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O'Hagan's 22 revisited

Posted By: Timothy Chow
Date: Monday, 6 September 2010, at 6:03 p.m.

I played around with some variants of O'Hagan's middle game 22. I don't think I'm going to roll any of these out but even the 2-ply evals are kind of interesting.

Note that I've switched the score to money.

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Original position:

gnubg	125
tchow	161
Position ID: OM/BBwBYZ8mAMA Match ID: cAkJAAAAAAAA

#		Ply	Move	Equity
	1	2	24/18 20/18	-0.368
			0.390 0.072 0.001 - 0.610 0.112 0.003
	2	2	24/20 9/5	-0.455 ( -0.086)
			0.355 0.066 0.001 - 0.645 0.088 0.002
	3	2	24/20 11/7	-0.461 ( -0.093)
			0.355 0.066 0.001 - 0.645 0.091 0.002

---

Variant 1:

gnubg	121
tchow	161
Position ID: OM8xBwBYZ8mAMA Match ID: cAkJAAAAAAAA

#		Ply	Move	Equity
	1	2	24/20 9/5	-0.479
			0.352 0.064 0.001 - 0.648 0.097 0.002
	2	2	24/20 11/7	-0.489 ( -0.010)
			0.351 0.065 0.001 - 0.649 0.102 0.002
	3	2	24/20 11/9 8/6	-0.518 ( -0.039)
			0.342 0.063 0.001 - 0.658 0.102 0.002
	4	2	24/20 9/7 8/6	-0.521 ( -0.042)
			0.344 0.065 0.001 - 0.656 0.105 0.002
	5	2	24/20 11/9 5/3	-0.525 ( -0.046)
			0.341 0.061 0.001 - 0.659 0.104 0.002
	6	2	24/20 9/7 5/3	-0.528 ( -0.048)
			0.343 0.064 0.001 - 0.657 0.108 0.003
	7	2	24/20 11/9 6/4	-0.532 ( -0.052)
			0.340 0.061 0.001 - 0.660 0.106 0.002
	8	2	24/20 9/7 6/4	-0.532 ( -0.053)
			0.342 0.063 0.001 - 0.658 0.108 0.002
	9	2	24/18 20/18	-0.535 ( -0.056)
			0.360 0.064 0.001 - 0.640 0.144 0.004

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Variant 2:

gnubg	119
tchow	161
Position ID: OM8ZBwBYZ8mAMA Match ID: cAkJAAAAAAAA

#		Ply	Move	Equity
	1	2	24/20 9/5	-0.550
			0.335 0.057 0.001 - 0.665 0.103 0.002
	2	2	24/18 20/18	-0.552 ( -0.003)
			0.353 0.059 0.001 - 0.647 0.148 0.004
	3	2	24/20 11/7	-0.565 ( -0.015)
			0.333 0.057 0.001 - 0.667 0.109 0.002
	4	2	24/20 9/7 8/6	-0.591 ( -0.041)
			0.326 0.056 0.001 - 0.674 0.110 0.002

---

Variant 3:

gnubg	117
tchow	161
Position ID: OM8NBwBYZ8mAMA Match ID: cAkJAAAAAAAA

#		Ply	Move	Equity
	1	2	24/20 9/5	-0.613
			0.325 0.055 0.001 - 0.675 0.112 0.002
	2	2	24/20 11/7	-0.639 ( -0.026)
			0.319 0.053 0.001 - 0.681 0.117 0.003
	3	2	24/18 20/18	-0.650 ( -0.036)
			0.341 0.057 0.001 - 0.659 0.168 0.006
	4	2	24/20 9/7 8/6	-0.676 ( -0.063)
			0.313 0.053 0.001 - 0.687 0.122 0.003

---

Variant 4:

gnubg	125
tchow	165
Position ID: OM/BBwDQZ8mAMA Match ID: cAkJAAAAAAAA

#		Ply	Move	Equity
	1	2	24/20 6/4(2)	-0.495
			0.349 0.064 0.001 - 0.651 0.102 0.002
	2	2	24/18 20/18	-0.542 ( -0.047)
			0.354 0.064 0.001 - 0.646 0.148 0.004
	3	2	24/20 11/9 6/4	-0.543 ( -0.048)
			0.338 0.061 0.001 - 0.662 0.108 0.002