Game number 2

Moshe Tissona (1 pts) vs. Jon Royset (0 pts) (Match to 25)

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Match Information

Moshe Tissona's rating: 0 (Exp 0)
Jon Royset's rating: 0 (Exp 0)
Date: July 13, 2003
Event: World Championship 2003
Round: Final
Place: Monte Carlo
Annotator: Casper van der Tak, Chuck Bower, Alex Zamanian, Tom Suzanski, Christian Toth and GNU 0.14

Annotation

Casper van der Tak:

Introduction

Both players make their 4-point, and start developing semi-primes. Tissona fills in his five-point. When Royset leaves a blot to make his 5-point, Tissona hits with a 61 joker, and Royset dances. Tissona's double comes right at the border between take and drop, and Royset elects to let one go.

Move number 1: Moshe Tissona to play 42

+-12-11-10--9--8--7-+---+--6--5--4--3--2--1-+

+-13-14-15-16-17-18-+---+-19-20-21-22-23-24-+

Pip counts: Moshe Tissona 167, Jon Royset 167
Position ID: 4HPwATDgc/ABMA Match ID: MAAqAxAAAAAA

• Moshe Tissona moves 8/4 6/4

#		Ply	Move	Equity
•	1	2	8/4 6/4	+0.194
			54.6% 17.2% 0.8% - 45.4% 12.3% 0.5%
	2	2	24/20 13/11	+0.055 ( -0.139)
			51.5% 14.1% 0.7% - 48.5% 13.0% 0.4%
	3	2	13/11 13/9	+0.046 ( -0.148)
			50.8% 15.6% 0.7% - 49.2% 13.6% 0.6%
	4	2	24/22 13/9	+0.039 ( -0.155)
			50.9% 14.6% 0.7% - 49.1% 13.3% 0.4%
	5	2	24/22 24/20	-0.009 ( -0.203)
			50.2% 12.5% 0.6% - 49.8% 13.4% 0.4%

Move number 2: Jon Royset to play 42

Pip counts: Moshe Tissona 161, Jon Royset 167
Position ID: mGfwATDgc/ABMA Match ID: cAkqAxAAAAAA

• Jon Royset moves 8/4 6/4

#		Ply	Move	Equity
•	1	2	8/4 6/4	-0.082
			48.1% 14.5% 0.6% - 52.0% 16.4% 0.9%
	2	2	24/22 13/9	-0.244 ( -0.162)
			44.5% 12.1% 0.6% - 55.5% 18.4% 0.8%
	3	2	24/20 13/11	-0.244 ( -0.162)
			44.9% 11.7% 0.6% - 55.1% 18.1% 0.9%
	4	2	13/11 13/9	-0.272 ( -0.190)
			43.6% 12.8% 0.6% - 56.4% 18.4% 1.2%
	5	2	24/22 24/20	-0.286 ( -0.204)
			44.0% 10.4% 0.5% - 56.0% 18.6% 0.7%

Move number 3: Moshe Tissona to play 52

Pip counts: Moshe Tissona 161, Jon Royset 161
Position ID: mGfwATCYZ/ABMA Match ID: MIEqAxAAAAAA

• Moshe Tissona moves 13/11 13/8

#		Ply	Move	Equity
	1	2	24/22 13/8	+0.080
			52.1% 15.8% 0.7% - 47.9% 13.9% 0.5%
•	2	2	13/11 13/8	+0.048 ( -0.032)
			51.0% 16.9% 0.8% - 49.0% 15.0% 0.7%
	3	2	13/8 6/4	-0.003 ( -0.083)
			49.8% 16.2% 0.8% - 50.2% 15.3% 0.7%
	4	2	13/6	-0.047 ( -0.127)
			48.8% 15.8% 0.8% - 51.2% 16.1% 0.8%
	5	0	13/11 8/3	-0.261 ( -0.341)
			44.0% 14.3% 0.9% - 55.9% 19.9% 1.8%

Annotation

Casper van der Tak: Against a stripped 8 point, 13/8 24/22 is standard in the opening.

Move number 4: Jon Royset to play 21

Pip counts: Moshe Tissona 154, Jon Royset 161
Position ID: mOfIATCYZ/ABMA Match ID: cAklAxAAAAAA

• Jon Royset moves 24/23 13/11

#		Ply	Move	Equity
•	1	2	24/23 13/11	-0.132
			47.3% 14.3% 0.7% - 52.7% 18.4% 0.9%
	2	2	13/11 6/5	-0.154 ( -0.022)
			47.4% 14.2% 0.6% - 52.6% 19.0% 1.6%
	3	2	13/10	-0.173 ( -0.041)
			46.0% 13.9% 0.6% - 54.0% 17.9% 1.1%
	4	2	24/23 24/22	-0.213 ( -0.081)
			45.8% 12.8% 0.7% - 54.2% 19.7% 0.8%
	5	2	24/23 6/4	-0.238 ( -0.106)
			44.9% 12.8% 0.5% - 55.1% 19.3% 0.9%

Annotation

Casper van der Tak: I would have slotted 13/11 6/5, but Royset's play is probably better, in particular because Royset has already developed one of the checkers from his stack on the 6-point.

Move number 5: Moshe Tissona to play 31

Pip counts: Moshe Tissona 154, Jon Royset 158
Position ID: mGfkASiY58gBMA Match ID: MIElAxAAAAAA

• Moshe Tissona moves 8/5 6/5

#		Ply	Move	Equity
•	1	2	8/5 6/5	+0.281
			56.6% 20.6% 1.0% - 43.4% 13.3% 0.7%
	2	2	13/10 11/10	-0.014 ( -0.295)
			49.7% 15.9% 0.7% - 50.3% 15.7% 0.8%
	3	0	24/23 11/8	-0.052 ( -0.332)
			48.6% 15.1% 0.6% - 51.4% 15.7% 0.5%
	4	0	24/23 13/10	-0.061 ( -0.341)
			48.5% 16.2% 0.7% - 51.5% 17.0% 0.8%
	5	0	24/20	-0.071 ( -0.352)
			48.6% 15.1% 0.7% - 51.4% 17.1% 0.7%

Move number 6: Jon Royset to play 63

Pip counts: Moshe Tissona 150, Jon Royset 158
Position ID: 2M7IATCYZ+QBKA Match ID: cAkvAxAAAAAA

• Jon Royset moves 11/5 8/5

#		Ply	Move	Equity
•	1	0	11/5 8/5	-0.212
			45.0% 15.3% 1.1% - 55.0% 21.7% 1.3%
	2	0	24/18 11/8	-0.540 ( -0.328)
			38.4% 10.5% 0.7% - 61.7% 27.7% 1.2%
	3	0	13/4	-0.547 ( -0.335)
			37.0% 11.4% 0.7% - 63.0% 25.5% 1.6%
	4	0	13/7 11/8	-0.643 ( -0.431)
			36.1% 10.6% 0.6% - 63.9% 27.5% 1.9%
	5	0	24/15	-0.652 ( -0.440)
			37.1% 10.1% 0.6% - 62.9% 30.2% 1.5%

Move number 7: Moshe Tissona to play 61

Pip counts: Moshe Tissona 150, Jon Royset 149
Position ID: 2J7gASjYzsgBMA Match ID: MAEnAxAAAAAA

• Moshe Tissona moves 24/17*

Alert: lucky roll! ( +0.389)

#		Ply	Move	Equity
•	1	0	24/17*	+0.625
			65.3% 25.5% 1.9% - 34.7% 11.2% 0.4%
	2	0	8/2/1	+0.221 ( -0.403)
			54.6% 27.3% 1.5% - 45.4% 18.1% 2.1%
	3	0	24/23 11/5	+0.085 ( -0.539)
			52.3% 19.7% 1.3% - 47.7% 17.7% 0.7%
	4	0	13/7 8/7	+0.060 ( -0.564)
			52.7% 18.9% 0.9% - 47.3% 18.8% 1.4%
	5	0	11/4	+0.027 ( -0.598)
			50.8% 19.0% 0.9% - 49.2% 17.6% 0.9%

Move number 8: Jon Royset to play 65

Pip counts: Moshe Tissona 143, Jon Royset 166
Position ID: 2M7IISDYHvAAVA Match ID: cAk3AxAAAAAA

• Jon Royset cannot move

Alert: unlucky roll! ( -0.372)

#		Ply	Move	Equity
			Cannot move

Move number 9: Moshe Tissona doubles to 2

Pip counts: Moshe Tissona 143, Jon Royset 166
Position ID: 2B7wAFTYzsghIA Match ID: MBkgAxAAAAAA

• Jon Royset rejects

Alert: wrong pass ( -0.052)! [doubtful]

Cube decision
2-ply cubeless equity		+0.597	(Money: +0.593)
	68.4% 28.8% 2.1% - 31.6% 8.1% 0.3%
Cubeful equities:
1.	Double, take	+0.948
2.	Double, pass	+1.000	(+0.052)
3.	No double	+0.840	(-0.108)
Proper cube action:		Double, take

Annotation

Casper van der Tak: Obviously a very strong double. Tissona is way ahead in the race, has one of Royset's checkers on the bar, and is playing with one checker back against three checkers back. Royset may get some counterplay when he anchors quickly, but he is not a lock to anchor soon and Tissona may be able to build an even stronger prime. Right at the border of the take/pass.

I think I'd take early in a match, to find out more about how somebody plays. e.g. the right balance between blitz and prime? Tissona's side is pretty difficult to play well, which argues for taking.

Kit Woolsey: I'm inclined to pass, although I can see the arguments for taking. Royset has a strong offense, which means that Tissona has to be somewhat cautious with his attack. Tissona still has a back checker, so Royset can win the game frontwards by containing that checker. Tissona is short on ammunition up front, so most of the time Royset will be able to get an anchor. Still Tissona has the advantage in just about all parts of the game, and, most important, Royset is on the bar. Being on the bar tends to be more serious that it appears. It will take time to enter and get things going, and there is always that chance that you won't enter.

Moshe Tissona wins 1 point

Game statistics for game 2
Player	Moshe Tissona	Jon Royset
Checker play statistics
Total moves	4	4
Unforced moves	4	3
Moves marked very good	0	0
Moves marked good	0	0
Moves marked interesting	0	0
Moves unmarked	3	4
Moves marked doubtful	1	0
Moves marked bad	0	0
Moves marked very bad	0	0
Error rate (total)	-0.032 ( -0.104%)	0
Error rate (pr. move)	-0.008 ( -0.026% )	0
Chequer play rating	Advanced	Supernatural
Luck statistics
Rolls marked very lucky	0	0
Rolls marked lucky	1	0
Rolls unmarked	3	3
Rolls marked unlucky	0	1
Rolls marked very unlucky	0	0
Luck rate (total)	+0.662 ( +2.144%)	-0.422 ( -1.367%)
Luck rate (pr. move)	+0.166 ( +0.536%)	-0.106 ( -0.342%)
Luck rating	Go to Las Vegas immediately	"Haaa-haaa"
Cube statistics
Total cube decisions	4	5
Close or actual cube decisions	2	1
Doubles	1	0
Takes	0	0
Passes	0	1
Missed doubles around DP	0	0
Missed doubles around TG	0	0
Wrong doubles around DP	0	0
Wrong doubles around TG	0	0
Wrong takes	0	0
Wrong passes	0	1 (-0.052 ( -0.168%))
Error rate (total)	0	-0.052 ( -0.168%)
Error rate (per cube decision)	0	-0.052 ( -0.168%)
Cube decision rating	Supernatural	Awful!
Overall rating
Error rate (total)	-0.032 ( -0.104%)	-0.052 ( -0.168%)
Error rate (per decision)	-0.005 ( -0.017% )	-0.013 ( -0.042%)
Equivalent Snowie error rate	-4.0	-6.5
Overall rating	Expert	Intermediate
Actual result	53.26%	46.74%
Luck adjusted result	49.75%	50.25%
Relative FIBS rating	-0.87	0.87

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Output generated Sat Aug 02 14:53:20 2003 by GNU Backgammon 0.14-devel 1.1227 030727 (HTML Export version 1.124)