Spanton (1911) - Urs Scheidegger (1809)
Blackmar-Diemer Gambit
1.e4 d5 2.d4!? dxe4 3.Nc3 Nf6 4.f3 Bf5!? 5.g4 Bg6 6.g5 Nd5 7.Nxe4 e6
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| So far, all as in round one |
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8.Ne2!?
This is second in popularity in ChessBase's 2026 Mega database to 8.c4, but is not liked by Stockfish18 or Dragon1.
8...f5?!
Apparently a novelty, and probably not a good one. The engines suggest 8...Nc6 or 8...h6!?
9.N4g3
White is slightly better after 9.gxf6, according to the engines, eg 9...Nxf6 10.Ng5!?, or 9...gxf6 10.c4!?, and if 10...Bb4+?!, then 11.Kf2!
9...Be7 10.f4 Bb4+?
There is no logic to this move.
11.c3 Bd6?!
The engines recommend eating humble pie with 11...Be7!?
12.Bg2 c6
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| How should White proceed? |
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13.c4!?
Strong (and would have been even stronger at move 12), but needs to be followed up correctly. Also good is 13.h4.
13...Bb4+?!
The d5 knight should probably retreat to c7 or e7.
14.Bd2??
White is winning after moving the king, eg 14.Kf2!? Ne7 15.Qb3 a5 16.a3 Bd6 17.Qxb7, or 15...Qb6 16.c5 Qb5 17.Qxe6.
14...Ne3 15.Qb3
Objectively best, or rather least worst, may be 15.Bxb4!? Bxd1 16.Rxd1.
15...Nxg2+ 16.Kd1 Bxd2 17.Qxb7 Nd7 18.Kxd2 Rb8 19.Qxc6 Nh4
Even stronger is the engines' 19...Rxb2+!, eg 20.Kc1 Qb8!, and if 21.Qxg2, then 21...Qb4! 22.Rd1 Qa3!
20.Qxe6+
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| What should Black play? |
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20...Kf8!
Despite the white queen looking so menacing, it is White's king that is in greater danger, which is why 20...Qe7 21.Qxe7+ Kxe7 21.b3 would be a great relief.
21.Kc2 Rb6?!
Probably better are two suggestions of the engines, 21...Qc7 and 21...h6.
22.Qe3 Qb8 23.Qa3+ Kf7 24.Nc3?
The engines give 24.Rac1!?, preparing to bring the king to (relative) safety on b1, while at the same time developing a piece.
24...Nf3?
Stronger are 24...Qxf4 and 24...Ng2.
25.Nd5?
25.Rad1 equalises (Dragon1) or comes close to it (Stockfish18).
25...Nxd4+! 26.Kd3 Rd6 27.Kxd4 Rxd5+!
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| This exchange sacrifice leaves the white king helpless |
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28.cxd5 Qxf4+ 29.Kd3 Ne5+ 30.Kc2
Or 30.Ke2 Re8.
30...Qc4+
Much stronger is 30...Rc8+, but the text is plenty good enough, and Black's winning route is arguably a matter of taste.
31.Kd1?
31.Kd1?
There was more hope in 31.Qc3 f4+ 32.Kc1, eg 32...Qxc3+ 33.bxc3 fxg3 34.hxg3, when White has rook and two pawns for bishop and knight, but White's pawns are chronically weak, and the engines reckon Black's advantage is about equivalent to being up a piece.
31...Qxd5+ 32.Ke2 Qg2+ 33.Kd1
Or 33.Ke1 Nf3+.
33...Rd8+ 34.Kc1 Qd2+ 35.Kb1 f4+ 0-1
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