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Alexander Tolush vs John Crittenden Thompson
Simul (1954) (exhibition), London ENG, Jan-13
Modern Defense: Queen Pawn Fianchetto (A40)  ·  0-1



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Kibitzer's Corner
Premium Chessgames Member
  GrahamClayton: Crittenden defeats Tolush with his Hippopotamus Opening, so named because the pawn structure represents a sleeping hippo.
Premium Chessgames Member
  roberts partner: Thompson is the player's surname, not his first name as wrongly stated above by

From Wiki:

The term "Hippopotamus Defence" was also used by the English amateur J. C. Thompson to describe a system of his devising, where Black played c6, d6, e6, and f6; developed his knight, via h6, to f7; and did not necessarily fianchetto his bishops. As White, Thompson played the mirror-image of this. Thompson advocated this system in his 1957 book Hippopotamus Chess Opening.[1

Feb-27-22  jerseybob: Playing this game over, I had a weird optical illusion: I thought white's 10th move, 10.Bxf7+, was an unsound sac of bishop for pawn, and nearing the end of the game I wondered, where's black's extra piece? I had a similar illusion in a skittles game at the Marshall about 20 years ago as black in a Najdorf, mixing up the move order in an exchange sac on the c-file, thinking I had traded rook for knight and pawn when I was actually down a whole rook! I didn't realiize the error until my planned "attack" was suddenly a piece short. Amazingly I won when he missed a flat out refutation.
Premium Chessgames Member
  fredthebear: 32...Qxb2+ was better IMHO. Black eventually got active on the queenside for superiority.

I regard Bg7 and Ne7 as the more common (and seemingly more reliable) Hippopotamus Defense variation:

Also keep in mind the North Sea Defense as occasionally played by Magnus Carlsen:

Most players are better off playing in and through the center (which is not to say one must immediately occupy the center). Knights cover more squares when positioned in the big center (16 squares). I'd much rather have a Nf6 than a Nf7.

B00 Sub-variants:
(Much of this below is rather poor, IMHO because it avoids the center and proper minor piece development.)

King's pawn opening
1. e4

Hippopotamus defence
1. e4 Nh6 2. d4 g6 3. c4 f6

Corn stalk defence
1. e4 a5

Lemming defence
1. e4 Na6

1. e4 f5

Barnes defence
1. e4 f6

Fried fox defence
1. e4 f6 2. d4 Kf7

Carr's defence
1. e4 h6

Reversed Grob (Borg/Basman defence/macho Grob)
1. e4 g5

St. George (Baker) defence
1. e4 a6

Owen defence
1. e4 b6

Guatemala defence
1. e4 b6 2. d4 Ba6

KP, Nimzovich defence
1. e4 Nc6

KP, Nimzovich defence, Wheeler gambit
1. e4 Nc6 2. b4 Nxb4 3. c3 Nc6 4. d4

KP, Nimzovich defence
1. e4 Nc6 2. Nf3

KP, Colorado counter
1. e4 Nc6 2. Nf3 f5

KP, Nimzovich defence
1. e4 Nc6 2. d4

KP, Nimzovich defence, Marshall gambit
1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nc3

KP, Nimzovich defence, Bogolyubov variation
1. e4 Nc6 2. d4 d5 3. Nc3

KP, Neo-Mongoloid defence
1. e4 Nc6 2. d4 f6

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