[Retros] Shortest Knight Double Checkmates

[Hirokaz ONODA]

Hi,

Knight Double Checkmates seem relatively rare.
Here is a list of the games classified by the last move, where I added some
games.
Any other games?

Amici Sumus,
Hiro


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Shortest Knight Double Checkmates
---------------------------------

(As for Double Checkmates at the moment of promotion, see Pawn Mates)


--- Knight to the 8th rank ---
No games.


--- Knight to the 7th rank ---

[...Nc2] 1.d4 Nf6 2.Bf4 Nd5 3.Bxc7 Nb4 4.Bxb8 Qa5 5.Bc7 Nxc2# (Francois
Labelle, 2004)
[Nc7] invisible: 1.f4 Nf6 2.f5 Ne4 3.f6 Nxd2 4.fxe7 Nxb1 5.exf8N Nc3 6.Ne6
Nxe2 7.Qxe2 Rf8 8.Nxc7# (Hirokaz Onoda)

[...Nf2] 1.g3 Nf6 2.Bh3 Ne4 3.Bxd7 Bxd7 4.Nh3 Bc6 5.O-O Qd7 6.Kh1 Kd8 7.Rg1
Nxf2# (Hirokaz Onoda)

[Ng7] invisible: 1.f4 Nf6 2.f5 Ne4 3.f6 Nxd2 4.fxe7 Nxb1 5.exf8N Nc3 6.Ne6
Nxe2 7.Qxe2 Rf8 8.Nxg7# (Hirokaz Onoda)


--- Knight to the 6th rank ---

[...Nd3] 1.d4 Nf6 2.Bf4 Nd5 3.Bxc7 Nb4 4.Bxb8 Qa5 5.Bc7 Nd3# (Francois
Labelle, 2004)
[Nd6] 1.e3 d6 2.Qh5 Bh3 3.Nxh3 g5 4.Nxg5 Nf6 5.Nxf7 Nfd7 6.Nxd6# (Noam D.
Elkies, 1996)

[...Nf3] 1.d3 Nf6 2.Bf4 Ne4 3.Bxc7 Nd2 4.Bd6 Qa5 5.Bc5 Nf3# (Noam D.
Elkies, May 1996)
      captureless: 1.Nf3 Nc6 2.Ne5 Nd4 3.Nc4 e5 4.f4 Qf6 5.Kf2 Qb6 6.Kg1
Nf3# (Unto Heinonen, 1996)
[Nf6] captureless: 1.Nf3 d5 2.Ne5 Bf5 3.Nd7 e5 4.c3 Ne7 5.Qa4 Rg8 6.Nf6#
(Goeran Wicklund, 1996)

[...Ng3] 1.g3 Nf6 2.Bh3 Ne4 3.Bxd7 Bxd7 4.Nh3 Bc6 5.O-O Qd7 6.Kh1 Kd8 7.Rg1
Nxg3 (Hirokaz Onoda)


--- Knight to the 5th rank ---

[...Nb4] 1.e3 a6 2.Bxa6 Ra7 3.Bb5 Na6 4.Bxd7 Bxd7 5.d3 Be6 6.Kd2 Bxa2 7.Kc3
Bxb1 8.Kb3 Bxc2 9.Ka2 Nb4# (Hirokaz Onoda)

[Nc5] captureless: 1.d3 d6 2.Nd2 Kd7 3.Nb3 Kc6 4.Bd2 Kb5 5.c4 Ka4 6.Nc5#
(Hirokaz Onoda)

[...Nd4] captureless: 1.d3 d5 2.Kd2 Qd6 3.Kc3 Qa6 4.Kb4 Qa3 5.Kb5 Nc6 6.c3
Bd7 7.Qc2 Nd4# (Hirokaz Onoda)

[...Ne4] 1.f3 e6 2.Kf2 Qf6 3.Kg3 Qxf3 4.Kh4 Nf6 5.Kg5 Be7 6.h4 Ne4#
(Hirokaz Onoda)

[...Ng4] 1.d3 h6 2.Bxh6 Rh7 3.Bg5 Nh6 4.Bxe7 Bxe7 5.Kd2 Bd6 6.Ke3 Bxh2
7.Kf3 Bxg1 8.Kg3 Bxf2 9.Kh2 Ng4# (Hirokaz Onoda)


--- Knight to the 4th rank ---

[...Nc5] 1.e3 a6 2.Bxa6 Ra7 3.Bb5 Na6 4.Bxd7 Bxd7 5.d3 Bf5 6.Kd2 Bg6 7.Kc3
Qd4 8.Kb3 Qxb2 9.Ka4 Nc5# (Hirokaz Onoda)

[Ne4] captureless: 1.c4 g6 2.Qb3 Bh6 3.Qh3 Kf8 4.d3 Kg7 5.Nd2 Kf6 6.Rb1 Kg5
7.Ne4# (Ulrich Ring, 2002)
[...Ne5] 1.g3 e6 2.Bg2 Qg5 3.Bxb7 Nc6 4.Ba6 Bb7 5.Kf1 O-O-O 6.Kg2 Kb8 7.Kf3
Ne5# (Hirokaz Onoda)

[...Nf5] 1.d3 h6 2.Bxh6 Rh7 3.Bg5 Nh6 4.Bxe7 Qxe7 5.f4 Kd8 6.Kf2 Qxe2 7.Kg3
Qxg2 8.Kh4 Nf5# (Hirokaz Onoda)

 
--- Knight to the 3rd rank ---
No games.

--- Knight to the 2nd rank ---
No games.

--- Knight to the 1st rank ---
No games.



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