(1) Dus Chotimirsky,Fedor Ivanovich - Rotlewi,Georg A [C10]
Karlsbad-02 International Masters Karlsbad (18), 14.09.1911

1.e4 e6
The French Defence an opening that has retained its popularity to this day.

2.d4 d5 3.Nc3 dxe4
The Rubinstein variation which has long led to diverse opinions amongst opening theorists. It gives up the centre but allows Black piece play with Nf6 and possibly b6/Bb7. It can be noted, though, that in recent years it has been played by Carlsen and Ivanchuk, and very often by Gelfand.

4.Nxe4 Nd7
Apart from this line Black has a range of other plans here such as [4...Bd7 as for instance in So-Carlsen, chess.com Blitz 2017.; 4...Nf6 for example, Ivanov-Nakamura, Philadelphia National Open 2006.; 4...Be7 as played in Magem Badal-Hodgson, FRA-tch 1999 for example. These options indicate the position is quite flexible and can be played in different ways to suite a very diverse range of player styles.]

5.Bd3 Ngf6 6.Nxf6+ Nxf6 7.Nf3 Be7
Other popular lines here are [7...c5 8.dxc5 Bxc5 9.0-0 0-0 10.Bg5 ; and also 7...b6 8.Qe2 Bb7 9.Bg5 ]

8.0-0 0-0 9.Bg5 b6 10.Qe2 Bb7 11.Rad1 Qd5
On this square the queen is somewhat exposed despite bearing down on the long diagonal to White's g2. Instead, Black can obtain a more or less equal game with the lines [11...h6 12.Bf4 Bd6 13.Ne5 ; or 11...Bxf3 12.Qxf3 Qd5 13.Qxd5 Nxd5 14.Bd2 ]

12.c4 Qd6
Its interesting to note this seems to have only been played in this old game. More recent games has featured, in a dozen or more games, the inferior [12...Qa5 13.Ne5 Rad8 (grabbing a pawn with 13...Qxa2 is just a disaster, for example, 14.Ra1 Qb3 15.Bxf6 Bxf6 (or if 15...gxf6 16.Bc2 (or even 16.Qg4+ Kh8 17.Qh4+- ) 16...Qb4 17.Ra4+- ) 16.Ra3+- ) 14.Bb1 and White has a significant edge as in Degerman-Berkell, Rilton Cup, Stockhom 1987.]

13.Ne5 Rad8
In this position Black plays a natural, but not optimum move, now White is much better once again. Superior chances were offered by exchanging some pieces with [13...Nd7 14.Qh5 f5 15.Bxe7 Qxe7 16.Rfe1 Rad8 despite creating a weak backward pawn on e6, when White is just a little better.; Also interesting but problably not quite sufficient is 13...c5 14.Bf4 cxd4 15.Ng6 Qc5 16.Nxf8 Rxf8 ; 13...Qxd4 is of course useless due to 14.Bxh7+ winning.]

Completing develpment which in reply Black immediately errs. White has another good line here of [14.Bf4 Qb4 15.a3 Qa4 16.Bc2 Qe8 17.Rfe1 with a space advantage although Black is fairly solid.]

Now Black is struggling to stay in the game. [Instead 14...h6 end up with Black obtaining R+minor piece+P for the queen 15.Bf4 Qxd4 16.Bh7+ Kxh7 17.Rxd4 Rxd4 ; 14...c5 is similar 15.d5 exd5 16.Bf4 Rfe8 (but 16...d4 fails to 17.Ng6 Qc6 (17...hxg6 18.Bxd6 ) 18.Nxe7++- ) 17.Ng6 Qe6 18.Qc2 Qxe1+ 19.Rxe1 hxg6 and, although White remains better in each case, at least Black stays in the game.]

15.Bf4 Nxe5 16.Bxe5 Qc6
Threatening mate so retarding Bxh7+ and Bxg7 ideas. [If 16...Qb4 White can play an unusual form of the Greek gift with 17.Bxh7+ Kxh7 18.a3 and White wins by gaining a tempo (Here move order is important and 18.Qh5+ instigating the double bishop sacrifice is premature and only good enough for a level game: 18...Kg8 19.Bxg7 Kxg7 20.Re3 Rg8 21.Rg3+ Kf8 22.Qh6+ Ke8 23.Rxg8+ Kd7= ) 18...Qa5 19.Qh5+ Kg8 20.b4 Qxa3 21.Re3 (21.Bxg7 again doesn't quite work and only draws after 21...Kxg7 22.Qg4+= since if 22...Kh7 23.Re3 then Black defends with 23...Qxe3 ) 21...Qa4 22.Bxg7+- ; Alternatively 16...Qd7 once more requires some precision from White in the way material is sacrificed 17.Bxh7+ (17.Bxg7 is also good 17...Kxg7 18.Qg4+ Kh8 19.Bxh7 Kxh7 (or if 19...Rg8 20.Qh3 (but not 20.Qh5 Rxg2+ 21.Kf1 Kg7-+ and Black wins.) 20...Bxg2 (20...Rxg2+ 21.Kf1 Kg7 22.d5 Rg5 23.f4+- ) 21.Qh6+- ) 20.Re3+- ) 17...Kxh7 18.Qh5+ Kg8 19.Bxg7 Kxg7 20.Rd3 Rh8 21.Rg3+ Bg5 22.Qxg5+ Kf8 23.d5+- ]

[17.Be4 disipates all of White's advantage after 17...Qxe4 18.Qxe4 Bxe4 19.Rxe4=/+ ]

[Now 17...g6 does fail to 18.Be4 ]

Very strong. Relatively poor is, instead, [18.Be4 Qxc4 19.b3 Qb4 20.Qxe6+ Kh8 21.Bxb7 fxe5 and White is just a touch better.]

[18...exd5 offers no respite due to 19.cxd5 Rxd5 (19...Qd7 20.Bf5 Qe8 21.Bxc7+- ) 20.Bc4+- and White wins more material in each line.]

19.dxe6 Qc6
[19...Qa4 leaves the quuen offside and White may win, for instance, via 20.Bxc7 Rc8 21.Qh5 f5 22.Bxf5 Rxf5 23.Qxf5 Rxc7 24.Qf7+ Kh8 25.Rd8+ Bxd8 26.Qf8# ]

White has won a pawn and consolidates his position before moving onto to the decisive attack against Black's exposed kings-side.

20...Qc5 21.h4
Preventing Black simplfiying with Qg5.

21...a5 22.a3 Kh8 23.Re3
[23.b4 is also more than good enough but White continues with the kings-side attack.]

[23...a4 prevents b4 plans but White presses on relentlessly with the attack. A possible line is 24.Rg3 Rg8 25.Bxh7 Kxh7 26.Qg6+ Kh8 27.Rxd8 ]

24.Bxh7 Rxd1+
[24...Kxh7 cannot be played due to 25.Re5 (25.Rd5 is bad as Black survives and is much better after 25...Rxd5 ) 25...fxe5 26.Qh5# ]

25.Qxd1 Rd8 26.Bd3 Kg8 27.Qg4 Qc6 28.Rg3
[28.Rg3 defends g2 and threatens mate on g7 so Black resigns since 28...Bf8 allows simply 29.e7 winning easily.] 1-0