Game number 6

Moshe Tissona (5 pts) vs. Jon Royset (1 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

Royset elects to slot with a 21 and Tissona responds with a 65. Royset builds his 5 and 4 points, while Tissona only manages to make the bar-point. Royset hits a fly-shot in the outfield, and Tissona anchors on the deuce-point. Royset correctly doubles, and Tissona drops an easy take. Score: 5-2 Tissona.

Move number 1: Jon Royset to play 21

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

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

Pip counts: Moshe Tissona 167, Jon Royset 167
Position ID: 4HPwATDgc/ABMA Match ID: cAglA1AACAAA

• Jon Royset moves 13/11 6/5

#		Ply	Move	Equity
•	1	2	13/11 6/5	+0.063
			50.9% 14.6% 0.6% - 49.1% 14.3% 0.8%
	2	2	24/23 13/11	+0.061 ( -0.001)
			50.6% 13.9% 0.6% - 49.4% 13.2% 0.4%
	3	2	13/10	+0.029 ( -0.033)
			49.7% 14.2% 0.6% - 50.3% 13.9% 0.6%
	4	2	24/21	+0.029 ( -0.034)
			50.1% 12.7% 0.5% - 49.9% 13.2% 0.4%
	5	2	24/23 24/22	+0.001 ( -0.062)
			49.3% 12.4% 0.5% - 50.7% 13.4% 0.4%

Move number 2: Moshe Tissona to play 65

Pip counts: Moshe Tissona 167, Jon Royset 164
Position ID: 0HPkATDgc/ABMA Match ID: MAE3A1AACAAA

• Moshe Tissona moves 24/13

#		Ply	Move	Equity
•	1	2	24/13	-0.178
			47.5% 10.8% 0.5% - 52.5% 16.4% 0.5%
	2	2	24/18 13/8	-0.275 ( -0.097)
			45.1% 11.4% 0.6% - 54.9% 18.1% 0.7%
	3	2	13/8 13/7	-0.324 ( -0.146)
			43.2% 12.5% 0.6% - 56.8% 18.0% 1.0%
	4	2	13/2	-0.462 ( -0.284)
			40.4% 11.5% 0.6% - 59.6% 20.4% 1.1%
	5	2	24/18 8/3	-0.488 ( -0.310)
			40.6% 10.2% 0.5% - 59.4% 21.8% 1.2%

Move number 3: Jon Royset to play 62

Pip counts: Moshe Tissona 156, Jon Royset 164
Position ID: 4HPwAyDQc+QBMA Match ID: cAkrA1AACAAA

• Jon Royset moves 24/22 11/5

#		Ply	Move	Equity
	1	2	13/5	+0.197
			53.0% 16.8% 0.4% - 47.0% 10.6% 0.4%
•	2	2	24/22 11/5	+0.187 ( -0.010)
			53.0% 15.3% 0.4% - 47.0% 9.6% 0.2%
	3	2	11/5 6/4	+0.127 ( -0.069)
			51.4% 15.6% 0.4% - 48.6% 10.9% 0.5%
	4	2	11/5 8/6	+0.118 ( -0.079)
			51.0% 15.7% 0.4% - 49.0% 10.9% 0.4%
	5	2	24/16	-0.055 ( -0.252)
			48.2% 11.8% 0.3% - 51.8% 13.8% 0.6%

Annotation

Casper van der Tak: What is the best two after covering the slot? Expert advice used to be to split the back checkers after opponent has escaped a back checker. However, lately we have learned that the proper idea is to build points and bring checkers to attack the back checker. Accordingly, 13/11 is indicated.

(I know this but it still goes against my instincts not to split).

Move number 4: Moshe Tissona to play 61

Pip counts: Moshe Tissona 156, Jon Royset 156
Position ID: sOfgASTgc/ADIA Match ID: MAEnA1AACAAA

• Moshe Tissona moves 13/7 8/7

#		Ply	Move	Equity
•	1	2	13/7 8/7	-0.139
			48.5% 9.7% 0.2% - 51.5% 14.7% 0.3%
	2	2	13/6	-0.328 ( -0.189)
			43.6% 8.6% 0.2% - 56.4% 17.0% 0.4%
	3	0	8/1*	-0.507 ( -0.368)
			38.7% 7.8% 0.2% - 61.3% 19.4% 0.6%
	4	0	24/23 13/7	-0.557 ( -0.418)
			38.1% 7.9% 0.2% - 61.9% 20.9% 0.7%
	5	0	24/23 8/2	-0.624 ( -0.485)
			37.3% 7.8% 0.2% - 62.7% 22.3% 0.7%

Move number 5: Jon Royset to play 11

Pip counts: Moshe Tissona 149, Jon Royset 156
Position ID: 4NvgAyCw5+ABJA Match ID: cIkkA1AACAAA

• Jon Royset moves 6/4(2)

#		Ply	Move	Equity
•	1	2	6/4(2)	+0.200
			53.6% 15.4% 0.4% - 46.4% 9.9% 0.3%
	2	2	24/21 22/21	+0.148 ( -0.052)
			51.9% 12.0% 0.2% - 48.1% 6.3% 0.1%
	3	2	24/22 8/7(2)	+0.119 ( -0.081)
			50.8% 13.8% 0.2% - 49.2% 8.1% 0.2%
	4	2	8/7(3) 6/5	+0.080 ( -0.120)
			50.4% 14.0% 0.3% - 49.6% 10.5% 0.2%
	5	2	22/21 8/7(3)	+0.059 ( -0.141)
			50.0% 13.8% 0.3% - 50.0% 11.2% 0.3%

Move number 6: Moshe Tissona to play 21

Pip counts: Moshe Tissona 149, Jon Royset 152
Position ID: 2ObgASTg2+ADIA Match ID: MAElA1AACAAA

• Moshe Tissona moves 24/23 13/11

#		Ply	Move	Equity
•	1	2	24/23 13/11	-0.414
			41.8% 9.0% 0.3% - 58.2% 19.1% 0.4%
	2	2	13/10	-0.429 ( -0.015)
			41.2% 8.9% 0.2% - 58.8% 18.2% 0.5%
	3	2	8/7 8/6	-0.550 ( -0.136)
			38.4% 7.6% 0.2% - 61.6% 19.2% 0.4%
	4	2	6/3*	-0.552 ( -0.138)
			38.9% 8.8% 0.3% - 61.1% 20.5% 0.8%
	5	2	7/5 6/5	-0.555 ( -0.142)
			38.6% 9.0% 0.2% - 61.4% 19.9% 0.9%

Annotation

Casper van der Tak: Tissona has two alternatives: 24/23 13/11 and 13/10. Playing 24/23 is no bargain, since it is not easier to escape from the 23 than from the 24, and it is easier for Royset to attack on the 23. But 13/10 leaves 8 shots, while 13/11 leaves 4. With Royset's strong board, safety is the overriding consideration.

Move number 7: Jon Royset to play 62

Pip counts: Moshe Tissona 146, Jon Royset 152
Position ID: 4NvIAxDY5uABJA Match ID: cAkrA1AACAAA

• Jon Royset moves 22/14*

Cube decision
2-ply cubeless equity		+0.264	(Money: +0.266)
	58.2% 19.1% 0.4% - 41.8% 9.0% 0.3%
Cubeful equities:
1.	No double	+0.414
2.	Double, pass	+1.000	(+0.586)
3.	Double, take	+0.320	(-0.094)
Proper cube action:		No double, take (13.8%)

Alert: lucky roll! ( +0.360)

#		Ply	Move	Equity
•	1	0	22/14*	+0.796
			68.7% 22.6% 0.7% - 31.3% 6.8% 0.2%
	2	0	22/20 8/2*	+0.366 ( -0.430)
			56.0% 21.4% 0.7% - 44.0% 10.3% 0.4%
	3	0	13/11 8/2*	+0.351 ( -0.445)
			55.5% 21.8% 0.7% - 44.5% 11.0% 0.5%
	4	0	24/22 13/7	+0.307 ( -0.489)
			55.1% 17.1% 0.2% - 44.9% 7.5% 0.2%
	5	0	24/22 8/2*	+0.303 ( -0.492)
			54.2% 19.6% 0.4% - 45.8% 8.8% 0.2%

Move number 8: Moshe Tissona to play 62

Pip counts: Moshe Tissona 160, Jon Royset 144
Position ID: 2ObgBSDg2+ABSA Match ID: MAErA1AACAAA

• Moshe Tissona moves bar/23 13/7

#		Ply	Move	Equity
•	1	2	bar/23 13/7	-0.763
			30.8% 6.8% 0.1% - 69.2% 14.1% 0.4%
	2	2	bar/23 7/1*	-1.000 ( -0.237)
			25.7% 5.3% 0.1% - 74.3% 20.3% 1.0%
	3	2	bar/23 8/2	-1.000 ( -0.237)
			25.8% 5.4% 0.1% - 74.2% 21.3% 1.0%

Move number 9: Jon Royset doubles to 2

Pip counts: Moshe Tissona 152, Jon Royset 144
Position ID: 4LvBARjY5uAFIA Match ID: cBEgA1AACAAA

• Moshe Tissona rejects

Alert: wrong pass ( -0.124)! [bad]

Cube decision
2-ply cubeless equity		+0.505	(Money: +0.497)
	70.7% 14.4% 0.6% - 29.3% 6.5% 0.2%
Cubeful equities:
1.	Double, take	+0.876
2.	Double, pass	+1.000	(+0.124)
3.	No double	+0.832	(-0.043)
Proper cube action:		Double, take

Annotation

Casper van der Tak: An obvious double for Royset, yet an equally obvious take for Tissona. Sure, Royset has the better prime and better board, but Tissona has all checkers in play, has a mini prime of his own, and has only two checkers back. Tissona also has a reasonable standing in the race, should it come to that, and the 23-anchor cuts down on gammons. Tissona has many ways to win this as prime vs. prime, or as a deep anchor game. Clear take.

Jon Royset wins 1 point

Game statistics for game 6
Player	Moshe Tissona	Jon Royset
Checker play statistics
Total moves	4	4
Unforced moves	4	4
Moves marked very good	0	0
Moves marked good	0	0
Moves marked interesting	0	0
Moves unmarked	4	4
Moves marked doubtful	0	0
Moves marked bad	0	0
Moves marked very bad	0	0
Error rate (total)	0	-0.010 ( -0.032%)
Error rate (pr. move)	0	-0.002 ( -0.008%)
Chequer play rating	Supernatural	World class
Luck statistics
Rolls marked very lucky	0	0
Rolls marked lucky	0	1
Rolls unmarked	4	3
Rolls marked unlucky	0	0
Rolls marked very unlucky	0	0
Luck rate (total)	-0.410 ( -1.327%)	+0.421 ( +1.362%)
Luck rate (pr. move)	-0.102 ( -0.332%)	+0.105 ( +0.341%)
Luck rating	"Haaa-haaa"	Go to Las Vegas immediately
Cube statistics
Total cube decisions	5	4
Close or actual cube decisions	1	4
Doubles	0	1
Takes	0	0
Passes	1	0
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	1 (-0.124 ( -0.402%))	0
Error rate (total)	-0.124 ( -0.402%)	0
Error rate (per cube decision)	-0.124 ( -0.402% )	0
Cube decision rating	Awful!	Supernatural
Overall rating
Error rate (total)	-0.124 ( -0.402%)	-0.010 ( -0.032%)
Error rate (per decision)	-0.025 ( -0.080% )	-0.001 ( -0.004%)
Equivalent Snowie error rate	-15.5	-1.2
Overall rating	Casual player	Supernatural
Actual result	46.86%	53.14%
Luck adjusted result	49.55%	50.45%
Relative FIBS rating	-1.55	1.55

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Output generated Sat Aug 02 14:54:04 2003 by GNU Backgammon 0.14-devel 1.1227 030727 (HTML Export version 1.124)