### Championship 38 Group 1 analysis 4ir forum

6 replies. Last post: 2015-11-22

Championship 38 Group 1 analysis
• fhourplay at 2015-10-31

I used my solver to analyze all 36 games in Group 1.
22 games were played perfectly. Some of those still ended in 2:0 though, as the 2nd player timed out.
The 14 games below had suboptimal moves, which we’ll call blunders.Each blunder is preceded by an optimal alternative between parentheses and followed by a = or + to indicate that the player to move has a draw or win. The question marks in game #1724612 indicate that I have yet to pinpoint the exact ply at which the game became a draw.

Game            Player 1        Player 2        Result  Moves(Optimal)

#1724612        coeurange       grade1teacher   2 : 0   77?5?6?5=555(3)4+2242(4)2+4242214454554277777766666

#1724614        coeurange       Szandor         2 : 0   2322222253355555557(6)8+644

#1724616        coeurange       hulkenberg99    2 : 0   55676643677(4)6+447554552757533244647646711333222

#1724617        fhourplay       Nightcore       2 : 0   443222244124656(7)1=17663(1)4+1

#1724618        Nightcore       Fouracle        2 : 0   443234334(6)5+2

#1724625        fhourplay       grade1teacher   2 : 0   443222244(1)3+3133755373322224444188778866655

#1724627        fhourplay       Szandor         2 : 0   444444565556733257457(5)7+43225511112222121

#1724633        Fouracle        jl579           0 : 2   44566(6)4+4334467213334647

#1724635        santi           grade1teacher   2 : 0   443265544552522(4)5+444225547777777766666

#1724637        jl5792          grade1teacher   2 : 0   65555555337777777(4)5=4(1)4+33(1)3+(1)3+1222327223122666688888888666444

#1724638        grade1teacher   hulkenberg99    2 : 0   44445666642334433(1)3+5332124322222

#1724640        santi           jl579           2 : 0   55555455?444214877(4)7+727577722222233333344463636

#1724642        jl579           Szandor         2 : 0   344444442222222(5)6+66773

#1724643        Szandor         hulkenberg99    0 : 2   55555543766663433337871(5)1+(5)1+513

Here’s a ranking of players ordered by number of points blundered:

fhourplay       0

santi           0

coeurange       1

Nightcore       2

Fouracle        2

jl579           6

hulkenberg99    6

Szandor         8

Congratulations to santi for perfect play without the help of a solver!

Curiously, there is 1 point blundered on average over all 36 games.

I am in the process of preparing a public github repository with the code and opening book for the 8x8 solver.

Stay tuned...

• santi at 2015-11-01

thanks for shearing the analisys. congrats, seems your code works.I will stay tunned abour your research!

• mmKALLL at 2015-11-01

Care to explain why it’s possible to lose games with perfect play i.e. no blunders?

• z at 2015-11-01

fhourplay, how close are you to solving 8x8?

• Loony at 2015-11-01

As the second player has a theoretical win you can lose by going first.

He already solved it.

• fhourplay at 2015-11-22

#1724612        coeurange       grade1teacher   2 : 0   77?5?6?5=555(3)4+2242(4)2+4242214454554277777766666
I have since confirmed that the position after 775 is a draw, with 6 the only drawing move. So the above becomes
#1724612        coeurange       grade1teacher   2 : 0   77?5=65555(3)4+2242(4)2+4242214454554277777766666

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