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Daily Quiz 1/11: GNU 4-ply evals

Posted By: Timothy Chow
Date: Sunday, 15 January 2012, at 7:16 p.m.

In Response To: Daily Quiz 1/11 (Daily Quiz)

The score is: gnubg 3, tchow 5 (match to 7 points)

gnubg	125
tchow	110
Position ID: tjXBYAJbnMENAA Match ID: UYnpADAAKAAA

• tchow moves 8/5*/3

Alert: bad move ( -0.061)

#		Ply	Move	Equity
	1	4	13/8	+0.047
			0.611 0.136 0.003 - 0.389 0.088 0.002
•	2	4	8/5*/3	-0.014 ( -0.061)
			0.609 0.229 0.009 - 0.391 0.116 0.003

For money:

gnubg	125
tchow	110
Position ID: tjXBYAJbnMENAA Match ID: UQkNADAAKAAA

• tchow moves 8/5*/3

#		Ply	Move	Equity
•	1	4	8/5*/3	+0.569
			0.609 0.230 0.010 - 0.391 0.120 0.004
	2	4	13/8	+0.417 ( -0.152)
			0.602 0.084 0.002 - 0.398 0.075 0.002

---

GNU inverts the board for some reason, so White is on roll below. Blue can take more deeply ATS than for money, but I underestimated how much difference White's distribution of checkers matters.

The score is: gnubg 0, tchow 1 (match to 5 points)

gnubg on roll, cube decision?

gnubg	59
tchow	79
Position ID: t20DwAB3WwcEAA Match ID: MAGgAAAACAAA

• gnubg doubles

Cube decision
4-ply cubeless equity		+0.608	(Money: +0.610)
	0.806 0.002 0.000 - 0.194 0.005 0.000
Cubeful equities:
1.	Double, pass	+1.000
2.	Double, take	+1.053	+0.053
3.	No double	+0.677	-0.323
Proper cube action:		Double, pass

 

Variant:

The score is: gnubg 0, tchow 1 (match to 5 points)

gnubg on roll, cube decision?

gnubg	66
tchow	79
Position ID: t20DwADbdgcEAA Match ID: MAGgAAAACAAA

• gnubg doubles

Cube decision
4-ply cubeless equity		+0.536	(Money: +0.537)
	0.770 0.002 0.000 - 0.230 0.004 0.000
Cubeful equities:
1.	Double, take	+0.863
2.	Double, pass	+1.000	+0.137
3.	No double	+0.654	-0.209
Proper cube action:		Double, take

 

---

I can believe that 23/16 is best but I'm surprised that GNU 4-ply thinks that 16/11 8/6 is a whopper. It would be good to see a rollout here.

The score is: gnubg 1, tchow 2 (match to 7 points)

gnubg	198
tchow	150
Position ID: 4O0AMGaMeeEREA Match ID: cInqABAAEAAA

• tchow moves 16/11 8/6

Alert: very bad move ( -0.114)

#		Ply	Move	Equity
	1	4	23/16	+0.613
			0.644 0.223 0.010 - 0.356 0.065 0.001
	2	4	16/11 13/11	+0.579 ( -0.034)
			0.629 0.242 0.013 - 0.371 0.072 0.001
	3	4	23/21 16/11	+0.553 ( -0.060)
			0.628 0.230 0.012 - 0.372 0.073 0.002
	4	4	16/9	+0.551 ( -0.062)
			0.628 0.231 0.012 - 0.372 0.069 0.001
	5	4	23/21 13/8	+0.524 ( -0.089)
			0.622 0.230 0.012 - 0.378 0.074 0.001
	6	4	23/21 9/4	+0.520 ( -0.093)
			0.622 0.224 0.012 - 0.378 0.083 0.002
	7	4	9/4 8/6	+0.513 ( -0.099)
			0.615 0.236 0.013 - 0.385 0.083 0.002
	8	4	16/11 9/7	+0.509 ( -0.104)
			0.616 0.232 0.012 - 0.384 0.075 0.002
	9	4	13/6	+0.502 ( -0.111)
			0.612 0.240 0.013 - 0.388 0.078 0.002
•	10	4	16/11 8/6	+0.499 ( -0.114)
			0.611 0.240 0.014 - 0.389 0.080 0.002

Messages In This Thread

• Daily Quiz 1/11
  Daily Quiz -- Friday, 13 January 2012, at 2:45 a.m.
  • Daily Quiz 1/11
    Timothy Chow -- Friday, 13 January 2012, at 3:25 a.m.
  • Daily Quiz 1/11
    pontiac -- Friday, 13 January 2012, at 10:33 a.m.
  • Daily Quiz 1/11
    kruidenbuiltje -- Friday, 13 January 2012, at 11:56 a.m.
  • Daily Quiz 1/11
    Mick Dyett -- Friday, 13 January 2012, at 1:47 p.m.
  • Daily Quiz 1/11: GNU 4-ply evals
    Timothy Chow -- Sunday, 15 January 2012, at 7:16 p.m.
    • Daily Quiz 1/11: GNU 4-ply evals
      Stick -- Sunday, 15 January 2012, at 8:01 p.m.
  • Daily Quiz 1/11: Rollout of Boot Camp position
    Timothy Chow -- Sunday, 22 January 2012, at 9:09 p.m.