LIU Chuan · ASYMCHEM
469rank
-25.5Butler · 100 bds
-0.26per board
±4.3swing
-0.87vs par /bd · #514/567
-0.23adjusted /bd
by round
vs par split: bidding -1.06 · play +0.15
Strength of schedule: opponents averaged +0.03/bd (an average draw) → opponent-adjusted -0.23/bd
Card play — on target: opening leads 80.0% #285 of 567 · declarer play 80.8% #197 of 567 · defence 77.6% #472 of 567
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 75.0% (4) | 81.0% (21) |
| Declarer play | 66.7% (9) | 88.2% (17) |
| Defence | 69.2% (13) | 80.6% (36) |
Opening leads by suit led: ♠ 83.3% (6) · ♥ 83.3% (6) · ♦ 80.0% (5) · ♣ 75.0% (8)
vs par by strain: NT -0.68 (25) · a suit -0.99 (74)
vs par by level: part-score -0.76 (41) · game -0.85 (53) · slam -2.80 (5)
By role: declaring -0.56/bd (-2.80 vs par · 51) · defending +0.07/bd (+1.14 vs par · 49)
By vulnerability: vulnerable +0.38/bd (+0.22 vs par · 51) · not vulnerable -0.91/bd (-2.00 vs par · 49)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 1 | Z.Xie | B.Naidoo – P.Sinha | Open | 10 | -19.6 | -1.96 | -1.60 |
| Round 3 | Z.Xie | H.Oh – A.Manno | Closed | 10 | -10.7 | -1.07 | -0.10 |
| Round 4 | Z.Xie | W.Hu – L.Li | Open | 10 | -2.3 | -0.23 | -0.10 |
| Round 6 | Z.Xie | D.Wang – Z.Zeng | Open | 10 | +3.5 | +0.35 | +2.00 |
| Round 8 | Z.Xie | Y.Wang – Y.Wang | Closed | 10 | +7.5 | +0.75 | +0.50 |
| Round 9 | Z.Xie | D.Fraser – S.Fraser | Open | 10 | -9.2 | -0.92 | -4.40 |
| Round 10 | Z.Xie | A.Riamsree – V.Svangsopakul | Closed | 10 | +10.7 | +1.07 | -0.90 |
| Round 11 | Z.Xie | S.Humphries – D.Humphries | Closed | 10 | +19.6 | +1.96 | +1.60 |
| Round 13 | Z.Xie | X.Lin – Z.You | Open | 10 | -15.4 | -1.54 | -3.00 |
| Round 14 | Z.Xie | X.Zhu – J.Yao | Closed | 10 | -9.6 | -0.96 | -2.70 |
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 |
|---|---|---|---|---|---|---|---|
| +10.8 | Round 8 | ZHEJIANG JINJIANG | 17 | 4♥x | ♦3 | = | +12 |
| +9.2 | Round 14 | MINGXIN GROUP | 12 | 5♠ | ♥A | -1 | +10 |
| +8.6 | Round 3 | SEOUL MIXED | 28 | 6♣ | ♠Q | -2 | +11 |
| +6.8 | Round 6 | HUBEI FUXING | 26 | 1NT | ♠Q | -4 | +7 |
| +6.8 | Round 10 | BBC THAILAND | 2 | 4♠x | ♥A | = | +7 |
| +6.6 | Round 4 | WARHORSE | 4 | 4♥ | ♠J | -1 | +13 |
| +6.0 | Round 11 | GINNAN | 13 | 4♥ | ♠2 | +1 | +11 |
| +5.6 | Round 14 | MINGXIN GROUP | 15 | 4♠ | ♥4 | -1 | -2 |
| +5.2 | Round 8 | ZHEJIANG JINJIANG | 18 | 5♦x | ♣6 | = | +3 |
| +5.2 | Round 11 | GINNAN | 14 | 5♣ | ♥8 | = | +7 |
| +5.1 | Round 11 | GINNAN | 11 | 5♥ | ♠3 | -1 | +4 |
| +5.1 | Round 11 | GINNAN | 15 | 4♠ | ♦3 | = | -1 |
| +4.4 | Round 6 | HUBEI FUXING | 23 | 4♠ | ♣4 | -1 | +6 |
| +4.2 | Round 9 | WE THE NORTH | 26 | 2♦x | ♣J | -3 | -11 |
| +4.0 | Round 8 | ZHEJIANG JINJIANG | 12 | 4♥ | ♦K | +1 | +11 |
| +3.9 | Round 13 | CANADA CHINA UNITED | 10 | 3NT | ♠7 | -2 | +8 |
| +3.8 | Round 1 | INDIA TSANGPO | 6 | 3♦ | ♣5 | = | +11 |
| +3.7 | Round 3 | SEOUL MIXED | 29 | 3♠ | ♥J | +1 | -1 |
| +3.5 | Round 3 | SEOUL MIXED | 25 | 3♦ | ♥4 | = | +0 |
| +3.5 | Round 13 | CANADA CHINA UNITED | 1 | 4♥ | ♥3 | = | +0 |
| +3.4 | Round 9 | WE THE NORTH | 29 | 1NT | ♠3 | -1 | +1 |
| +3.3 | Round 10 | BBC THAILAND | 5 | 3♦ | ♣3 | -2 | +0 |
| +3.1 | Round 10 | BBC THAILAND | 7 | 3NT | ♠J | = | +0 |
| +2.9 | Round 6 | HUBEI FUXING | 24 | 3♥ | ♣6 | -1 | +4 |
| +2.4 | Round 10 | BBC THAILAND | 6 | 3NT | ♣9 | -1 | +6 |
| +2.2 | Round 11 | GINNAN | 16 | 3♥ | ♣9 | +1 | +1 |
| +2.0 | Round 4 | WARHORSE | 6 | 2♥ | ♠7 | -2 | +3 |
| +1.7 | Round 4 | WARHORSE | 8 | 2♠ | ♦3 | -1 | +4 |
| +1.6 | Round 4 | WARHORSE | 10 | 1NT | ♠5 | +1 | +1 |
| +1.6 | Round 6 | HUBEI FUXING | 30 | 2♥ | ♣5 | = | +7 |
| +1.6 | Round 13 | CANADA CHINA UNITED | 2 | 3♠ | ♦A | -2 | -9 |
| +1.4 | Round 14 | MINGXIN GROUP | 13 | 2♠ | ♦6 | = | +0 |
| +1.3 | Round 9 | WE THE NORTH | 27 | 3♥ | ♠8 | -2 | +8 |
| +1.2 | Round 9 | WE THE NORTH | 28 | 3♥ | ♦4 | -1 | +4 |
| +1.0 | Round 8 | ZHEJIANG JINJIANG | 16 | 3♦ | ♥Q | -1 | +5 |
| +1.0 | Round 10 | BBC THAILAND | 4 | 3♠ | ♥5 | -1 | -1 |
| +1.0 | Round 10 | BBC THAILAND | 8 | 6NT | ♦3 | +1 | -11 |
| +0.9 | Round 6 | HUBEI FUXING | 22 | 2♥ | ♦Q | +1 | +0 |
| +0.8 | Round 6 | HUBEI FUXING | 25 | 3NT | ♥9 | -1 | +5 |
| +0.6 | Round 11 | GINNAN | 17 | 2♠ | ♣8 | = | -7 |
| +0.6 | Round 11 | GINNAN | 20 | 2♠ | ♠3 | +1 | +1 |
| +0.5 | Round 1 | INDIA TSANGPO | 7 | 1NT | ♥5 | +1 | +0 |
| +0.5 | Round 4 | WARHORSE | 5 | 4♠ | ♥A | = | +0 |
| +0.2 | Round 11 | GINNAN | 18 | 2♠ | ♣3 | = | +0 |
| +0.1 | Round 14 | MINGXIN GROUP | 17 | 3NT | ♥J | = | +2 |
| -0.0 | Round 8 | ZHEJIANG JINJIANG | 11 | 4♠ | ♥A | +1 | +0 |
| -0.1 | Round 1 | INDIA TSANGPO | 4 | 2♠ | ♦3 | +1 | +0 |
| -0.1 | Round 3 | SEOUL MIXED | 22 | 3NT | ♦2 | -1 | -5 |
| -0.2 | Round 13 | CANADA CHINA UNITED | 7 | 5♣ | ♥K | = | +2 |
| -0.3 | Round 3 | SEOUL MIXED | 30 | 5♥ | ♠A | = | +0 |
| -0.3 | Round 4 | WARHORSE | 1 | 4♥ | ♠K | +1 | +0 |
| -0.4 | Round 4 | WARHORSE | 9 | 1NT | ♦7 | -1 | +5 |
| -0.4 | Round 8 | ZHEJIANG JINJIANG | 19 | 3♣ | ♥K | = | -7 |
| -0.4 | Round 13 | CANADA CHINA UNITED | 6 | 2♦ | ♦3 | +2 | -7 |
| -0.5 | Round 8 | ZHEJIANG JINJIANG | 15 | 3NT | ♠3 | = | -1 |
| -0.5 | Round 10 | BBC THAILAND | 3 | 4♣ | ♥A | = | -7 |
| -0.5 | Round 14 | MINGXIN GROUP | 14 | 1NT | ♣5 | = | +1 |
| -0.6 | Round 3 | SEOUL MIXED | 24 | 5♦ | ♣4 | +1 | +1 |
| -0.6 | Round 4 | WARHORSE | 3 | 4♥ | ♠K | +2 | -11 |
| -0.8 | Round 8 | ZHEJIANG JINJIANG | 13 | 1NT | ♠6 | = | -2 |
| -0.9 | Round 13 | CANADA CHINA UNITED | 4 | 4♠ | ♣4 | -1 | +0 |
| -1.0 | Round 8 | ZHEJIANG JINJIANG | 20 | 3NT | ♥3 | -1 | -5 |
| -1.1 | Round 13 | CANADA CHINA UNITED | 9 | 3NT | ♠6 | = | +0 |
| -1.3 | Round 1 | INDIA TSANGPO | 3 | 2♥ | ♦5 | +1 | +0 |
| -1.3 | Round 6 | HUBEI FUXING | 21 | 3NT | ♦6 | -2 | +5 |
| -1.4 | Round 1 | INDIA TSANGPO | 9 | 4♥ | ♦Q | -1 | +3 |
| -1.4 | Round 10 | BBC THAILAND | 9 | Pass | +3 | ||
| -1.4 | Round 11 | GINNAN | 12 | 3NT | ♠6 | +1 | +0 |
| -1.5 | Round 14 | MINGXIN GROUP | 16 | 4♠ | ♥A | -1 | -5 |
| -1.9 | Round 9 | WE THE NORTH | 24 | 3♥ | ♥2 | -2 | -5 |
| -2.0 | Round 6 | HUBEI FUXING | 27 | 5♠ | ♥A | -1 | -8 |
| -2.2 | Round 1 | INDIA TSANGPO | 5 | 2♣ | ♣8 | +3 | -7 |
| -2.3 | Round 10 | BBC THAILAND | 10 | 3♠ | ♦3 | = | -1 |
| -2.3 | Round 14 | MINGXIN GROUP | 20 | 1NT | ♦6 | = | -6 |
| -2.6 | Round 9 | WE THE NORTH | 25 | 4♥ | ♣2 | +1 | -11 |
| -2.7 | Round 3 | SEOUL MIXED | 21 | 4♥ | ♠K | = | +1 |
| -2.7 | Round 10 | BBC THAILAND | 1 | 1NT | ♦9 | +1 | -5 |
| -3.1 | Round 1 | INDIA TSANGPO | 8 | 4♠ | ♥4 | -1 | -10 |
| -3.2 | Round 3 | SEOUL MIXED | 23 | 2♥ | ♣2 | = | +0 |
| -3.2 | Round 9 | WE THE NORTH | 22 | 5♦ | ♣A | -1 | -5 |
| -3.3 | Round 9 | WE THE NORTH | 30 | 5♠ | ♦Q | -2 | -11 |
| -3.5 | Round 14 | MINGXIN GROUP | 19 | 3♥ | ♣3 | -2 | -5 |
| -4.0 | Round 11 | GINNAN | 19 | 3NT | ♦2 | = | +0 |
| -4.1 | Round 6 | HUBEI FUXING | 28 | 4♠ | ♠A | -1 | -6 |
| -4.1 | Round 9 | WE THE NORTH | 23 | 3NT | ♥K | +1 | -14 |
| -4.2 | Round 9 | WE THE NORTH | 21 | 4♥ | ♠J | = | +0 |
| -4.3 | Round 13 | CANADA CHINA UNITED | 5 | 4♥ | ♠9 | = | -11 |
| -5.0 | Round 1 | INDIA TSANGPO | 10 | 2♥ | ♣10 | = | -6 |
| -5.2 | Round 1 | INDIA TSANGPO | 1 | 4♠ | ♥4 | = | +0 |
| -5.6 | Round 1 | INDIA TSANGPO | 2 | 1♥x | ♣A | = | -7 |
| -5.6 | Round 13 | CANADA CHINA UNITED | 3 | 3NT | ♦3 | = | +1 |
| -6.0 | Round 4 | WARHORSE | 7 | 4♠ | ♣K | -1 | -6 |
| -6.5 | Round 6 | HUBEI FUXING | 29 | 6♠ | ♦J | = | +0 |
| -7.4 | Round 4 | WARHORSE | 2 | 5♥x | ♦A | = | -10 |
| -7.7 | Round 3 | SEOUL MIXED | 27 | 4♥ | ♠3 | -1 | -8 |
| -7.9 | Round 14 | MINGXIN GROUP | 11 | 3NT | ♣9 | -1 | -10 |
| -10.2 | Round 14 | MINGXIN GROUP | 18 | 4♠ | ♠5 | -1 | -12 |
| -10.8 | Round 8 | ZHEJIANG JINJIANG | 14 | 4♥ | ♣J | -1 | -11 |
| -11.9 | Round 3 | SEOUL MIXED | 26 | 6♥ | ♠K | = | +0 |
| -11.9 | Round 13 | CANADA CHINA UNITED | 8 | 7♦ | ♠3 | -1 | -14 |