Enumerating all 3-ply openings

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PunchboxNET

Also with e4 b5, a6 is blocked for the bishop

PunchboxNET

same for d4 g5

Yigor
PunchboxNET wrote:

Also with e4 b5, a6 is blocked for the bishop

 

Wow, nice remark! peshka.png I'll correct it. 😎

Yigor

Done. Now we should calculate it for 1. a3 - 1. h3 as well as for 4 knight moves. settings.png

PunchboxNET

Ok not today

Ilampozhil25

e4 d5 nc3 and nc3 d5 e4 are counted as seperate, when they are not

Yigor
Ilampozhil25 wrote:

e4 d5 nc3 and nc3 d5 e4 are counted as seperate, when they are not

 

The question of transpositions will be settled later (cf. the first post). peshka.png

PunchboxNET

From 1. a3-h3 is 3598 moves

Yigor
PunchboxNET wrote:

From 1. a3-h3 is 3598 moves

 

All right, we will believe U. settings.pngpeshka.png

Ilampozhil25

1.Nf3 xx is 5+1+14+2=22 x 20= 440

same for 1.Nc3

1.Nh3 xx is 3+1+14+2=20 x 2-= 400

same for 1.Na3

so 3744 + 3598 + 1680 = 9022 openings after 3 ply