Nov 2023

Ladder for 1 Nov 2023 to 30 Nov 2023

Online statistics for 1 Nov 2023 to 30 Nov 2023

We have calculated a ladder for online play on RealBridge sessions hosted by the Auckland Bridge Club for the period 1 Nov 2023 to 30 Nov 2023. You needed to have played a certain number of times to be listed in the ladder. There are more details at the end about how the calculation is performed, and what is included. This will continue to evolve. Please let us know (realbridge@akbc.co.nz) if you spot any problems or have any suggestions. There are more ladders on the club website.

Open Ladder
Rank		Name	Number	Club	Played	Average¹
1	A♠	Patrick Carter	3775	Auckland	9	60.79%
2	A♥	Douglas Russell	15492	Auckland	13	59.36%
3	A♦	Kevin Hu	46340	Akarana	6	59.14%
4	A♣	John Buckleton	25761	Auckland	12	58.63%
5	K♠	Julie Atkinson	49102	Auckland	5	58.62%
6	K♥	Felicity Hannay	3671	Waiheke	7	58.42%
7	K♦	Zachary Yan	45646	Akarana	5	58.16%
8	K♣	Md Faisal Alam	26807	Howick	9	57.95%
9	Q♠	Cheryl Winsor	10588	Howick	8	57.74%
10	Q♥	Judith Chandler	9758	Auckland	7	57.46%
11	Q♦	Ray Kingston	9878	Auckland	15	56.60%
12	Q♣	Christine Wilson	31091	North Shore	12	56.45%
13	J♠	Dennis Apperley	52671	Havelock North	5	56.28%
14	J♥	Joy Watkinson	5143	Auckland	11	55.88%
15	J♦	Pauline Andrews	1608	Auckland	8	55.56%
16	J♣	Peter Ramsey	43711	Napier	5	55.46%
17		Nicky Bowers	25766	Auckland	15	55.36%
18		Sylvester Riddell	14427	Auckland	7	55.17%
19		Rachael Goffin	20151	Auckland	8	55.02%
20		Pam Nunn	151904	🦘 Australia	8	54.89%
21		Mike Dunn	5733	Auckland	6	54.78%
22		Ray Crowe	4850	Winton	5	54.56%
23		Elizabeth Grieve	7446	Auckland	5	54.53%
24		Mark Robertson	35545	Auckland	8	54.30%
25		Pamela Marsland	26367	Akarana	5	54.08%
26		Lynn Hall	9586	Masterton	12	53.85%
27		Pat Oyston	69542	West Otago	10	53.52%
27		Martin Oyston	34329	West Otago	10	53.52%
29		Thomas Freeman-Greene	51590	Auckland	6	53.26%
30		Rona Driscoll	19976	Taupo	14	53.16%
31		Gillian Corbett	24622	Tauranga	6	53.00%
32		Trudy Lange	10107	Auckland	15	52.81%
33		Neil Williams	952281	🦘 Australia	6	52.76%
34		Chris Fleming	30408	Auckland	12	52.69%
35		Cathy Carroll	31068	Waiheke	8	52.59%
36		William Leach	4318	Mt Albert	5	52.54%
37		Joanna Silk	3019	Auckland	6	52.51%
38		Marie Ewbank	6081	Auckland	5	52.50%
39		Ngaere Webb	17903	Masterton	7	52.47%
40		Heather Robertson	42382	Auckland	13	52.31%
41		Dianne Evans	74554	Winton	8	52.28%
42		Fiona Moon	30514	Auckland	20	52.04%
43		Anne Gelb	7057	Auckland	14	51.90%
44		Carol Joseph	32272	Auckland	11	51.90%
45		Dianne Benvie	23123	Auckland	7	51.73%
46		Beverley Morris	24081	Auckland	7	51.70%
47		Rhonda Graham	41725	North Shore	12	51.65%
48		John Driscoll	33587	Taupo	11	51.54%
49		Jo Clark	4097	Auckland	9	51.45%
50		Sara Worth	3548	Akarana	14	51.28%
51		Ben Wang	54552	Auckland	7	51.18%
52		Julia Thomas	27847	Christchurch	8	51.04%
53		Carla Salinger	42862	Auckland	5	50.93%
54		Brenda Campbell	31209	Waiheke	10	50.63%
55		Robyn Chalmers	15778	Auckland	6	50.21%
56		Gopi Nayar	51596	Auckland	9	50.07%
57		Ian Beattie	32124	Christchurch	5	50.07%

Intermediate/Junior Ladder
Rank		Name	Number	Club	Played	Average¹
1	A♠	Thomas Freeman-Greene	51590	Auckland	6	53.26%
2	A♥	Chris Fleming	30408	Auckland	12	52.69%
3	A♦	Cathy Carroll	31068	Waiheke	8	52.59%
4	A♣	William Leach	4318	Mt Albert	5	52.54%
5	K♠	Joanna Silk	3019	Auckland	6	52.51%
6	K♥	Marie Ewbank	6081	Auckland	5	52.50%
7	K♦	Heather Robertson	42382	Auckland	13	52.31%
8	K♣	Fiona Moon	30514	Auckland	20	52.04%
9	Q♠	Sara Worth	3548	Akarana	14	51.28%
10	Q♥	Ben Wang	54552	Auckland	7	51.18%
11	Q♦	Julia Thomas	27847	Christchurch	8	51.04%
12	Q♣	Carla Salinger	42862	Auckland	5	50.93%
13	J♠	Brenda Campbell	31209	Waiheke	10	50.63%
14	J♥	Robyn Chalmers	15778	Auckland	6	50.21%
15	J♦	Gopi Nayar	51596	Auckland	9	50.07%
16	J♣	Ian Beattie	32124	Christchurch	5	50.07%
17		Takayo Yanagisawa	36064	Auckland	11	49.75%
18		Sybil Cornell	4518	Auckland	10	49.22%
19		Anne Miller	40574	Auckland	7	49.08%
20		Beth Henderson	38982	Hibiscus Coast	11	48.67%
20		Jo McKeown	44104	Auckland	11	48.67%
22		Gary Swift	47824	Auckland	5	48.65%
23		Paula McTaggart	52641	Auckland	19	48.63%
24		Neil Horsfield	51562	Auckland	10	48.53%
25		John Burns	49653	Mt Albert	6	47.83%
26		Anna Powell	1514	Auckland	7	47.80%

Junior Ladder
Rank		Name	Number	Club	Played	Average¹
1	A♠	Thomas Freeman-Greene	51590	Auckland	6	53.26%
2	A♥	Joanna Silk	3019	Auckland	6	52.51%
3	A♦	Sara Worth	3548	Akarana	14	51.28%
4	A♣	Ben Wang	54552	Auckland	7	51.18%
5	K♠	Brenda Campbell	31209	Waiheke	10	50.63%
6	K♥	Gopi Nayar	51596	Auckland	9	50.07%
7	K♦	Beth Henderson	38982	Hibiscus Coast	11	48.67%
7	K♦	Jo McKeown	44104	Auckland	11	48.67%
9	Q♠	Gary Swift	47824	Auckland	5	48.65%
10	Q♥	Paula McTaggart	52641	Auckland	19	48.63%
11	Q♦	Neil Horsfield	51562	Auckland	10	48.53%
12	Q♣	John Burns	49653	Mt Albert	6	47.83%
13	J♠	Bryan Travers	46325	Howick	7	47.50%
14	J♥	Helen Smith	51563	Auckland	8	47.46%
15	J♦	Elizabeth Gollan	51587	Auckland	6	47.07%
16	J♣	Monique Shephard	51565	East Coast Bays	5	46.98%
17		Katherine Griffith	51326	East Coast Bays	6	46.83%
18		Peter Mclean	2281	Howick	5	46.49%

Statistics for all boards:

Percentage when declarer: (10123)

50.76%

... percentage that made: (6639 of 10123)

65.58%

... when Opener holds at least 16 hcp: (2572)

50.53%

... when opened but most didn't: (323)

52.34%

... when Opener preempted: (1080)

50.39%

... was preempted when most didn't: (379)

52.66%

... when Declarer is distributional³: (1328 hands)

51.25%

... when in a unique contract: (2561)

45.00%

Percentage score when on opening lead: (10165)

49.26%

... when leading from a sequence⁴: (1346)

47.69%

... when leading trumps⁴: (311)

47.89%

... when trumps was the only right lead⁴: (8/147)

... when leading a singleton⁴: (574)

53.86%

... when leading a doubleton⁴: (507)

51.86%

... when leading passively⁴: (2346)

49.54%

... when leading actively⁴: (5039)

48.81%

Highest HCP:	♠ AJ76 ♥ AKQ982 ♦ K ♣ AK Board 4, AKBC - Monday November Teams (24 hcp) ♠ AK ♥ AKQ5 ♦ KJ96 ♣ A84 Board 14, PEC / AKBC - Open - Thu 23 Nov - 1pm
Freakiest Hand:	♠ - ♥ Q109876432 ♦ J98 ♣ 3 Board 8, AKBC - Open - Wed 8 Nov - 7pm (6:N1)

Beer cards won: (22)

Who was dealt the MOST high card points on average?
Rank		Name	Hands	Average HCP
1	A♠	Julie Atkinson	120	11.08
2	A♥	Babs-Merel de Visser	145	10.77
3	A♦	Jacinda Manconi	118	10.77
4	A♣	Robin Stevenson	118	10.69
5	K♠	Heather Robertson	343	10.66
6	K♥	Peter Collinge	120	10.65
7	K♦	Neil Horsfield	212	10.63
8	K♣	Marie Ewbank	123	10.61
9	Q♠	Thomas Freeman-Greene	131	10.58
10	Q♥	Gary Swift	194	10.58
11	Q♦	William Leach	118	10.55
12	Q♣	Nola Clark	102	10.54
13	J♠	Peter Mclean	132	10.54
14	J♥	Jill Church	156	10.50
15	J♦	Bruce Cousins	105	10.47
16	J♣	Anne Miller	199	10.46

Who was dealt the LEAST high card points on average?
Rank		Name	Hands	Average HCP
1	A♠	Paul Cook	130	8.98
2	A♥	Graeme Duhs	118	9.04
3	A♦	Lisa Tregenza	115	9.21
4	A♣	Lee Moselen	118	9.25
5	K♠	Glennis Christie	111	9.33
6	K♥	Ginny Stuart	102	9.36
7	K♦	Helen Walker	120	9.38
8	K♣	Len Eagle	102	9.42
9	Q♠	Judith Chandler	250	9.50
10	Q♥	Jimmy Ching	174	9.53
11	Q♦	Allan Morris	103	9.53
12	Q♣	Dong Gao Bi	162	9.55
13	J♠	Christine Wilson	333	9.56
14	J♥	Sharon Marryatt	201	9.57
15	J♦	Kevin Hu	138	9.58
16	J♣	Pamela Dravitzki	108	9.60

Who declares most frequently?
Rank		Name	Total Hands	Percent as Declarer
1	A♠	William Leach	118	38.98%
2	A♥	Sue Brown	100	36.00%
3	A♦	Graham Wakefield	131	33.59%
4	A♣	Russell Watt	102	33.33%
5	K♠	Ben Wang	166	32.53%
6	K♥	Pamela Dravitzki	108	32.41%
7	K♦	Leah Andrews	130	32.31%
8	K♣	Duncan White	171	31.58%
9	Q♠	Bryan Travers	178	31.46%
10	Q♥	Neil Horsfield	211	31.28%
11	Q♦	Brenda Campbell	253	31.23%
12	Q♣	Sharon Marryatt	200	31.00%
13	J♠	Thomas Freeman-Greene	131	30.53%
14	J♥	Pam Nunn	207	30.43%
15	J♦	Gary Swift	194	30.41%
16	J♣	Babs-Merel de Visser	145	30.34%

Frequency Declarer Is Making
This table is not just about play - it also relects bidding. There are two good ways to get on this table: (1) by being a great declarer, (2) by being a sound bidder; there are two bad ways to get on this table: (1) by being a chronic underbidder, and (2) by never sacrificing. Regardless of which category you fall into, it is better to be higher than lower in the ranking.
Rank		Name	Making	Total	Percent
1	A♠	Graham Potter	28	32	87.50%
1	A♠	Ray Crowe	28	32	87.50%
3	A♦	Jimmy Ching	36	42	85.71%
4	A♣	Rachael Goffin	44	52	84.62%
5	K♠	Pamela Dravitzki	29	35	82.86%
6	K♥	Sophie Kranz	23	28	82.14%
7	K♦	Robin Stevenson	26	32	81.25%
8	K♣	Jackie Taylor	21	26	80.77%
9	Q♠	Patrick Carter	51	64	79.69%
10	Q♥	Ian Beattie	22	28	78.57%
11	Q♦	Rhonda Graham	35	45	77.78%
11	Q♦	Barbara Fitzgerald	28	36	77.78%
13	J♠	Marie Ewbank	27	35	77.14%
14	J♥	Janet Barnard	20	26	76.92%
15	J♦	William Leach	35	46	76.09%
16	J♣	Cynthia Clayton	25	33	75.76%
17		Sylvester Riddell	28	37	75.68%
18		Paula Boughey	24	32	75.00%
19		Rona Driscoll	64	86	74.42%
20		Peter Collinge	23	31	74.19%
21		Leonie Pritchard	20	27	74.07%
22		Katherine Griffith	48	65	73.85%
23		Douglas Russell	66	90	73.33%
24		Martin Oyston	49	67	73.13%
25		Bob Grover	19	26	73.08%
25		Judith Chandler	38	52	73.08%
27		Dianne Benvie	35	48	72.92%
28		Michael Johnstone	24	33	72.73%
29		Peter Mclean	21	29	72.41%
30		Ray Kingston	67	93	72.04%
31		Brett Glass	18	25	72.00%
32		Md Faisal Alam	38	53	71.70%
33		Bryan Travers	40	56	71.43%
34		Paul Buck	27	38	71.05%
34		Robyn Chalmers	27	38	71.05%
36		Julie Atkinson	22	31	70.97%
37		Anthony Wilson	56	79	70.89%
38		Joanna Silk	29	41	70.73%
39		Neil Williams	24	34	70.59%
39		Dianne Evans	48	68	70.59%
39		Graham Dale	24	34	70.59%
42		Graham Wakefield	31	44	70.45%
43		Lorraine Inglis	19	27	70.37%
44		Zachary Yan	26	37	70.27%
45		Joy Watkinson	51	73	69.86%
46		Tim Pan	20	29	68.97%
46		Lee Moselen	20	29	68.97%
48		John Buckleton	75	109	68.81%
49		Trudy Lange	77	112	68.75%
50		Dong Gao Bi	26	38	68.42%

Position		Name	Hands	Average
Double Dummy Declarer Success
This table shows how many tricks a declarer takes compared to double dummy play, given the actual lead. A figure of +1.0 for example would mean that on average the declarer takes one more trick than the double dummy result.
1	A♠	Bob Grover	26	+0.38
2	A♥	Graham Wakefield	44	+0.34
3	A♦	Graham Dale	34	+0.32
4	A♣	Tim Pan	29	+0.24
5	K♠	Rachael Goffin	52	+0.23
6	K♥	Brett Glass	25	+0.20
7	K♦	Patrick Carter	64	+0.17
8	K♣	Ben Wang	54	+0.17
9	Q♠	Pam Nunn	63	+0.14
9	Q♠	Pamela Dravitzki	35	+0.14
11	Q♦	John Buckleton	109	+0.13
12	Q♣	Michael Johnstone	33	+0.12
13	J♠	Marie Milsum	26	+0.12
14	J♥	William Leach	46	+0.11
15	J♦	Zachary Yan	37	+0.11
16	J♣	Peter Collinge	31	+0.10
17		Cheryl Winsor	56	+0.09
18		Lorraine Inglis	27	+0.07
19		Elaine Ford	31	+0.06
20		Paula Boughey	32	+0.06
21		Mike Dunn	49	+0.06
22		Cynthia Clayton	33	+0.06
23		Marie Ewbank	35	+0.06
24		Jillian Ramsey	26	+0.04
25		Felicity Hannay	58	+0.03
25		Carla Salinger	29	+0.03
27		Ray Crowe	32	+0.03
28		Sylvester Riddell	37	+0.03
29		Gillian Corbett	43	+0.02
30		Douglas Russell	90	+0.02
31		Md Faisal Alam	53	+0.02
32		Peter Ramsey	54	+0.00
32		Helene Labreche	33	+0.00

Position		Name	Hands	Average
Double Dummy Defender Success
This table shows how many tricks you and your partner take in defence compared to double dummy play, given the actual lead. A figure of +1.0 for example would mean that on average the defender takes one more trick than the double dummy result.
1	A♠	Rex Green	29	+0.66
2	A♥	Gillian Corbett	64	+0.58
3	A♦	Allan Morris	44	+0.57
4	A♣	Carolyn Guthrie	32	+0.56
5	K♠	George Kaul	40	+0.55
6	K♥	Ginny Stuart	51	+0.55
7	K♦	John Khouri	59	+0.53
8	K♣	Dale Lacey	29	+0.52
8	K♣	Robyn Freeman-Greene	29	+0.52
10	Q♥	Jackie Humphrey	49	+0.51
11	Q♦	Clare Cryer	32	+0.50
11	Q♦	Chris Curreen	28	+0.50
13	J♠	Ella Gray	41	+0.49
14	J♥	Sue Wedde	52	+0.48
15	J♦	Thelma Burd	25	+0.48
16	J♣	Jane Stearns	51	+0.47
17		Beverley Morris	89	+0.45
18		John Mansfield	29	+0.45
19		Paula Gregory	38	+0.45
19		Michael Johnstone	38	+0.45
21		Pamela Marsland	63	+0.44
22		Tim Pan	43	+0.44
22		Lysandra Zheng	43	+0.44
24		Lynn Bartram	54	+0.43
25		John Buckleton	186	+0.42
26		Bob Grover	45	+0.42
27		Sharon Kopschaninow	36	+0.42
28		Premkumar Soundranayagam	65	+0.42
29		Sita Monaghan	46	+0.41
30		Joanna Silk	83	+0.41
31		Ronald Evans	27	+0.41
32		Sophie Kranz	53	+0.40
33		William Leach	48	+0.40
34		Susan Steedman	36	+0.39
35		Philippa Cunningham	34	+0.38
35		Paul Trotman	34	+0.38
37		Liz Ware	42	+0.38
38		Lachie Shea	37	+0.38
39		David Kranz	45	+0.38
40		Cheryl Winsor	96	+0.38
40		Carol Minchin	48	+0.38
40		Graham Wakefield	56	+0.38
43		Md Faisal Alam	103	+0.37
44		Ray Crowe	68	+0.37
45		Bernard Lamusse	30	+0.37
46		Robyn Hopkins	25	+0.36
46		Mila Doerr	25	+0.36
48		Ian Beattie	67	+0.36
49		Jackie Taylor	42	+0.36
50		Madeline Gunn	62	+0.35

Contract	Frequency	% Made	Average Score
Contract Success
This table shows declarer's success in various contracts.
7N	12	83.33%	70.90%
1♠X	4	25.00%	69.42%
1♠	84	85.71%	60.65%
6♠	71	69.01%	58.15%
6♣	15	73.33%	55.96%
4♣	114	57.89%	55.80%
6♥	106	66.04%	55.07%
Pass	42	100.00%	54.97%
3N	1568	73.09%	53.85%
2♠	682	69.35%	53.71%
6N	86	61.63%	53.12%
2♥	558	69.71%	53.09%
1N	736	76.49%	52.97%
6♦	28	57.14%	52.93%
1♦	24	91.67%	52.79%
4♠	1199	65.64%	52.44%
4♥	1104	67.75%	51.54%
2♣	127	76.38%	50.90%
2♦	242	76.45%	50.70%
1NX	17	47.06%	50.56%
1♥	50	78.00%	50.35%
6♣X	4	50.00%	50.00%
7♥	2	50.00%	50.00%
3♠	563	55.95%	49.30%
3♥	509	60.71%	48.97%

Passed Out	42	100.00%	54.97%
Part Score	5102	66.31%	50.45%
Game+	5021	64.85%	51.08%
Slam	319	63.01%	53.79%
Grand Slam	16	75.00%	65.16%
Doubled	467	22.70%	37.41%
Redoubled	2	0.00%	10.00%

Position		Name	Good leads	Total	Percent
Double Dummy Opening Lead Success Rate
This table shows how often you make an opening lead that does not cost a trick for the defence, double dummy. Hands where every card leads to the same result are not counted.
1	A♠	Mike Dunn	26	29	89.66%
2	A♥	Ray Crowe	22	25	88.00%
3	A♦	Katherine Griffith	38	44	86.36%
4	A♣	Neil Williams	25	30	83.33%
4	A♣	Felicity Hannay	35	42	83.33%
4	A♣	Joanna Silk	30	36	83.33%
7	K♦	Zachary Yan	24	29	82.76%
8	K♣	Robin Stevenson	22	27	81.48%
9	Q♠	Mark Robertson	34	42	80.95%
10	Q♥	Kevin Hu	29	36	80.56%
11	Q♦	Md Faisal Alam	33	41	80.49%
12	Q♣	Jo Clark	36	45	80.00%
12	Q♣	Douglas Russell	60	75	80.00%
12	Q♣	Duncan White	20	25	80.00%
15	J♦	Pat Oyston	39	49	79.59%
16	J♣	Sylvester Riddell	30	38	78.95%
17		Anthony Wilson	55	70	78.57%
18		Cheryl Winsor	25	32	78.13%
19		Cynthia Clayton	28	36	77.78%
20		Kevin Birch	24	31	77.42%
20		Ben Wang	24	31	77.42%
22		Helene Labreche	27	35	77.14%
23		Pauline Andrews	23	30	76.67%
24		Susan Macken	32	42	76.19%
25		Arch Jelley	19	25	76.00%
26		Peter Ramsey	22	29	75.86%
27		John Buckleton	50	66	75.76%
27		Valerie Gardiner	25	33	75.76%
27		Ngaere Webb	25	33	75.76%
30		Brenda Campbell	34	45	75.56%
30		Cathy Carroll	34	45	75.56%
32		Paula McTaggart	74	98	75.51%
33		Lynn Hall	43	57	75.44%
34		Nicky Bowers	52	69	75.36%
34		Carol Joseph	52	69	75.36%
36		Elaine Ford	32	43	74.42%
37		Anne Miller	23	31	74.19%
38		Sharon Marryatt	34	46	73.91%
39		Bryan Travers	31	42	73.81%
40		Heather Robertson	45	61	73.77%
41		Rachael Goffin	30	41	73.17%
42		Joy Watkinson	40	55	72.73%
42		Patrick Carter	32	44	72.73%
42		Beverley Morris	24	33	72.73%
45		Jo McKeown	29	40	72.50%
46		Jody Burchall	21	29	72.41%
47		Christine Wilson	39	54	72.22%
48		Chris Fleming	36	50	72.00%
48		Paul Cook	18	25	72.00%
50		Judith Chandler	33	46	71.74%

¹ For the ladder: you need to have played at least 5 times in Open sessions during the period to be listed. For every 2 extra sessions you play above that you get to drop your lowest score, e.g. if you play 9 times your worst 2 scores are discarded and the best 7 are averaged, or if you play 15 times your worst 5 scores are discarded and the best 10 are averaged. Only those sessions where you played with a partner with the same grade or higher are included because we want to encourage players to play with lower graded friends without affecting their average. Only sessions where you played at least 10 boards are included. Some sessions are harder than others but we aren't adjusting for that. Supervised/Beginner/Learner sessions aren't included. For monthly emails we show just the top 50. On the website we show a more complete ladder - those with an average equal to or higher than: 50% (Open), 47.5% (Intermediate), and 45% (Junior). Matches scored in X-IMPS/IMPS for the whole sesssion are converted to a percentage using the formula used by the EBU National Grading System.

² For multi-session results the position shown is the overall position for all the sessions played up to that point.

³ Distributional means having a 7+ card suit or a void.

⁴ Leads are imperfectly classified into leads of trumps, a sequence (eg QJ10 or QJ9 not Q109), a singleton or low doubleton vs. a suit contract, passive (a suit headed by the 10 or lower), or active (anything else). No account is taken (currently) of the bidding: whether you have led the unbid suit, partner's suit, or obeyed a lead directing double, etc.

⁵ [link] links to the actual hand in RealBridge, [BSOL] links to the hand in BridgeSolverOnline - click the highlighted contract in the makeable contracts table and the lead success will be calculated, your lead shows with an asterisk.

To send feedback email realbridge@akbc.co.nz; to contact the principal director email director@akbc.co.nz

Auckland Bridge Club