April Petite Swiss Final Results

Our three-round April Petite Swiss wrapped up last night with some very exciting games deciding first through third places in each section, as well as some interesting games which didn’t factor into the prizes, including my effort against Frisco Del Rosario wherein my already-shaky position crumbled dramatically in serious time trouble (I haven’t yet had time to analyze the game, Frisco, but am wondering if f6 instead of the more cavalier f5 might have prolonged things).

The full results are included in the attached image and of special note is the performance of Josen Kalra, who gained 80 and 121 points in his Regular and Quick ratings, respectively, with his tie for first in section one. The tournament has already been rated by US Chess—if you spot any errors please let me know and I will correct them immediately.

The winners and their earnings are given below—thank you to everyone who played in this event and we’ll hold another rated tournament beginning in late May or early June. Regards,

Mark Drury

Secton One:
1-3: Alexander Su, $33.33
1-3: Wentao Wu, $33.33
1-3: Josen Kalra, $33.33

Section Two:
1: Hayden Brongersma, $40
2: Banks Bennion, $25
3-4: Samuel Agdamag, $7.50
3-4: Amogh Rao, $7.50

Section Three:
1: Thomas Gerber, $50
2: Charles Mayville, $30
3-5: Jeffrey Ungar, $7
3-5: Andrew Yu, $7
3-5: Shlok Chowdhury, $7

April Petite Swiss Round Two Results

Below are the round two results and round three pairings for our dual-rated G45;d5 Swiss in three sections. The third and final round will begin promptly at 7pm Thursday, April 25th, so please try to arrive at the Arrillaga Family Recreation Center by 6:50pm if at all possible. More details about this tournament may be found on the event page.

Section One

#Name/Rating/IDRd 1Rd 2Rd 3Total
1Kathan ShuklaB 9W 7B 3
1907 158086011.02.02.0
2Alexander SuB 8W 3B 4
1999 128573291.01.51.5
3Wentao WuW 6B 2W 1
1935 166297821.01.51.5
4Tobin BennionB 10byeW 2
1770 126795731.01.51.5
5Josen KalraB 7W 9B 6
1600 126152100.51.51.5
6Taewoo KimB 3W 10W 5
1692 306225090.01.01.0
7Frisco Del RosarioW 5B 1W 8
1900 109877920.50.50.5
8Mark DruryW 2byeB 7
1734 124593130.00.50.5
9Cesar TamondongW 1B 5W 10
1610 124390910.00.00.0
10David ZhaoW 4B 6B 9
1543 147937840.00.00.0

Section Two

#Name/Rating/IDRd 1Rd 2Rd 3Total
1Samuel AgdamagB 7W 4B 2
1458 148747341.02.02.0
2Hayden BrongersmaB 5W 7W 1
1118 312404411.02.02.0
3Banks BennionB 6byeW 4
1351 301756461.01.51.5
4Leia LinW 8B 1B 3
1453 171108281.01.01.0
5Kornel CsernaiW 2B 8W 6
1265 305943800.01.01.0
6Amogh RaoW 3byeB 5
1166p 309493410.01.01.0
7Atul DhingraW 1B 2bye
1204p 312363220.00.00.0
8Hugo PuB 4W 5bye
1177 310938600.00.00.0

Section Three

#Name/Rating/IDRd 1Rd 2Rd 3Total
1Jeffrey UngarB 6W 4B 2
1063p 163967431.02.02.0
2Thomas GerberW 7B 5W 1
1061p 316475051.02.02.0
3Charles MayvilleB 10byeW 5
1012p 316403661.01.51.5
4Brian ChenW 9B 1W 7
839p 315837531.01.01.0
5Austin ChenB 8W 2B 3
820 312932491.01.01.0
6Andrew YuW 1B 9W 8
718 313640870.01.01.0
7Shlok ChowdhuryB 2W 10B 4
566 306279950.01.01.0
8Neeraj RaoW 5byeB 6
1066 307892960.00.50.5
9Maxime GerberB 4W 6B 10
339p 316475540.00.00.0
10Victor ChenW 3B 7W 9
265 307608480.00.00.0

April Petite Swiss Round One Pairings

Below are the round one pairings for our dual-rated G45;d5 Swiss in three sections. The first round begins promptly at 7pm this Thursday, April 4th, so please try to arrive at the Arrillaga Family Recreation Center by 6:50pm if at all possible. More details about this tournament may be found on the event page.

SECTION ONE

#Name/Rating/IDRd 1Total
1Alexander SuB 6
1999 128573290.0
2Wentao WuW 7
1935 166297820.0
3Kathan ShuklaB 8
1907 158086010.0
4Frisco Del RosarioW 9
1900 109877920.0
5Tobin BennionB 10
1770 126795730.0
6Mark DruryW 1
1734 124593130.0
7Taewoo KimB 2
1692 306225090.0
8Cesar TamondongW 3
1610 124390910.0
9Josen KalraB 4
1600 126152100.0
10David ZhaoW 5
1543 147937840.0

SECTION TWO

#Name/Rating/IDRd 1Total
1Samuel AgdamagB 5
1458 148747340.0
2Leia LinW 6
1453 171108280.0
3Banks BennionB 7
1351 301756460.0
4Kornel CsernaiW 8
1265 305943800.0
5Atul DhingraW 1
1204p 312363220.0
6Hugo PuB 2
1177 310938600.0
7Amogh RaoW 3
1166p 309493410.0
8Hayden BrongersmaB 4
1118 312404410.0

SECTION THREE

#Name/Rating/IDRd 1Total
1Neeraj RaoW 6
1066 307892960.0
2Jeffrey UngarB 7
1063p 163967430.0
3Thomas GerberW 8
1061p 316475050.0
4Charles MayvilleB 10
1012p 316403660.0
5Brian ChenW 9
839p 315837530.0
6Austin ChenB 1
820 312932490.0
7Andrew YuW 2
718 313640870.0
8Shlok ChowdhuryB 3
566 306279950.0
9Maxime GerberB 5
339p 316475540.0
10Victor ChenW 4
265 307608480.0

Impromptu Blitz #13 Results

Twenty-five people played in our impromptu blitz tournament this past Thursday, a G/5+2 affair of five rounds and the slightly longer time control helped to shake up the results in yet another strong field. Gabriel Sanchez took sole first with 4.5 points while Liam Liu and David Zhao shared second at 4, ahead of some very strong master- and expert-level competition. Kunal Modi grabbed sole fourth at 3.5, leaving a raft of players to share fifth with 3 points.

Of particular note, chess expert, author, journalist and friend Frisco Del Rosario was able to visit the club for the first time and it was great to see and play a game with him—hopefully you will join us again soon, Frisco! Full results are in the table below and thank you to everyone who played in this event.

As a reminder, we’ll begin a US Chess dual-rated Swiss-system event over three weeks beginning this Thursday, April 4th, and concluding April 25th (there will be no chess club meeting April 18th). Players will be divided into groups of 6 or 8 based on rating and will play one game at G/45;d5 each week. A few spots remain for this event and more information and a registration link may be found here. As always, please register early if you plan to play in this event.

#PlayerRd 1Rd 2Rd 3Rd 4Rd 5Total
1Gabriel SanchezW 3B 2W 5B 4W 7
1.02.03.03.54.54.5
2Liam LiuB 22W 1W 15B 12W 4
1.01.02.03.04.04.0
3David ZhaoB 1W 21B 22W 17B 11
0.01.02.03.04.04.0
4Kunal ModiW 12B 8W 6W 1B 2
1.02.03.03.53.53.5
5Andy ApplebaumB 11W 16B 1W 7B 6
1.02.02.02.53.03.0
6Pranav JindalB 14W 13B 4W 15W 5
1.01.51.52.53.03.0
7Frisco Del RosarioW 17B 9W 13B 5B 1
1.01.52.53.03.03.0
8Hayden BrongersmaB 20W 4B 11W 22B 13
1.01.01.02.03.03.0
9Mark DruryB 23W 7byebyebye
1.01.52.02.53.03.0
10Renzo FrigatoW 24B 15W 17B 18W 19
1.01.01.02.03.03.0
11Rohan KapreW 5B 18W 8B 19W 3
0.01.02.03.03.03.0
12Josen KalraB 4W 20B 16W 2B 17
0.01.02.02.03.03.0
13Cesar TamondongW 19B 6B 7W 16W 8
1.01.51.52.52.52.5
14Max CheungW 6B 19W 25B 20B 21
0.00.01.01.52.52.5
15Hugo PubyeW 10B 2B 6W 20
0.51.51.51.52.52.5
16Evan SobelW 18B 5W 12B 13W 24
1.01.01.01.02.02.0
17Austin ChenB 7W 23B 10B 3W 12
0.01.02.02.02.02.0
18Brian ChenB 16W 11B 23W 10B 22
0.00.01.01.02.02.0
19Shlok ChowdhuryB 13W 14B 21W 11B 10
0.01.02.02.02.02.0
20Joey LoW 8B 12W 24W 14B 15
0.00.01.01.51.51.5
21Victor ChenbyeB 3W 19B 25W 14
0.50.50.51.51.51.5
22George PurtellW 2B 24W 3B 8W 18
0.01.01.01.01.01.0
23Bud WollW 9B 17W 18B 24W 25
0.00.00.00.01.01.0
24Wendy GuB 10W 22B 20W 23B 16
0.00.00.01.01.01.0
25Malcolm Willigbye—-B 14W 21B 23
0.5U0.50.50.50.50.5

Impromptu Blitz #12 Results

Just as with the week before, twenty-one people played in our impromptu blitz tournament this past Thursday, another G/3+2 affair of five rounds and, as with the week before, Pranav Jindal claimed sole first with 4.5 points, the lone draw ceded to young Liam Liu. Three others tied for second in this battle of blitz heavyweights, with Andy Applebaum, Kunal Modi and Cesar Tamondong all securing 4 points (I don’t know that Cesar has ever scored less than 4 points in similar events)—well played, all of you! Full results are in the table below and thank you to everyone who joined us for this event.

We’ll hold one more casual evening this week, with another free blitz tournament beginning at 7pm, then will commence a US Chess dual-rated Swiss-system event over three weeks beginning Thursday, April 4th, and concluding April 25th (there will be no chess club meeting April 18th). Players will be divided into groups of 6 or 8 based on rating and will play one game at G/45;d5 each week. A few spots remain for this event and more information and a registration link may be found here.

Please let me know if you have any questions and I hope to see many of you at the club this Thursday!

#PlayerRd 1Rd 2Rd 3Rd 4Rd 5Total
1Pranav JindalB 15W 5W 10B 6B 3
1.01.52.53.54.54.5
2Andy ApplebaumB 13W 12B 6W 3B 5
1.02.03.03.04.04.0
3Kunal ModiW 14B 7W 4B 2W 1
1.02.03.04.04.04.0
4Cesar TamondongW 20B 11B 3W 15B 9
1.02.02.03.04.04.0
5Liam LiuW 9B 1B 12W 8W 2
1.01.52.53.53.53.5
6Alex ChinW 16B 8W 2W 1B 14
1.02.02.02.03.03.0
7Richard WangB 19W 3B 15W 18B 17
1.01.01.02.03.03.0
8Hayden BrongersmaB 21W 6B 16B 5W 12
1.01.02.02.03.03.0
9Hugo PuB 5W 13B 19B 14W 4
0.01.02.03.03.03.0
10Mark DruryW 17byeB 1byebye
1.01.51.52.02.52.5
11Max CheungbyeW 4—-W 19B 15
0.50.5U0.51.52.52.5
12Jason CruzB 18B 2W 5W 16B 8
1.01.01.02.02.02.0
13Samuel AgdamagW 2B 9W 21B 17W 18
0.00.01.01.02.02.0
14Kornel CsernaiB 3W 19B 18W 9W 6
0.01.02.02.02.02.0
15Jeff McGinnisW 1B 17W 7B 4W 11
0.01.02.02.02.02.0
16Austin ChenB 6W 21W 8B 12W 20
0.01.01.01.02.02.0
17Joey LoB 10W 15B 20W 13W 7
0.00.01.02.02.02.0
18Beata Ang-DuttaW 12B 20W 14B 7B 13
0.01.01.01.01.01.0
19Brian ChenW 7B 14W 9B 11W 21
0.00.00.00.01.01.0
20Maybelline HinloB 4W 18W 17B 21B 16
0.00.00.01.01.01.0
21Gautam DuttaW 8B 16B 13W 20B 19
0.00.00.00.00.00.0

Impromptu Blitz #11 Results

Twenty-one people played in our impromptu blitz tournament last Thursday, a G/3+2 affair of five rounds, and Pranav Jindal once again claimed sole first with 4.5 points, a first-round bye notwithstanding. Gabe Sanchez, Ramkumar Jeyaraman and 9-year-old Liam Liu tied for second with 4 points, followed by Kornel Csernai in sole 5th with 3.5—well played, all of you! Full results are in the table below and thank you to everyone who joined us for this event.

We’ll hold two more casual evenings this week and next, with free blitz tournaments occurring in each, then will commence a US Chess dual-rated Swiss-system event over three weeks beginning Thursday, April 4th, and concluding April 25th (there will be no chess club meeting April 18th). Players will be divided into groups of 6 or 8 based on rating and will play one game at G/45;d5 each week. More information and a registration link may be found here.

Please let me know if you have any questions and I hope to see many of you at the club this Thursday!

#Name/Rating/IDRd 1Rd 2Rd 3Rd 4Rd 5Total
1Pranav JindalbyeW 5B 11W 12B 3
0.51.52.53.54.54.5
2Gabe SanchezB 8W 13B 6W 3B 9
1.02.03.03.04.04.0
3Ramkumar JeyaramanB 19W 10B 4B 2W 1
1.02.03.04.04.04.0
4Liam LiuB 16W 12W 3B 7B 6
1.02.02.03.04.04.0
5Kornel CsernaibyeB 1W 21W 13B 12
0.50.51.52.53.53.5
6Lauren GoodkindW 9B 7W 2B 15W 4
1.02.02.03.03.03.0
7Hayden BrongersmaB 20W 6B 19W 4B 16
1.01.02.02.03.03.0
8David ZhaoW 2B 18W 9B 19W 15
0.01.01.02.03.03.0
9Austin ChenB 6W 20B 8W 11W 2
0.01.02.03.03.03.0
10Mark Drury—-B 3byebyebye
X1.01.01.52.02.52.5
11Rohan KaprebyeW 21W 1B 9B 17
0.51.51.51.52.52.5
12Andy ApplebaumW 15B 4W 14B 1W 5
1.01.02.02.02.02.0
13Evan SobelW 17B 2W 15B 5W 19
1.01.01.01.02.02.0
14Renzo FrigatobyebyeB 12W 16B 20
0.51.01.01.02.02.0
15Arnav BhavsarB 12W 16B 13W 6B 8
0.01.02.02.02.02.0
16George PurtellW 4B 15W 18B 14W 7
0.00.01.02.02.02.0
17Brian ChenB 13W 19B 20W 18W 11
0.00.01.02.02.02.0
18Bud WollbyeW 8B 16B 17W 21
0.50.50.50.51.51.5
19Beata Ang-DuttaW 3B 17W 7W 8B 13
0.01.01.01.01.01.0
20Jerome OrielW 7B 9W 17B 21W 14
0.00.00.01.01.01.0
21Gautam DuttabyeB 11B 5W 20B 18
0.50.50.50.50.50.5

Missed Opportunities

Well, we sampled yet another chess variant this past Thursday evening, one I’ll now dub “ACD” or “Absent Club Director,” my not-so-clever way of stating that I forgot about chess club until round 7:30pm that evening, something which had not yet happened in the two years and two months of the club’s existence.

Perhaps it was Leap Day, likely just senility, but suffice to say I worked in my company’s Fremont office Thursday and a number of coincidences conspired to make me think it was Wednesday. I only realized my error when I arrived home and began thinking about dinner—something triggered the “this doesn’t feel like Wednesday” revelation and subsequent scramble to the club round 7:30pm.

I’m very sorry to all those who were there that evening awaiting boards, pieces and clocks. We had quite a crowd looking forward to a blitz tournament, it seemed, and I appreciate your patience and good humor where my foibles are concerned, as always.

Note that the club will not meet this Thursday, March 7th, as previously announced but we will meet March 14th for a casual/blitz tournament evening and a longer, more formal event will follow the week after. Regards,

Mark Drury

Chess960 Draft Tournament

Our club dabbled in yet another interesting chess variant Thursday with the Chess960 Draft Tournament and, poorly as I did this time around, I think I speak for everyone in stating that the event was a lot of fun, with unusual positions seen in every round. In one of my games I made the cardinal mistake of failing to take stock of immediate threats on my first move and, as a result, lost a pawn and the exchange to a marauding bishop on move 2 or 3, which was mildly embarrassing. The timed draft aspect of this variant really adds something new and different to the game, especially with a relatively short time control like G/7;d3, but players got the hang of it quickly and there were few if any illegal setups that I’m aware of.

Eighteen participants turned out to be perfect for the four rounds we were able to play and congratulations are once again due to Pranav Jindal for another perfect score, his 4-0 result half a point better than Gabe Sanchez’s 3.5 for sole second. David Zhao and Josen Kalra enjoyed another excellent showing with their shared third place finish at 3 points, ahead of some very strong expert-level competition. Thank you to everyone who played in this event, please let me know if you have any feedback and we’ll give it another go later this year. Regards,

Mark Drury

#PlayerRd 1Rd 2Rd 3Rd 4Total
1Pranav JindalW 9B 11W 7B 5
1.02.03.04.04.0
2Gabriel SanchezW 3B 8W 5B 7
1.02.02.53.53.5
3David ZhaoB 2W 16B 17W 9
0.01.02.03.03.0
4Josen KalraW 6B 7W 12B 11
1.01.02.03.03.0
5Alaric SteinB 10W 14B 2W 1
1.02.02.52.52.5
6Kunal ModiB 4W 17B 9W 10
0.01.01.02.02.0
7Wentao WuB 16W 4B 1W 2
1.02.02.02.02.0
8Alex WuW 12W 2B 10W 17
1.01.01.02.02.0
9Michael ByunB 1W 18W 6B 3
0.01.02.02.02.0
10Hayden BrongersmaW 5B 15W 8B 6
0.01.02.02.02.0
11Austin ChenB 13W 1B 14W 4
1.01.02.02.02.0
12Hugo PuB 8W 13B 4B 15
0.01.01.02.02.0
13Richard WangW 11B 12W 16B 14
0.00.01.01.51.5
14Renzo FrigatoW 18B 5W 11W 13
1.01.01.01.51.5
15Jeremy ArthurB 17W 10B 18W 12
0.00.01.01.01.0
16Mark DruryW 7B 3B 13W 18
0.00.00.01.01.0
17Aditya DhamdhereW 15B 6W 3B 8
1.01.01.01.01.0
18Carlos FuertesB 14B 9W 15B 16
0.00.00.00.00.0

A4c Variant Tournament

We enjoyed an excellent turnout this past Thursday for our first foray into A4c Chess, as we’re styling it (though the variant’s creator may yet object). As a reminder, this variant is best-of-three games against each opponent with ten total minutes on one’s clock, so time management across the two or three games in each match is critical. Indeed, we saw a number of matches in each round where time was used, how shall we say, less than optimally, which led to severe time crunches in the third game and to much clock slapping (sometimes in a vain attempt to stave off the inevitable loss on time)—it definitely made for interesting spectacle and was fun to watch. More information about the variant and the tournament details may be found here.

Twenty-eight people participated in three sections, which worked well for the three rounds we were able to squeeze in during the evening. Below are the results for each section and congratulations are due to winners Kunal (group one), David (group two) and Hayden and Austin (group three). Thank you to everyone who played in this event and the feedback was universally positive, even with the late start, so we’ll definitely play A4c Chess again soon.

Group One

#PlayerRd 1Rd 2Rd 3Total
1Kunal ModiB 8W 5B 3
1.02.03.03.0
2Pranav JindalW 7B 3W 6
1.01.52.52.5
3Gabriel SanchezB 4W 2W 1
1.01.51.51.5
4Karim SeadaW 3B 7B 5
0.01.01.51.5
5Wentao WuB 6B 1W 4
1.01.01.51.5
6Alaric SteinW 5B 8B 2
0.01.01.01.0
7Josen KalraB 2W 4W 8
0.00.01.01.0
8Renzo FrigatoW 1W 6B 7
0.00.00.00.0

Group Two

#PlayerRd 1Rd 2Rd 3Total
1David ZhaoW 6B 4B 2
1.02.03.03.0
2Paul TanenbaumW 8B 5W 1
1.02.02.02.0
3Pablo JadzinskyB 4W 6B 7
0.01.02.02.0
4Michael ByunW 3W 1B 5
1.01.02.02.0
5Samuel AgdamagB 7W 2W 4
1.01.01.01.0
6Amogh RaoB 1B 3W 8
0.00.01.01.0
7Charles MayvilleW 5B 8W 3
0.01.01.01.0
8Evan SobelB 2W 7B 6
0.00.00.00.0

Group Three

#PlayerRd 1Rd 2Rd 3Total
1Hayden BrongersmaW 10B 8B 3
1.02.03.03.0
2Austin ChenW 7B 4W 6
1.02.03.03.0
3Atul DhingraW 9B 5W 1
1.02.02.02.0
4Fadi ArodakiB 12W 2W 8
1.01.02.02.0
5Hugo PuW 11W 3B 7
1.01.02.02.0
6George PurtellB 8W 10B 2
0.01.01.01.0
7Kumaravel MohamkumarB 2W 12W 5
0.01.01.01.0
8Aditya DhamdhereW 6W 1B 4
1.01.01.01.0
9Will KesselmanB 3W 11—-
0.01.0U1.01.0
10Shlok ChowdhuryB 1B 6W 12
0.00.01.01.0
11Victor ChenB 5B 9bye
0.00.00.50.5
12Bud WollW 4B 7B 10
0.00.00.00.0

Impromptu Blitz #10 Results

We had an excellent turnout for our impromptu blitz tournament last night, with 25 people participating, including a number of first- or second-time visitors—welcome to Munci Inonu, Wyatt Morgan, Pablo Jadzinsky, Evan Sobel, Serena Shinault and Carlos Fuertes and thank you for joining us! Renzo Frigato was able to join us again after a prolonged absence and it was great to see him, as well! This event saw a somewhat unusual 4-way tie for first with four points out of five—congratulations to Munci Inonu, Pranav Jindal, Josen Kalra and David Zhao on their excellent play! The full results for the tournament follow and next week we will play another free, fun-focused tournament using the A4c variant—more details will be on our Events page later today.

#PlayerRd 1Rd 2Rd 3Rd 4Rd 5Total
1Munci InonuB 16W 9B 7W 13W 2
1.02.02.03.04.04.0
2Pranav JindalW 17B 4W 15W 7B 1
1.02.03.04.04.04.0
3Josen KalraB 12W 18B 16W 6B 7
0.01.02.03.04.04.0
4David ZhaoW 21W 2B 11B 8W 9
1.01.02.03.04.04.0
5Renzo FrigatobyeW 25B 6B 12W 13
0.51.51.52.53.53.5
6Wyatt MorganbyebyeW 5B 3B 16
0.51.02.02.03.03.0
7Olivia SmithB 11W 10W 1B 2W 3
1.02.03.03.03.03.0
8Pablo JadzinskyB 18W 12B 10W 4B 17
1.01.02.02.03.03.0
9Alex WuW 24B 1W 17B 15B 4
1.01.02.03.03.03.0
10Evan SobelW 22B 7W 8B 20W 19
1.01.01.02.03.03.0
11Michael ByunW 7B 22W 4B 24W 15
0.01.01.02.03.03.0
12Austin ChenW 3B 8B 13W 5W 20
1.02.02.02.03.03.0
13Alex SubyeB 20W 12B 1B 5
0.51.52.52.52.52.5
14Mark DruryW 23B 15byebyebye
1.01.01.52.02.52.5
15Jeff McGinnisB 19W 14B 2W 9B 11
1.02.02.02.02.02.0
16Samuel AgdamagW 1B 24W 3B 23W 6
0.01.01.02.02.02.0
17Charles MayvilleB 2W 21B 9B 18W 8
0.01.01.02.02.02.0
18Hayden BrongersmaW 8B 3B 21W 17W 23
0.00.01.01.02.02.0
19Serena ShinaultW 15B 23W 20B 25B 10
0.01.01.02.02.02.0
20Hugo PubyeW 13B 19W 10B 12
0.50.51.51.51.51.5
21Aditya DhamdhereB 4B 17W 18W 22B 24
0.00.00.00.51.51.5
22Shlok ChowdhuryB 10W 11W 24B 21W 25
0.00.00.00.51.51.5
23Brian ChenB 14W 19B 25W 16B 18
0.00.01.01.01.01.0
24Jeff UngarB 9W 16B 22W 11W 21
0.00.01.01.01.01.0
25Carlos FuertesbyeB 5W 23W 19B 22
0.50.50.50.50.50.5