A sa

White plays Tarrasch-style to exploit Black's 'weakness' on c5, but Griinfeld demonstrates that it is not permanent.

22...Bc8 23 £>b3 £)b7 24 «d4 c5 25 bxc5 We7 26 Be3 £ixc5 27 Wb4

Now it is White who has the classical weakness, at c3.

30 Bdl Wc5 31 g3 Sff8 32 Wxc5 £}xc5 33 f4 g6 34 Sfl Bfe8 35 g4 ¿he4 36 2ff3 2c4 37 £k2 £>d2 38 Sf2 ^e4 39 Bff3 Bec8 40 £id4 b4

Black exchanges a static advantage for a dynamic one.

41 £ixe6 bxc3 42 Sfl 2e8 43 f5 gxf5 44 gxf5 7 45 2cl Sxe6 46 fxe6+ &xe6 47 <&g2 <&xe5 48 <&f3 Bc6 49 &e2 d4 50 Bf3 5 51 &d3 £ic5+ 52 &c2 &c4 53 2f4 2e6 54 2g4£e2+55&bl £d3 0-l

After World War I, family circumstances forced Griinfeld to turn professional and he is remembered now as one of the founders of the hy-permodern school. One of his greatest successes was his first prize at Meran 1924 but think what he might have achieved had he learned the game in childhood! Unfortunately he does not appear to have played CC much in the decades after 1918 when it began to flourish on the continent of Europe. One of GrUnfeld's last contributions to CC was his excellent openings survey in the book of the Dyckhoff Memorial, a giant CC tournament played from 1954-6 to commemorate Dr Eduard Dyckhoff (1880-1949).

Dyckhoff was one of the special heroes of CC, players who concentrated almost exclusively on CC.

The modern era of postal chess really begins with Dyckhoff, a doctor of law from Augsburg, Germany. Quite apart from being a very strong player, he did much to develop CC in Germany and throughout Europe. He learned chess at 14 but was a strong player by 20 when he won an important tournament in Munich. Dr Dyckhoff twice won the Bavarian Championship, in 1913 and 1942. He was very active in the organisation of chess in Bavaria and from 1930 to 1934 he edited the original Fernschach magazine. He was also recognised as an opening theoretician, both for his analysis of the Queen's Gambit (Orthodox and Tar-rasch defences) and in the Spanish, where both Euwe and Keres gave him credit for discovering the strong reply 4 £)c3! against the Schliemann (Jaenisch) variation (1 e4 e5 2 £}f3 &c6 3 Xb5 f5).

Dr Dyckhoff played postal chess for 50 years, his peak being from 1929-37 when the organisation of master-strength international CC events was really flourishing for the first time with the foundation of the first international governing body, the International Fernschach bund (IFSB) in 1928. In five IFSB championships, he played 50 games (29 wins) against top opposition without loss. He played top board for Germany in the ÏFSB Olympiad (1935-9). Unfortunately the outbreak of war then delayed the start of the world championship until it was too late for him. He would have been a major contender had it been held in the late 1930s or even the early 1940s.

Here is one of his wins (against a player from Czechoslovakia) from the 1930 IFSB Championship, in which he took first prize.

F. Batik - Dyckhoff

7930 IFSB Championship

1 d4 d5 2 c4 e6 3 &c3 c5 4 cxd5 exd5 5 £>f3 £>c6 6 g3 £>f6 7 £g2 &e7 8 0-0 0-0 9 dxc5 d4!?

This is Tarrasch's own gambit, which is not easy to refute.

Nowadays Fine's 11 Jfc.f4 is considered critical, but that move was apparently not tried until the 1940s. In the 1936-7 IFSB Championship, against N.Johansson (Sweden), Dr Dyckhoff met 11 a3 with ll...£te4 when instead of 12 b4 White made the instructive error 12 e3? and an exciting struggle ensued: 12...d3 13 b4 J.f6 14 Ab2 £xb2 15 £>xb2 £c3 (Black has a good position but the game is far from over) 161Brb3 Wf6 17 £jc4 &c6 18 <&hl &e4! 19 Wxd3 £>xf2+ 20 2xf2 itxal+ 21 Bfl

£xc4 22 Wxc4 Wxa3 23 £>g5! (with a dangerous counter-attack to which Black finds the answer) 23...Wxb4 24 lfd5 SadB 25 #f5 g6 26 ^f6 Wb3 27 h4 Ed I 28 Exdl Wxdl + 29 &h2 a5! (this is the only way to play for a win) 30 £ie4 (if 30 Wb2, then 30...a4 31 <&e4 HKb3 32 tfal a3!) 30...a4 31 &f3! Wb3! 32 h5 a3 33 &g2 Wb2 34 &c3 £>e7! 35 e4 h6 36 Wxe7 Wxc3 37 c6 bxc6 38 e5 a20-l.

Now we return to the Batik game: ll...£e4 12 f3 £d5 13

Here 13 e4 is probably necessary.

13...iLe6! 14 £)xe7+ ^xe7 15 &g5 &c4 16 Sel h6 17 jLxf6 ^xf6 18 b3 £.a6 19 0d2 fife8 20 £tb2 Ee3! 21 fiacl 2ae8 22 i.fl £>e5 23 f4 £)g4 24 £>c4 3ixc4 25 Sxc4 (D)

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