Nd6 h6 33.Nc8 Rc8 34.Rc8+–) 
32.Nd6 Kg6 33.Rc8 
   (33.Rc8 Rc8 34.Nc8+–) 
1–0



Hasler,Ulrich – Calster
corr EU–ch GT7, 1964
1.b4 e5 2.Bb2 Nc6 3.b5 Na5 4.Be5 d5 5.e3 Bd7 6.Nf3 Nc4 7.Bc4 dc4 8.a4 
Bc5?? 
   (8...f6 9.Bg3+/-) 
9.0–0 
   (9.Bg7!? a6 10.ba6 Ra6 11.Bh8 Ra4 12.Ra4 Ba4+–) 
9...a6?? 
   (better is 9...f6 10.Bd4 Bd6+–) 
10.Bg7 ab5 11.Nc3 
   (11.a5 Bb4+–) 
11...ba4 12.Bh8 f6 
   (12...Bb4 13.Ne5 Bc3 14.dc3+–) 
13.d4 
   (13.Qe2 b5 14.Nh4 Qe7 15.Nb5 Bb5 16.Qh5 Kf8 17.Bg7 Qg7 18.Qc5 Ne7 
   19.Qb5 Qg4+–) 
13...Be7 
   (13...Bb4 14.Nd5 Bd6 15.Nd2+–) 
14.Nd2 b5 
   (14...Nh6 15.Qh5 Nf7 16.Qh7+–) 
15.Qh5 Kf8 16.Qh7 
   (16.Qh7 Be6 17.Bg7 Ke8 18.Qh5 Bf7 19.Qb5 Qd7 20.Qd7 Kd7 21.Na4+–) 
1–0



Hasler,Ulrich – Schumacher
corr ICCF EU–III–1006, 1988
1.b4 e5 2.Bb2 Nf6 3.Be5 Bb4 4.c4 Nc6 5.Bb2 0–0 6.e3 Re8 7.Nf3 d5 8.cd5 
Nd5 9.Be2 Bf5 10.0–0 Ne5?? 11.Ne5+– f6 12.Nf3 c5 13.Qb3 a5 14.a3 Bd2 
   (14...a4 15.Qd1 Ba5+–) 
15.Nbd2 b6 16.Bc4 Be6 17.Ne4 h6 
   (17...a4 18.Qb5+–) 
18.Rfd1 a4 19.Qa2 Ra7 20.Bd5 Bd5 21.Rd5 Qe7 22.Rd7 
   (better is 22.Re5! Kh7 23.Re7 Rae7+–) 
22...Qe6 23.Nf6! Kf8 
   (23...gf6 24.Qe6 A double attack) 
24.Nh7 Kg8 25.Qe6 Re6 26.Ra7 
   (26.Ra7 Rg6 27.Ne5+–) 
1–0



Hasler,Ulrich – Zimmer,Georg
corr SOK–89–39, 1989
1.b4 e5 2.Bb2 Bb4 3.f4 d6 4.fe5 de5 5.Be5 Nf6 6.Nf3 Nc6 7.Bb2 0–0 8.e3 
Bg4 9.Be2+= Ne4 10.c3 White fights for the Initiative 10...Bd6 11.0–0 
Re8 12.Nd4 
   (12.d3 Nf6 13.e4 Be6+=) 
12...Be2 
   (12...Qh4 13.h3 Be2 14.Qe2 Nd4 15.Qc4–+) 
13.Ne2 Qe7 
   (13...Qh4 14.Nf4-/+) 
14.d3+= Nd2?? 
   (14...Nf6 15.e4 Ng4–+) 
15.Qd2+/- 
   (15.Nd2 Qe3 16.Rf2 Bh2 17.Kf1 Qd3=) 
15...Qe3 16.Qe3 Re3 17.Nc1 Rae8 18.g3 Re1 
   (18...Ne5 19.d4 Nc4 20.Rf2=) 
19.Nd2+– Rf1 20.Nf1 Ne5 21.d4 
   (21.Rb1 c5+–) 
21...Nc4+/- 22.Nd3 Nb2 
   (22...Re2 23.Rb1+/-) 
23.Nb2+– c5 
   (23...Re2 24.Rb1+–) 
24.dc5 
   (better is 24.Nc4 Re6 25.Nd6 Rd6 26.dc5+–) 
24...Bc5+/- 25.Kh1 Re2 26.Nd3 Ba3 27.Rd1 
   (27.Nf4 Rc2 28.Nd5+/-) 
27...Rc2 
   (better is 27...Ra2!? 28.Nb4 Bb4 29.cb4 Kf8+/-) 
28.Nb4+– Threatening mate... how? 28...Bb4 29.cb4 g6 
   (29...Kf8 30.Rd7+–) 
30.Rd7 
   (30.Rd2 Rc1 31.Rd8 Kg7+–) 
30...Ra2 31.Rb7 Kg7 32.Ne3 
   (32.Rd7 h6+–) 
32...Rb2 
   (32...Re2 33.Nd5 a6 34.Re7+–) 
33.Ra7 Rb4 34.Kg2 Rb2 35.Kf3 
   (35.Kh3 Rd2+–) 
35...Rh2 36.Ng4 
   (36.Nd5 h5+–) 
36...Rc2 37.Ne5 Rc3 38.Kg2 
   (38.Kg2 Rc2 39.Kh3+–) 
1–0



Weisbrod,Juergen – Hasler,Ulrich
corr KMG–21, 1990
1.b4 e5+= 2.Bb2 Bb4 3.f4 ef4–+ 4.Nf3 Nf6 5.Nc3 
   (5.Be5 Nh5–+) 
5...0–0 
   (5...d5 6.a3 Bc5 7.Na4–+) 
6.g3 
   (6.a3 Bc5–+) 
6...d6 
   (6...fg3 7.hg3 d5 8.e3–+) 
7.Bg2 
   (7.gf4 Bc3 8.Bc3 Nd5–+) 
7...Nc6 8.gf4 Bc3 9.Bc3 Nd5 10.e3 
   (10.Rg1 Nc3 11.dc3 Re8–+) 
10...Re8 11.0–0 
   (11.Bb2 Nf4 12.Rg1 Ng2 13.Rg2 f6–+) 
11...Nc3 12.dc3 Re3 13.Qd2 Qe7 
   (13...Re8 14.Nd4 Bd7 15.Rab1–+) 
14.Rae1 
   (better is 14.Ne5!? Re5 15.fe5 Ne5 16.Rad1-/+) 
14...Re1–+ 15.Re1 Qd8 
   (15...Qf8 16.Nd4 Bd7 17.Nc6 Bc6 18.Bc6 bc6 19.Qe3–+) 
16.Qe3 
   (16.Qd3 Bg4–+) 
16...Bd7 17.Nd4 Nd4 
   (17...a6 18.a3–+) 
18.cd4 g6 
   (18...c6 19.Qe7–+) 
19.Qe7 
   (19.Bb7 Rb8 20.Bf3 Qf6-/+) 
19...Bc6 
   (19...Be6 20.Qd8 Rd8 21.Bb7-/+) 
20.Bc6 bc6 21.Qd8 Rd8 22.Re7 Rc8 23.c4 Kf8 24.Re1 
   (24.Re3 Rb8–+) 
24...Rb8 25.Kf2 Rb2 
   (25...Rb4 26.Ke3–+) 
26.Re2 Re2 27.Ke2 Ke7 28.Ke3 Ke6 29.Ke4?! 
   (29.a4–+) 
29...d5 30.cd5 
   (30.Ke3 dc4 31.Ke4 c3 32.f5 Kf6–+) 
30...cd5 31.Ke3 Kf5 32.h3 
   (32.Kf3 h6–+) 
32...f6 33.h4 
   (33.Kf3 h6–+) 
g5 
   (33...g5 34.hg5 fg5 35.fg5 Kg5–+) 
0–1



Hasler,Ulrich – Drefke,A
corr SOK–89–39, 1989
1.b4 e5 2.Bb2 Bb4 3.f4 ef4–+ 4.Bg7 Qh4 5.g3 fg3 6.Bg2?? gh2 7.Kf1 hg1Q 
8.Kg1 Qg4?? 9.Bh8+= f6 10.Rh7?? Qd4–+ 11.e3 Qa1 12.Qh5 Kd8 13.Qf7 Qb1 
14.Kf2 c6 15.Qg8 Kc7 16.Bf6 
   (16.Bf6 Qc2 17.Bd8 Kd6 18.Qf8 Ke6 19.Qf6#) 
1–0



Hasler,Ulrich – Rosner,Dirk
corr SOK–89–35, 1989
1.b4 e5 2.Bb2 Bb4 3.f4? ef4–+ 4.Bg7 Qh4 5.g3 fg3 6.Bg2?? gh2 7.Kf1 hg1Q 
8.Kg1 Qg4?? 9.Bh8+= f6 10.Rh7?? Qd4–+ 11.e3 Qa1 12.Qh5 Kd8 13.Qf7 Do you 
see the mate threat? 13...Qb1 14.Kf2 c6 15.Qg8 Kc7 16.Bf6 The mate 
threat is Bd8.  16...b5 17.Be5 Kb7 18.Rh8 
   (18.Qb3 Qb3 19.ab3 Bd2–+) 
18...Na6 19.Bc6 dc6 
   (19...Kc6 Decoy theme: c6 20.Rh6) 
20.Rh7 Nc7?? 
   (20...Kb6 21.Qd8 Nc7 22.Qc7 Ka6 23.Qc6 Ka5 24.Qa8 a6 25.Qc8 Bd2 
   26.Qd8 Ka4 27.Qd2 Qb4+–) 
21.Rc7= Kb6 22.Rc8 Rc8 23.Qc8 Qc2 24.Bc7 Kc5 25.Qf8 Kd5 26.Qg8 
   (26.Qg8 Ke4 27.Qg6 Kd5 28.Qc2+–) 
1–0



Kientzler,Isabelle – Hasler,Ulrich
CiF, 1988
1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 4.c3 Be7 5.e3 d6 6.Bf6 Bf6 
   (worse is 6...gf6 7.Nf3+=) 
7.Bb5 
   (7.d4 0–0+=) 
7...c6 8.Ba4 
   (8.Be2 0–0+=) 
8...0–0-/+ 9.Nf3 Qe7 
   (9...b5 10.Bb3-/+) 
10.0–0+= d5 
   (10...Be6 11.d4+=) 
11.d3 
   (11.Bc2 Bg4+=) 
11...Re8 12.Re1 b5 13.Bb3 Bg4 14.d4 Nd7 15.Na3?? 
   (15.a4 Qe4+=) 
15...a5 
   (15...Qa3 16.Rb1–+) 
16.Rb1?? 
   (better is 16.Nc2-/+) 
16...Qa3–+ 17.Qd2 Bf3 18.gf3 Qd6 
   (18...a4 19.Bd1–+) 
19.f4 Bh4 20.Qd3 Re6 
   (20...Re4 21.a4–+) 
21.a4 b4 
   (21...Rg6 22.Kf1–+) 
22.Re2 Nf6 
   (22...Rg6 23.Kh1–+) 
23.c4 dc4 24.Bc4 Re7 25.f3 
   (25.Qf5 Qd7 26.Qd7 Rd7–+) 
25...c5 
   (25...Rb8 26.Qf5 Nd5 27.Rb3–+) 
26.d5 
   (26.dc5 Qc5 27.Rb3 Qc6–+) 
26...Nd7 27.f5 Ne5 28.Qc2 
   (28.Qe4 Rb8–+) 
28...Nf3 29.Kh1 Rae8 30.Rf1 Ne5 31.Bb5 Rd8 32.Rd1 Rc7 33.Qe4 
   (33.Bc4 Nc4 34.Qc4 Bf6–+) 
33...Bf6 34.Rc2 Re7 35.Rg2 Nd7 
   (better is 35...c4–+) 
36.Rdg1 
   (36.Qf3–+) 
36...Re4 37.Rg7 Bg7 38.Rg3 Qd5 39.Bd7 Re3 
   (39...Re3 40.Kg1 Rg3 41.hg3 Qd7 42.Kf1 Qf5 43.Ke2 Re8 44.Kd2 Bc3 
   45.Kc1 Re1#) 
0–1



Hasler,Ulrich – Krahl,Wolfgang
CiF, 1996
1.b4 e6 2.Bb2 f6 3.b5 c6 
   (3...d5 4.Nc3=) 
4.c4 
   (4.e4 d5=) 
4...d5 5.e3 Bc5 
   (5...e5 6.Nc3=) 
6.Qb3 
   (6.d4 Bd6=) 
6...Bd7 
   (6...e5 7.d4 ed4 8.ed4 Qe7 9.Kd1=) 
7.a4 
   (7.d4 Bd6=) 
7...Ne7 
   (7...Qa5 8.Bc3 Qd8 9.d4+=) 
8.Nf3 0–0 
   (8...Bd6 9.Ba3 Ba3 10.Ra3=) 
9.Bd3 
   (9.d4 Bd6=) 
9...e5 
   (9...cb5 10.ab5 Qb6 11.Nc3+=) 
10.Bc2 
   (10.cd5!? cd5 11.Qc2+=) 
10...Bg4 
   (10...Be6 11.d3+=) 
11.Bd1 
   (11.Nc3 Qd7+=) 
11...e4 
   (11...Be6 12.d3+=) 
12.Nd4+= Bd4 
   (12...Bd1 13.Kd1 Bd4 14.Bd4+=) 
13.Bd4 Bf5 
   (13...Bd1!? 14.Kd1 Qd7+=) 
14.0–0= Be6 
   (14...a6 15.f3=) 
15.Be2 
   (15.d3 Nf5 16.Bc5 dc4 17.dc4 Rf7+=) 
15...Nf5 
   (15...b6 16.d3=) 
16.Bb2 
   (16.Bc5 Rf7=) 
16...Nd7 
   (16...dc4 17.Bc4 Bc4 18.Qc4 Qd5 19.Qd5 cd5+=) 
17.d3 
   (better is 17.Ba3!? Re8 18.Nc3=) 
17...Nc5-/+ 18.Qc2 
   (18.Qb4 ed3 19.Bg4 Qd6+=) 
18...ed3 19.Bd3 dc4?? 
   (better is 19...Nd3 20.Qd3 dc4 21.Qd8 Rfd8 22.bc6 b6-/+) 
20.Bc4?? 
   (better is 20.Bf5 Bf5 21.Qf5+–) 
20...Nd6 
   (better is 20...Bc4 21.Qc4 Qd5 22.Qd5 cd5=) 
21.bc6?? 
   (21.Be6 Ne6 22.bc6 Rc8+/-) 
21...bc6?? 
   (better is 21...Bc4 22.Rd1 Bb3 (22...bc6?! 23.Nd2 Be2 24.Re1+=) 23.Qc5 Bd1–+ 
  ) 
22.Be6+/- Ne6 23.Qc6 Rc8 24.Qd5 Re8 25.Nc3 
   (25.Bd4 a6+/-) 
25...Rc5 
   (25...Nc4 26.Bc1+=) 
26.Qb3 
   (better is 26.Qa2+/-) 
26...Re7? 
   (better is 26...Qb8 27.Qc2 Nc4+/-) 
27.Rad1 Qc7 
   (27...Rcc7 28.Nb5 Rcd7 29.Nd6 Rd6 30.Ba3+–) 
28.Nd5 Qd7 
   (28...Rd5 29.Qd5 Nb7+–) 
29.Ne7 Qe7 30.Rd3 
   (better is 30.Ba3 Kf8+–) 
30...Rc8 
   (30...Nc4 31.Bd4 Rc8 32.Rc3+–) 
31.Rfd1 
   (31.Ba3 Qf7 32.Bd6 Ng5+–) 
31...Rd8 
   (31...Nc4+–) 
32.Ba3 Qb7 
   (32...Kh8+–) 
33.Qe6 Qf7 34.Qf7 
   (34.Bd6?! Qe6 35.a5 Kf7=; 
   34.Rd6 Qe6 35.Rd8 Kf7 36.R8d7 Kg6+–) 
34...Kf7 35.Rd6 Rd6 36.Rd6 Ke7 37.Ra6 
   (37.Ra6 Kd8 38.Ra7+–) 
1–0



Hasler,Ulrich – Hradecky,Horst
corr ICCF III/1045, 1964
1.b4 e6 2.Bb2 Nf6 3.b5 d5 4.e3 Bd6 5.c4 b6 6.Nf3 0–0 7.d4 Ne4 8.Bd3 Bb4 
9.Nbd2 Bd2 10.Nd2 Nd2 11.Qd2 Bb7 12.0–0 
   (12.cd5 Qd5 13.e4 Qd7+/-) 
12...f5 
   (12...dc4 13.Bc4 a6 14.a4+=) 
13.Rfe1 
   (13.c5 a6+/-) 
13...Qg5 
   (13...a6 14.Qc2+=) 
14.cd5 
   (14.c5!?+/-) 
14...Bd5+= 15.f3 
   (15.f4!? Qf6 16.Rac1+=) 
15...Bf3= 16.Rf1 Bd5 17.Bc3 
   (17.Qf2!? Nd7 18.Ba3=) 
17...Bg2 18.Qg2 Qe3 19.Kh1 Nd7?? 
   (better is 19...Qd3 20.Qa8 Qc3-/+) 
20.Rf3+– Qh6 21.Bd2 
   (21.d5 e5+–) 
21...f4? 
   (better is 21...Qf6 22.Rc1 Rac8+–) 
22.Rh3 f3 
   (22...Qf6 23.Rf1 g6+–) 
23.Rf3 
   (23.Bh6?! fg2 24.Kg2 gh6 25.Rh6 Nf6=) 
23...Qh4 
   (23...g5 24.Rh3 Qg7 25.Rh7 Qf6 26.Rd7 Qf3 27.Qf3 Rf3+–) 
24.Rh3 Qd4 25.Bh7 
   (25.Bh7 Kf7 26.Bc3+–; 
   25.Bc3! Qf6 26.Bh7 Kf7 27.Bf6 Nf6+–) 
1–0

Play 1.b4 at Chessworld.net!

Chessworld.net on behalf of Marek have set up a continuous stream of 1.b4 tournaments.

These tournaments should always be available to join. As soon as four players are paired, another one will automatically be set up.

Available lines:
• 1.b4 (4 players, 1 day/move)
• 1.b4 (4 players, 10 days/move)
• 1.b4 e5 2.Bb2 Bb4 3.Be5 Nf6 (4 players, 3 days/move)
• 1.b4 e5 2.Bb2 Bb4 3.f4 ef4 4.Bg7 Qh4 5.g3 fg3 6.Bg2 gh2 7.Kf1 hg1Q 8.Kg1 (Kucharkowski-Meybohm gambit, 6 players, 10 days move)
• 1.b4 e5 2.Bb2 f6 3.e4 Bb4 4.Bc4 (Sokolski gambit, 4 players, 3 days/move)
• 1.c4 Nf6 2.b4 (English orangutan, 4 players, 3 days/move)
• 1.e4 c5 2.b4 (Sicilian: Wing gambit, 4 players, 10 days/move)
• 1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 (French: Wing gambit, 4 players, 3 days/move)