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Feb 2023
Ladder for 1 Feb 2023 to 28 Feb 2023

Online statistics for 1 Feb 2023 to 28 Feb 2023
We have calculated various ladders for online play on RealBridge sessions hosted by the Auckland Bridge Club for the two-month period 1 Feb 2023 to 28 Feb 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 is still an experimental feature. It will continue to evolve. Please let us know (realbridge@akbc.co.nz) if you spot any problems or have any suggestions.

 
Open Ladder
Rank Name Number Club Played Average1
1 A♠ John Buckleton 25761 Auckland 17 60.30%
2 A♥ Ian Clayton 4161 Hamilton 12 59.86%
3 A♦ Dennis Apperley 52671 Havelock North 5 58.91%
4 A♣ Patrick Carter 3775 Auckland 5 58.70%
5 K♠ Ash Hamilton 84000 Westport 5 58.49%
6 K♥ Cynthia Clayton 13263 Hamilton 7 58.15%
7 K♦ Douglas Russell 15492 Auckland 7 57.56%
8 K♣ Dale Lacey 16928 Wellington 7 56.97%
8 K♣ Robyn Freeman-Greene 6603 Victoria 7 56.97%
10 Q♥ Anne Gelb 7057 Auckland 11 56.96%
11 Q♦ Richard Stuart 38456 Auckland 6 56.44%
12 Q♣ Ratilal Ranchhod 3203 Franklin 5 56.38%
13 J♠ Trudy Lange 10107 Auckland 7 56.27%
14 J♥ Russell Watt 17820 Auckland 8 55.76%
15 J♦ Nicky Bowers 25766 Auckland 12 55.03%
16 J♣ Carol Minchin 12176 Nelson 5 54.92%
17 Gay Bradbury 2863 Auckland 16 54.91%
18 Carol Joseph 32272 Auckland 7 54.68%
19 John Driscoll 33587 Taupo 11 54.50%
19 Rona Driscoll 19976 Taupo 11 54.50%
21 Sylvester Riddell 14427 Auckland 7 54.42%
22 Leslie Watt 56607 Auckland 8 54.21%
23 Takayo Yanagisawa 36064 Auckland 8 54.19%
24 Chris Fleming 30408 Auckland 13 54.09%
25 Cathy Carroll 31068 Waiheke 13 53.98%
26 Mark Robertson 35545 Auckland 7 53.94%
27 Paul Buck 697990 Australia 7 53.88%
27 Pam Nunn 151904 Australia 7 53.88%
29 Rachael Goffin 20151 Auckland 6 53.87%
30 Dianne Benvie 23123 Auckland 11 53.60%
31 Cheryl Winsor 10588 Howick 6 53.46%
32 Derek Bartosh 3467 Auckland 6 53.09%
33 Peter Ramsey 43711 Napier 7 52.94%
34 Joy Watkinson 5143 Auckland 5 52.78%
35 Leah Andrews 21534 Auckland 8 52.78%
36 Ian Beattie 32124 Christchurch 8 52.65%
37 Jillian Ramsey 10632 Havelock North 5 52.40%
38 Bev Penny 33324 Hastings 6 52.37%
39 Heather Robertson 42382 Auckland 7 52.04%
40 Christine Wilson 31091 North Shore 6 51.99%
41 Rex Green 25371 Christchurch 6 51.89%
42 Pamela Dravitzki 42568 Richmond 6 51.76%
43 Thelma Burd 32380 Hamilton 8 51.66%
43 Duncan White 18466 Hamilton 8 51.66%
45 Trish Murphy 52605 Hastings 5 51.27%
46 Anthony Wilson 31057 Auckland 6 51.10%
47 Susan Wedde 20104 Auckland 6 50.73%
48 Elaine Rayner 34178 Hamilton 5 50.71%
49 Kevin Birch 33810 Franklin 5 50.71%
49 Premkumar Soundranayagam 43882 Howick 5 50.71%
51 Jill Patterson 31186 Waiheke 11 50.68%
52 Fiona Moon 30514 Auckland 13 50.66%
53 Dave Almond 45127 Mt Albert 8 50.55%
54 Ngaere Webb 17903 Masterton 6 50.44%
55 Dianne Evans 74554 Winton 5 50.43%
56 Susan Steedman 41147 Mt Albert 5 50.40%
57 Rosa Mishkin 9309 Kairangi 5 50.14%
58 Jane Stearns 22036 Kerikeri 6 50.06%
 
Intermediate/Junior Ladder
Rank Name Number Club Played Average1
1 A♠ Ash Hamilton 84000 Westport 5 58.49%
2 A♥ Ratilal Ranchhod 3203 Franklin 5 56.38%
3 A♦ Takayo Yanagisawa 36064 Auckland 8 54.19%
4 A♣ Chris Fleming 30408 Auckland 13 54.09%
5 K♠ Cathy Carroll 31068 Waiheke 13 53.98%
6 K♥ Derek Bartosh 3467 Auckland 6 53.09%
7 K♦ Leah Andrews 21534 Auckland 8 52.78%
8 K♣ Ian Beattie 32124 Christchurch 8 52.65%
9 Q♠ Jillian Ramsey 10632 Havelock North 5 52.40%
10 Q♥ Bev Penny 33324 Hastings 6 52.37%
11 Q♦ Heather Robertson 42382 Auckland 7 52.04%
12 Q♣ Rex Green 25371 Christchurch 6 51.89%
13 J♠ Thelma Burd 32380 Hamilton 8 51.66%
13 J♠ Duncan White 18466 Hamilton 8 51.66%
15 J♦ Trish Murphy 52605 Hastings 5 51.27%
16 J♣ Susan Wedde 20104 Auckland 6 50.73%
17 Elaine Rayner 34178 Hamilton 5 50.71%
18 Jill Patterson 31186 Waiheke 11 50.68%
19 Fiona Moon 30514 Auckland 13 50.66%
20 Dave Almond 45127 Mt Albert 8 50.55%
21 Susan Steedman 41147 Mt Albert 5 50.40%
22 Sara Worth 3548 None 16 49.55%
23 Robyn Chalmers 15778 Auckland 11 49.46%
24 Robin Hardley 3748 Auckland 9 49.36%
25 Trish Young 37598 Auckland 11 49.08%
26 Kerri McCrae 3653 Auckland 7 49.07%
27 Rae Cameron 22165 East Coast Bays 7 49.06%
28 Thomas Freeman-Greene 51590 Auckland 9 48.78%
29 Tricia Bayley 8064 Otaki 9 48.55%
29 Gay Calderwood 29180 Otaki 9 48.55%
31 Sybil Cornell 4518 Auckland 11 48.23%
32 John Metherell 34564 Auckland 10 48.12%
33 Elizabeth Gollan 51587 Auckland 9 47.90%
34 Anna Powell 1514 Auckland 5 47.78%
35 Lynda Bateman 60047 Levin 6 47.70%
 
Junior Ladder
Rank Name Number Club Played Average1
1 A♠ Ratilal Ranchhod 3203 Franklin 5 56.38%
2 A♥ Sara Worth 3548 None 16 49.55%
3 A♦ Thomas Freeman-Greene 51590 Auckland 9 48.78%
4 A♣ John Metherell 34564 Auckland 10 48.12%
5 K♠ Elizabeth Gollan 51587 Auckland 9 47.90%
6 K♥ Paula McTaggart 52641 Auckland 11 46.70%
7 K♦ Bryan Travers 46325 Howick 5 45.41%
8 K♣ Peter Mclean 2281 Howick 6 45.33%
 
 
Statistics for all boards:
Percentage when declarer: (9505) 51.01%
  ... percentage that made: (6208 of 9505) 65.31%
  ... when Opener holds at least 16 hcp: (2311) 50.15%
  ... when opened but most didn't: (286) 55.58%
  ... when Opener preempted: (1116) 52.44%
  ... was preempted when most didn't: (400) 55.20%
  ... when Declarer is distributional3: (1211 hands) 51.20%
  ... when in a unique contract: (2324) 44.44%
Percentage score when on opening lead: (9543) 48.98%
  ... when leading from a sequence4: (1422) 48.63%
  ... when leading trumps4: (252) 51.67%
  ... when trumps was the only right lead4: (13/135)
  ... when leading a singleton4: (615) 53.60%
  ... when leading a doubleton4: (406) 51.95%
  ... when leading passively4: (2095) 48.41%
  ... when leading actively4: (4715) 48.35%
Highest HCP: ♠ AK94 ♥ AQ ♦ AK7 ♣ AKQ8 [link] (29 hcp)
Freakiest Hand: ♠ - ♥ KJ8653 ♦ - ♣ AQJ10763 [link] (6.5)
Beer cards won: (20)
 
 
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♠ Brenda Mauger 21 25 84.00%
2 A♥ Patrick Carter 30 37 81.08%
3 A♦ Sharon Mosley 21 26 80.77%
4 A♣ Simon Arcand 20 25 80.00%
5 K♠ Dale Lacey 35 44 79.55%
6 K♥ Cynthia Clayton 40 51 78.43%
7 K♦ Mike Dunn 38 49 77.55%
8 K♣ Dennis Apperley 34 44 77.27%
9 Q♠ Helen Smith 26 34 76.47%
10 Q♥ Barbara Wilkes 19 25 76.00%
10 Q♥ Pam Bannatyne 19 25 76.00%
10 Q♥ Mary Allison 19 25 76.00%
10 Q♥ Lynn Hall 19 25 76.00%
14 J♥ Susan Steedman 22 29 75.86%
14 J♥ Ash Hamilton 22 29 75.86%
16 J♣ Bev Penny 27 36 75.00%
16 J♣ Russell Watt 48 64 75.00%
16 J♣ Joanna Silk 21 28 75.00%
16 J♣ John Khouri 21 28 75.00%
20 John Buckleton 98 131 74.81%
21 Joy Watkinson 35 47 74.47%
22 Cheryl Winsor 29 39 74.36%
23 Judith Chandler 25 34 73.53%
23 Nicky Bowers 50 68 73.53%
25 Gay Calderwood 47 64 73.44%
26 Rineke Mansell 19 26 73.08%
27 Carol Minchin 27 37 72.97%
28 Takayo Yanagisawa 51 70 72.86%
29 Anne Gelb 69 95 72.63%
30 Elaine Ford 21 29 72.41%
30 Bruce Marr 21 29 72.41%
32 Kerri McCrae 31 43 72.09%
33 Rachael Goffin 23 32 71.88%
34 Janet Barnard 28 39 71.79%
34 Felicity Hannay 28 39 71.79%
34 Bryan Travers 28 39 71.79%
37 Dianne Benvie 55 77 71.43%
37 Jill Patterson 35 49 71.43%
39 Rex Green 32 45 71.11%
40 John Driscoll 50 71 70.42%
41 Marilyn Jackson 19 27 70.37%
42 Heather Robertson 30 43 69.77%
42 Lynda Bateman 30 43 69.77%
44 Les Gould 23 33 69.70%
45 Mark Robertson 34 49 69.39%
46 Graham Wakefield 45 65 69.23%
47 Rosa Mishkin 29 42 69.05%
48 Sylvester Riddell 31 45 68.89%
49 Jane Stearns 24 35 68.57%
50 Douglas Russell 37 54 68.52%
 
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.
PositionNameHandsAverage
1 A♠ Patrick Carter 37 +0.24
2 A♥ Ngaere Webb 38 +0.24
3 A♦ Richard Stuart 45 +0.20
4 A♣ Jillian Ramsey 33 +0.18
5 K♠ Mary Allison 25 +0.12
6 K♥ Rosa Mishkin 42 +0.12
7 K♦ Gerald Baptist 26 +0.12
8 K♣ Mark Robertson 49 +0.10
9 Q♠ John Buckleton 131 +0.10
10 Q♥ Russell Watt 64 +0.09
11 Q♦ Dale Lacey 44 +0.09
12 Q♣ Duncan White 82 +0.09
13 J♠ Bruce Marr 29 +0.07
14 J♥ Maree Cudby 36 +0.06
15 J♦ Jill Church 62 +0.05
16 J♣ Graham Wakefield 65 +0.05
17 Mike Dunn 49 +0.04
18 John Driscoll 71 +0.03
19 Carol Minchin 37 +0.03
20 Mairi Fitzsimons 38 +0.03
21 Cheryl Winsor 39 +0.03
22 Valerie Gardiner 53 +0.00
22 Ian Beattie 40 +0.00
22 Anne Reid 25 +0.00
22 Janet Barnard 39 +0.00
22 Ash Hamilton 29 +0.00
22 Les Gould 33 +0.00
22 Rex Green 45 +0.00
22 Felicity Hannay 39 +0.00
22 Leo Sim 25 +0.00
 
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.
PositionNameHandsAverage
1 A♠ Lachie Shea 35 +0.83
2 A♥ Patrick Carter 72 +0.78
3 A♦ Pamela Marsland 35 +0.71
4 A♣ Neil Horsfield 68 +0.59
5 K♠ Anne Renwick 29 +0.59
5 K♠ Linda Farley 29 +0.59
5 K♠ Vicki Russell 29 +0.59
8 K♣ David Kranz 67 +0.58
9 Q♠ Helen Smith 76 +0.55
10 Q♥ Brenda Mauger 40 +0.55
11 Q♦ Nan McKay 44 +0.50
11 Q♦ Glenis Palmer 30 +0.50
11 Q♦ John Sylvester 32 +0.50
11 Q♦ Len Eagle 32 +0.50
15 J♦ Bernard Lamusse 41 +0.49
16 J♣ Ian Clayton 157 +0.48
17 Rosemary Hargest 27 +0.48
18 Ruth Allison 40 +0.48
18 Mary Allison 40 +0.48
20 Rebecca Osborne 57 +0.47
21 Lucian Gabriel 51 +0.47
22 Thelma Burd 77 +0.47
22 Duncan White 77 +0.47
24 Cynthia Clayton 107 +0.47
25 Peter Collinge 33 +0.45
25 Gopi Nayar 77 +0.45
27 Caroline Jones 34 +0.44
28 Mark Beavan 28 +0.43
29 Gwyn Lobb 40 +0.43
29 Kate McFadyen 40 +0.43
31 Joanna Silk 33 +0.42
32 Xiao Liu 34 +0.41
33 Jonathan Westoby 27 +0.41
33 Linda Cartner 27 +0.41
35 Peter Hensman 32 +0.41
36 Sophie Kranz 44 +0.39
37 Helene Labreche 57 +0.39
38 Kevin Birch 84 +0.38
38 Premkumar Soundranayagam 63 +0.38
40 Sandra Pearce 32 +0.38
41 Arch Jelley 59 +0.37
42 Bruce Marr 49 +0.37
43 Sylvester Riddell 120 +0.37
44 Robyn Freeman-Greene 93 +0.37
44 Dale Lacey 93 +0.37
46 Christine Wilson 85 +0.36
47 Vivien Roberts 33 +0.36
47 Cecilia Lim 33 +0.36
49 Jody Burchall 119 +0.36
50 Alex Shan 31 +0.35
  
Contract Success
This table shows declarer's success in various contracts.
ContractFrequency% MadeAverage Score
6♠X 2 100.00% 100.00%
2♦X 3 66.67% 63.33%
1♦X 5 60.00% 61.33%
1♥ 50 80.00% 61.20%
2♠X 11 54.55% 59.32%
1♠ 76 78.95% 55.83%
2♠ 685 74.31% 55.70%
1N 593 73.19% 55.54%
2♥ 514 73.74% 54.56%
3N 1431 73.10% 54.53%
6♥ 55 63.64% 54.29%
2♣X 7 57.14% 54.29%
6N 79 59.49% 54.09%
1NX 21 57.14% 53.54%
3♣ 290 67.24% 52.55%
4♠ 1154 66.20% 52.18%
3♦X 17 41.18% 51.78%
4♥ 1091 66.54% 51.78%
2♦ 198 70.71% 50.99%
2♣ 117 72.65% 50.94%
1♦ 22 59.09% 50.18%
7♠ 2 50.00% 50.00%
4♦ 127 47.24% 49.64%
4♣ 113 53.98% 49.13%
3♥ 496 60.69% 48.86%
 
Passed Out 38 100.00% 47.61%
Part Score 4755 66.75% 51.28%
Game+ 4750 63.87% 50.75%
Slam 244 52.46% 48.49%
Grand Slam 7 28.57% 28.57%
Doubled 440 25.68% 39.95%
Redoubled 3 66.67% 66.67%
  
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.
PositionNameGood leadsTotalPercent
1 A♠ Dennis Apperley 25 27 92.59%
2 A♥ Douglas Russell 34 37 91.89%
3 A♦ Bryan Travers 22 25 88.00%
4 A♣ Lee Moselen 26 30 86.67%
5 K♠ Mike Dunn 42 49 85.71%
6 K♥ Rachael Goffin 29 34 85.29%
7 K♦ Carol Joseph 38 45 84.44%
8 K♣ Jane Stearns 26 31 83.87%
9 Q♠ Richard Brookes 28 34 82.35%
9 Q♠ Jill Patterson 42 51 82.35%
11 Q♦ Sharon Marryatt 32 39 82.05%
12 Q♣ John Khouri 22 27 81.48%
13 J♠ Paul Buck 38 47 80.85%
14 J♥ Janet Barnard 21 26 80.77%
15 J♦ Nicky Bowers 41 51 80.39%
16 J♣ Rosheen Gray 20 25 80.00%
16 Neil Horsfield 24 30 80.00%
16 Steve Kinsey 20 25 80.00%
16 Malcolm Smith 32 40 80.00%
20 Ian Clayton 46 58 79.31%
21 Rona Driscoll 42 53 79.25%
22 Dianne Benvie 68 86 79.07%
22 Anthony Wilson 34 43 79.07%
24 Duncan White 30 38 78.95%
25 Kathryn Brookes 22 28 78.57%
26 Christine Wilson 29 37 78.38%
27 Rae Cameron 36 46 78.26%
28 Susan Macken 50 64 78.13%
28 Laurie Hinchcliff 25 32 78.13%
30 Leslie Watt 35 45 77.78%
30 Takayo Yanagisawa 35 45 77.78%
30 Valerie Gardiner 21 27 77.78%
33 Graham Wakefield 24 31 77.42%
34 Tricia Bayley 41 53 77.36%
35 Cathy Carroll 53 69 76.81%
36 John Buckleton 82 107 76.64%
37 Fiona Moon 58 76 76.32%
38 Robin Hardley 38 50 76.00%
38 Pip Duncan 19 25 76.00%
40 Beverley Morris 22 29 75.86%
40 Peter Mclean 22 29 75.86%
42 Elizabeth Grieve 28 37 75.68%
43 Dave Almond 37 49 75.51%
44 John Driscoll 43 57 75.44%
45 Kerri McCrae 30 40 75.00%
45 Heather Robertson 21 28 75.00%
45 Dale Lacey 27 36 75.00%
45 Trish Young 39 52 75.00%
45 Richard Stuart 27 36 75.00%
50 Leah Andrews 38 51 74.51%
  
Opening Bid Success Rates
This table shows the average outcome for each opening bid for the opening side.
OpeningCountFrequencyAverage Result
1♣ 1873 19.71% 49.74%
1♦ 1633 17.18% 49.87%
1♥ 1616 17.00% 50.58%
1♠ 1463 15.39% 50.33%
1N 1473 15.50% 51.54%
2♣ 181 1.90% 51.23%
2♦ 381 4.01% 51.34%
2♥ 226 2.38% 51.99%
2♠ 230 2.42% 52.24%
2N 93 0.98% 50.47%
3♣ 106 1.12% 54.13%
3♦ 71 0.75% 51.58%
3♥ 57 0.60% 55.20%
3♠ 49 0.52% 49.56%
3N 4 0.04% 45.67%
4♣ 2 0.02% 57.29%
4♦ 5 0.05% 77.67%
4♥ 32 0.34% 53.42%
4♠ 6 0.06% 57.69%
4N 1 0.01% 80.00%
5♣ 2 0.02% 41.67%
5♦ 1 0.01% 100.00%
 

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 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

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