[Retros] Shortest Knight Checkmates

[Hirokaz ONODA]

Hi,

I add "Single Checkmates" section.
Some games might be missing, especially around the coming-home mate.
If they are, please le me know the games.

Amici Sumus,
Hiro

---------------------------------

Single Checkmates, by Knight itself

Knight to the 8th rank
[Na]
[Nb]
[Nc]
[Nd]
[Ne] 1.d4 g6 2.d5 Bh6 3.d6 Kf8 4.dxe7 Kg7 5.exd8N d5 6.Nxb7 Nd7 7.Nd6 Nf8
8.Ne8# (Nicolas Dupont, 2006)
     Fewer captures: 1.d4 g6 2.d5 Bh6 3.d6 Kf8 4.dxc7 Kg7 5.cxd8N Kf6 6.Ne6
Bf8 7.Nc7 Kg7 8.Ne8# (Hirokaz Onoda, 2007)
[Nf]
[Ng] 1.f4 e6 2.f5 Qe7 3.f6 Qd6 4.fxg7 Nf6 5.g8N Bg7 6.Nh6 Ke7 7.d3 Rd8
8.Kd2 Bf8 9.Kc3 Ne8 10.Ng8# (Andrey Frolkin, 2006)
[Nh]

Knight to the 7th rank
[Na] 1.Nc3 d5 2.Nxd5 Be6 3.Nxe7 Kd7 4.Nc6 Kc8 5.c3 Nd7 6.Qc2 Rb8 7.Nxa7#
(Hirokaz Onoda, 2007)
[Nb] 1.c4 d5 2.c5 Qd7 3.c6 Kd8 4.cxb7 Qe8 5.bxc8N Nd7 6.Nd6 Rc8 7.Nb7#
(Hirokaz Onoda, 2007)
[Nc] 1.d4 e6 2.Bg5 Ba3 3.Nxa3 Qe7 4.Nb5 Qf8 5.Nxc7# (Francois Labelle,
2004)
[Nd] 1.c4 g6 2.c5 Bg7 3.c6 Kf8 4.cxd7 Nc6 5.dxc8N Qd7 6.Nb6 Re8 7.Nxd7#
(Hirokaz Onoda, 2007)
[Ne]
[Nf] 1.f4 c6 2.f5 Qc7 3.f6 Kd8 4.fxg7 Nf6 5.gxh8N Ne8 6.Nxf7# (Hirokaz
Onoda, 2007)
     1.e3 e5 2.Bd3 e4 3.Ne2 exd3 4.O-O dxc2 5.Kh1 cxd1N 6.Rg1 Nxf2# (Jens
Guballa, 2002)
[Ng] 1.Nf3 e6 2.Ne5 Ne7 3.Nxd7 e5 4.Nxf8 Bd7 5.Ne6 Rf8 6.Nxg7# (Goeran
Wicklund, 1996)
[Nh] 1.d3 h6 2.Bxh6 Nxh6 3.e3 Ng4 4.Be2 Rxh2 5.Kf1 Rxh1 6.Qe1 Nh2# (Hirokaz
Onoda, 2007)

Knight to the 6th rank
[Na]
[Nb]
[Nc] 1.a4 d6 2.a5 Bd7 3.a6 Qc8 4.axb7 Kd8 5.Rxa7 Be8 6.Ra6 Nd7 7.b8N Ra7
8.Nc6# (Hirokaz Onoda, 2007)
[Nd] 1.c4 Na6 2.c5 Nxc5 3.e3 a6 4.Ne2 Nd3# (Richard Stanley & Noam D.
Elkies, 1996)
     1.Nc3 c5 2.Nd5 Nc6 3.Nxe7 Rb8 4.Nxc8 Nge7 5.Nd6# (Christoph Fieberg,
2002)
[Ne] 1.e4 g6 2.e5 Bg7 3.e6 Kf8 4.exd7 Qe8 5.d8N Be6 6.Qf3 Nd7 7.Nxe6#
(Christoph Fieberg, 2002)
[Nf] 1.Nf3 g5 2.Ne5 g4 3.Nxd7 e5 4.a3 Ne7 5.Nf6# (Noam D. Elkies, 2002)
[Ng]
[Nh]

Knight to the 5th rank
[Na]
[Nb]
[Nc]
[Nd] 1.e4 e6 2.Bb5 Qg5 3.Bc6 Nxc6 4.Ke2 Rb8 5.Kf3 Nd4# (Hirokaz Onoda,
2007)
[Ne] captureless: 1.e3 b6 2.Qh5 Bb7 3.Qh6 f5 4.Nf3 Kf7 5.Rg1 Qe8 6.Ne5#
(Hirokaz Onoda, 2007)
[Nf]
[Ng] captureless: 1.b3 e6 2.Bb2 Qh4 3.Bf6 Qh3 4.f4 Nh6 5.Kf2 Rg8 6.Qe1 Ng4#
(Hirokaz Onoda, 2007)
[Nh] 1.d3 Nh6 2.Bg5 Nf5 3.Bxe7 Qxe7 4.g3 Qg5 5.Bh3 Be7 6.Kf1 Bf6 7.Kg2 Ke7
8.Qf1 Nh4# (Hirokaz Onoda, 2007)

Knight to the 4th rank
[Na]
[Nb] 1.e3 a6 2.Bxa6 Nc6 3.Bb5 Na7 4.Bxd7 Qxd7 5.Ke2 Qa4 6.Kd3 Bf5 7.Kc3
Nb5# (Hirokaz Onoda, 2007)
[Nc] captureless: 1.d3 d6 2.Kd2 Bd7 3.Kc3 Ba4 4.Kb4 Nd7 5.Ka5 b6 6.Ka6 Nc5#
(Hirokaz Onoda, 2007)
[Nd] 1.c3 d5 2.Qb3 Bg4 3.Qb4 Bxe2 4.Bxe2 Kd7 5.Bf3 Kc6 6.Ne2 Nd7 7.Nd4#
(Hirokaz Onoda, 2007)
[Ne] 1.e4 e6 2.Bb5 Qg5 3.Bxd7 Bxd7 4.Ke2 Bc6 5.Kf3 Nd7 6.Ne2 Ne5# (Hirokaz
Onoda, 2007)
[Nf] captureless: 1.e3 e6 2.Ke2 Be7 3.Kf3 Bh4 4.Kg4 Ne7 5.Kh5 g6 6.Kh6 Nf5#
(Hirokaz Onoda, 2007)
[Ng]
[Nh] captureless: 1.e3 f6 2.Qf3 Kf7 3.Qd5 Kg6 4.Nf3 Nh6 5.Nh4# (Hirokaz
Onoda, 2007)

Knight to the 3rd rank
[Na] captureless: 1.d4 d5 2.Kd2 Kd7 3.Kc3 Ke6 4.Kb4 Bd7 5.Kc5 Na6# (Hirokaz
Onoda, 2007)
[Nb] captureless: 1.d3 f6 2.Qd2 Kf7 3.Qf4 Ke6 4.Nd2 Kd5 5.Qf5 Kd4 6.Nb3#
(Hirokaz Onoda, 2007)
[Nc] captureless: 1.d3 e6 2.Kd2 Qg5 3.Kc3 Ne7 4.Kd4 Qg4 5.Ke5 Nec6#
(Hirokaz Onoda, 2007)
[Nd]
[Ne]
[Nf] captureless: 1.e3 f5 2.Qf3 Kf7 3.Bc4 Kf6 4.Qc6 Ke5 5.Nf3# (Goeran
Forslund, 1996)
[Ng] captureless: 1.f3 e6 2.Kf2 Qf6 3.Kg3 Qf5 4.Kh4 Ne7 5.g3 Ng6# (Hirokaz
Onoda, 2007)
[Nh] captureless: 1.e4 e5 2.Ke2 Ke7 3.Kf3 Kd6 4.Kg4 Be7 5.Kf5 Nh6# (Hirokaz
Onoda, 2007)

Knight to the 2nd rank
[Na]
[Nb]
[Nc]
[Nd] captureless: 1.d4 d5 2.Kd2 Be6 3.Kc3 Qd7 4.Kb4 Qa4 5.Kc5 Nd7# (Hirokaz
Onoda, 2007)
[Ne] captureless: 1.e4 e5 2.Ke2 Ke7 3.Kf3 Kd6 4.Kg4 Qh4 5.Kf5 Ne7# (Hirokaz
Onoda, 2007)
[Nf]
[Ng]
[Nh]

Knight to the 1st rank
[Na]
[Nb] captureless: 1.d3 d6 2.Bd2 Kd7 3.Ba5 Kc6 4.Qd2 Kb5 5.Qc3 Ka4 6.Nd2 b5
7.b3 Ka3 8.Nb1# (Hirokaz Onoda, 2007)
[Nc]
[Nd]
[Ne]
[Nf]
[Ng] captureless: 1.f3 e6 2.Kf2 Be7 3.Kg3 Bh4 4.Kg4 Qf6 5.Kh5 Ne7 6.g4 g6
7.Kh6 Ng8# (Hirokaz Onoda, 2007)
     1.Nf3 d6 2.Nd4 Kd7 3.Nc6 Ke6 4.Nxb8 Kf5 5.Nc6 Kg4 6.Nd4 c6 7.g3 Qa5
8.Bg2 Qh5 9.Bf3 Kh3 10.e4 g5 11.Ne2 Bh6 12.Ng1# (Olli Heimo, 2006)
[Nh]

--------------------------------


Discovered Checkmates
in which the last move's Knight takes part in forming the mating net

1.a4 c6 2.a5 Qb6 3.axb6 Kd8 4.bxa7 b6 5.axb8N Bb7 6.Rxa8 Ba6 7.Nxa6# (Noam
D. Elkies, 2002)
1.e3 Nc6 2.Ke2 Nd4 3.Kd3 c6 4.Ne2 Qa5 5.Ng3 Qd5 6.Be2 Nb5# (Andrew
Buchanan, 2002)
1.Nc3 f6 2.Nd5 Kf7 3.c3 Ke6 4.Qa4 Kd6 5.Qd4 e6 6.a4 Qe7 7.Nb4# (Andrew
Buchanan, 2002)
1.h4 f6 2.h5 Kf7 3.h6 Kg6 4.Nh3 Kh5 5.f4 g6 6.Nf2# (Noam D. Elkies, 2002)



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