Thomas Krüger (1558) - Spanton (1831)
Colle System
1.d4 e6 2.Nf3 d5 3.e3 Bd6!?
This somewhat unusual move has been played by Tarrasch and Janowski. One idea is to get in a quick ...e5.
4.Bd3
The normal reply but 4.c4 is an obvious alternative that inhibits ...e5.
4...Nc6
And normal here for Black is to transpose into a Dutch Stonewall with 4...f5.
5.c3!?
This seems rather passive, although White scores very well with it from limited outings in ChessBase's 2020 Mega database.
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| Now Black gets to implement the ...e5 break |
5...e5 6,dxe5 Nxe5 7.Nxe5 Bxe5 8.Nd2 Nf6 9.Nf3 bd6 10.h3 0-0 11.Qc2 Re8 12.Nd2?
A new move, and not a good one. White should get his king to safety before trying for the pawn-break e4.
12...c5 13.0-0 Qe7 14.b3 Ne4 15.Bxe4?
The black knight had to be left where it was, eg 15.Nxe4? dxe4 also leaves White's king in great danger. Stockfish11 suggests 15.f4!?, which is anti-positional but not immediately catastrophic.
15...dxe4 16.Rd1
This is best, according to Stockfish11 and my other main analysis engine Komodo11.01.
16...Qe5 17.Nc4?
Best, according to the engines, is 17.Nf1, but with a clear advantage for Black. Note that 17.Nxe4? loses to 17...Qh2+ 18.Kf1 Qh1+ 19.Ke2 Qxg2, when both 20.Nxd6 and 20.Rxd6 are well met by 20...Bxh3.
17...Qh2+ 18.Kf1 Bc7 19.Nd2
There is no defence, eg 19.Ba3 is simply met by 19...b6.
19...Qh1+ 20.Ke2 Qxg2 21.Bb2 Bxh3 0-1
If 22.Rg1 then 22...Bg4+.
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