CHEN Nan Nan · BEIJING ZHU YE
455rank
-14.0Butler · 90 bds
-0.16per board
±4.0swing
-0.60vs par /bd · #542/672
-0.49adjusted /bd
by round
vs par split: bidding +0.08 · play -0.18
Strength of schedule: opponents averaged -0.33/bd (an easy draw) → opponent-adjusted -0.49/bd
Card play — on target: opening leads 72.2% #543 of 671 · declarer play 75.0% #406 of 671 · defence 79.4% #534 of 672
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | · | 72.2% (18) |
| Declarer play | · | 75.0% (12) |
| Defence | · | 79.4% (34) |
Opening leads by suit led: ♠ 50.0% (2) · ♥ 100.0% (3) · ♦ 100.0% (6) · ♣ 42.9% (7)
vs par by strain: a suit -0.10 (62)
vs par by level: part-score +0.79 (24) · game -1.39 (36) · slam +12.50 (2)
By role: declaring +0.19/bd (-2.60 vs par · 42) · defending -0.46/bd (+1.15 vs par · 48)
By vulnerability: vulnerable -0.66/bd (-1.00 vs par · 45) · not vulnerable +0.35/bd (-0.20 vs par · 45)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 3 | Y.Jing | D.Stern – R.Krochmalik | Open | 10 | +7.5 | +0.75 | -0.60 |
| Round 4 | Z.Guo | S.Liu – Y.Liang | Closed | 10 | +3.9 | +0.39 | +0.40 |
| Round 5 | Z.Guo | A.Versace – E.Bove | Open | 10 | +4.3 | +0.43 | +0.50 |
| Round 6 | L.Hu | Y.Zhang – Y.Niu | Closed | 10 | +7.2 | +0.72 | +1.80 |
| Round 7 | Y.Jing | C.Yinong – C.Endang | Closed | 10 | -6.5 | -0.65 | +0.30 |
| Round 8 | Y.Jing | H.Chen – Z.Chen | Closed | 10 | -25.1 | -2.51 | -2.20 |
| Round 9 | Y.Jing | F.Alquiros – F.Mayer | Closed | 10 | +6.6 | +0.66 | +1.20 |
| Round 12 | Y.Jing | A.Hobart – D.Piafsky | Closed | 10 | -18.0 | -1.80 | -3.00 |
| Round 13 | Y.Jing | Z.Nan – S.Gu | Open | 10 | +6.1 | +0.61 | -3.80 |
Every board — best Butler first↑ top
vs par = IMPs this pair scored above (+) or below (−) the board’s double-dummy par — what bidding and play (theirs and the opponents’) added or gave away against perfect play.
| Butler | Round | Opponents | Bd | Contract | Lead | Res | vs par |
|---|---|---|---|---|---|---|---|
| +9.7 | Round 5 | LEONINA | 15 | 7♦ | ♠J | -1 | +14 |
| +9.6 | Round 4 | HUBEI DONGFENG | 1 | 4♥x | ♥5 | -3 | +12 |
| +8.7 | Round 3 | STERN | 23 | 3♣ | ♥K | +2 | +11 |
| +7.3 | Round 7 | SHANGHAI GOODWAY | 8 | 4♥ | ♣A | = | +12 |
| +7.2 | Round 4 | HUBEI DONGFENG | 4 | 3N | ♣K | = | -1 |
| +6.9 | Round 3 | STERN | 27 | 3N | ♥7 | +1 | +7 |
| +6.6 | Round 12 | BARAN | 28 | 4♠ | ♦K | = | +5 |
| +6.5 | Round 13 | TIANJIN UNION | 6 | 3N | ♥8 | +2 | -11 |
| +6.3 | Round 3 | STERN | 28 | 4♥ | ♦6 | = | +5 |
| +5.3 | Round 6 | SHANGHAI YOUTH 5 | 21 | 6♥ | ♣A | -1 | +11 |
| +4.5 | Round 9 | EGAN | 25 | 3N | ♠6 | -2 | +8 |
| +4.3 | Round 9 | EGAN | 21 | 3N | ♣8 | +1 | +5 |
| +3.8 | Round 8 | XIAMEN | 18 | 2♠ | ♥Q | -2 | +5 |
| +3.4 | Round 5 | LEONINA | 19 | 4♥ | ♣6 | -1 | +5 |
| +3.3 | Round 3 | STERN | 30 | 3N | ♥7 | = | -6 |
| +3.3 | Round 13 | TIANJIN UNION | 2 | 4♥ | ♠10 | = | -1 |
| +3.1 | Round 9 | EGAN | 26 | 4♠ | ♠4 | -1 | +6 |
| +3.1 | Round 12 | BARAN | 27 | 4♥ | ♦Q | +1 | -5 |
| +2.6 | Round 6 | SHANGHAI YOUTH 5 | 25 | 3♥ | ♦8 | -1 | +6 |
| +2.5 | Round 9 | EGAN | 22 | 2♠ | ♦6 | +2 | +6 |
| +1.9 | Round 7 | SHANGHAI GOODWAY | 7 | 4♠ | ♥3 | -1 | +6 |
| +1.5 | Round 6 | SHANGHAI YOUTH 5 | 22 | 3♦ | ♥Q | -1 | -4 |
| +1.5 | Round 13 | TIANJIN UNION | 5 | 3N | ♠6 | +3 | -12 |
| +1.4 | Round 4 | HUBEI DONGFENG | 8 | 3♠ | ♦Q | = | +0 |
| +1.3 | Round 6 | SHANGHAI YOUTH 5 | 29 | 1Nx | ♣2 | = | +2 |
| +1.3 | Round 12 | BARAN | 30 | 4♥ | ♦A | -1 | +5 |
| +1.1 | Round 6 | SHANGHAI YOUTH 5 | 26 | 4♠ | ♦7 | = | +5 |
| +1.0 | Round 5 | LEONINA | 14 | 2♠ | ♦9 | = | +0 |
| +0.9 | Round 13 | TIANJIN UNION | 9 | 4♠ | ♦6 | = | +1 |
| +0.8 | Round 5 | LEONINA | 12 | 1♠ | ♦K | = | +1 |
| +0.8 | Round 5 | LEONINA | 16 | 1Nx | ♦K | -1 | +1 |
| +0.8 | Round 13 | TIANJIN UNION | 3 | 3N | ♥7 | +2 | +0 |
| +0.7 | Round 9 | EGAN | 23 | 1N | ♥4 | = | +1 |
| +0.6 | Round 5 | LEONINA | 20 | 4♠ | ♣A | = | -1 |
| +0.6 | Round 9 | EGAN | 28 | 3N | ♥J | +1 | -5 |
| +0.5 | Round 13 | TIANJIN UNION | 8 | 4♠ | ♠4 | = | -14 |
| +0.2 | Round 6 | SHANGHAI YOUTH 5 | 27 | 4♥ | ♦K | -1 | +5 |
| +0.2 | Round 7 | SHANGHAI GOODWAY | 4 | 4♥ | ♠3 | = | +1 |
| +0.1 | Round 4 | HUBEI DONGFENG | 2 | 3N | ♠10 | +1 | +0 |
| +0.1 | Round 8 | XIAMEN | 16 | 2N | ♣A | -1 | -1 |
| -0.0 | Round 3 | STERN | 25 | 1N | ♥10 | = | +0 |
| -0.0 | Round 6 | SHANGHAI YOUTH 5 | 28 | 3N | ♠2 | +2 | +0 |
| +0.0 | Round 7 | SHANGHAI GOODWAY | 3 | 3♦ | ♠K | -2 | +9 |
| -0.1 | Round 7 | SHANGHAI GOODWAY | 1 | 4♥ | ♣A | = | -1 |
| -0.1 | Round 7 | SHANGHAI GOODWAY | 9 | 4♥ | ♥7 | +1 | -11 |
| -0.3 | Round 3 | STERN | 21 | 1N | ♣10 | +1 | -1 |
| -0.3 | Round 13 | TIANJIN UNION | 10 | 2N | ♠Q | +1 | -1 |
| -0.4 | Round 4 | HUBEI DONGFENG | 6 | 3♠ | ♣10 | +2 | +10 |
| -0.4 | Round 6 | SHANGHAI YOUTH 5 | 23 | 2♥ | ♣A | +1 | +0 |
| -0.4 | Round 6 | SHANGHAI YOUTH 5 | 30 | 3N | ♠2 | -1 | -5 |
| -0.5 | Round 12 | BARAN | 23 | 5♦ | ♠6 | -1 | -6 |
| -0.7 | Round 7 | SHANGHAI GOODWAY | 10 | 2♥ | ♣Q | +1 | +0 |
| -0.8 | Round 12 | BARAN | 25 | 3N | ♥5 | +2 | -6 |
| -0.9 | Round 8 | XIAMEN | 13 | 4♠ | ♥K | +2 | -7 |
| -0.9 | Round 9 | EGAN | 24 | 4♥ | ♦2 | = | +5 |
| -1.0 | Round 7 | SHANGHAI GOODWAY | 2 | 1N | ♦8 | = | +1 |
| -1.0 | Round 8 | XIAMEN | 14 | 3♠ | ♥8 | -2 | +0 |
| -1.2 | Round 5 | LEONINA | 11 | 3♥ | ♣9 | -2 | -5 |
| -1.2 | Round 5 | LEONINA | 17 | 2♠ | ♠5 | -1 | +2 |
| -1.2 | Round 13 | TIANJIN UNION | 1 | 4♠ | ♠4 | = | +0 |
| -1.3 | Round 3 | STERN | 29 | 5♦ | ♣A | +1 | +1 |
| -1.3 | Round 13 | TIANJIN UNION | 7 | 4♥ | ♦A | +1 | +0 |
| -1.5 | Round 4 | HUBEI DONGFENG | 3 | 3N | ♥5 | +1 | +1 |
| -1.5 | Round 8 | XIAMEN | 17 | 3N | ♥7 | +1 | +5 |
| -1.5 | Round 12 | BARAN | 29 | 4♠ | ♥Q | -1 | +0 |
| -1.9 | Round 9 | EGAN | 27 | 4♥ | ♦9 | -1 | -5 |
| -1.9 | Round 9 | EGAN | 29 | 4♠ | ♥K | -2 | -3 |
| -2.2 | Round 3 | STERN | 24 | 3♣ | ♦A | -1 | -3 |
| -2.2 | Round 4 | HUBEI DONGFENG | 7 | 2♠ | ♠3 | +2 | -1 |
| -2.6 | Round 8 | XIAMEN | 12 | 1♠ | ♦7 | +2 | +0 |
| -2.7 | Round 8 | XIAMEN | 19 | 2♣ | ♠3 | -2 | +0 |
| -3.1 | Round 4 | HUBEI DONGFENG | 9 | 3♦ | ♥8 | = | -6 |
| -3.3 | Round 5 | LEONINA | 18 | 3♠ | ♣A | +1 | -1 |
| -3.6 | Round 4 | HUBEI DONGFENG | 5 | 1N | ♦5 | +1 | -5 |
| -3.6 | Round 4 | HUBEI DONGFENG | 10 | 1♠ | ♣J | +1 | -6 |
| -3.6 | Round 12 | BARAN | 22 | 4♦ | ♥10 | -1 | -5 |
| -4.0 | Round 6 | SHANGHAI YOUTH 5 | 24 | 2N | ♣3 | +2 | -2 |
| -4.2 | Round 3 | STERN | 26 | 4♠ | ♦Q | = | -8 |
| -4.4 | Round 9 | EGAN | 30 | 4♠x | ♣K | -1 | -6 |
| -4.6 | Round 7 | SHANGHAI GOODWAY | 6 | 5♣x | ♦A | -4 | -4 |
| -4.6 | Round 8 | XIAMEN | 11 | 3N | ♦6 | +1 | -4 |
| -4.6 | Round 13 | TIANJIN UNION | 4 | 4♠ | ♣5 | +1 | +0 |
| -5.4 | Round 12 | BARAN | 24 | 2♠ | ♦4 | +1 | +0 |
| -6.0 | Round 8 | XIAMEN | 15 | 3N | ♣6 | -2 | -8 |
| -6.3 | Round 5 | LEONINA | 13 | 3N | ♠2 | -1 | -11 |
| -6.3 | Round 12 | BARAN | 21 | 4♥ | ♣2 | = | -8 |
| -9.4 | Round 7 | SHANGHAI GOODWAY | 5 | 4♠x | ♥J | +1 | -10 |
| -9.7 | Round 3 | STERN | 22 | 5♣ | ♥6 | -1 | -12 |
| -9.7 | Round 8 | XIAMEN | 20 | 4♠ | ♣A | -1 | -12 |
| -10.9 | Round 12 | BARAN | 26 | 4♥ | ♣4 | = | -10 |