🇹🇼 CHEN Jiun-Ming · CHINESE TAIPEI
48rank
+1.6Butler · 160 bds
+0.01per board
±4.8swing
-0.61vs par /bd · #79/100
-0.11adjusted /bd
by round
vs par split: bidding -0.79 · play +0.18
Strength of schedule: opponents averaged -0.12/bd (an easy draw) → opponent-adjusted -0.11/bd
Card play — on target: opening leads 79.1% #61 of 100 · declarer play 70.0% #74 of 100 · defence 81.5% #85 of 100
| vs NT | vs a suit | |
|---|---|---|
| Opening leads | 83.3% (12) | 77.4% (31) |
| Declarer play | 50.0% (10) | 76.7% (30) |
| Defence | 73.9% (23) | 84.5% (58) |
Opening leads by suit led: ♠ 86.7% (15) · ♥ 83.3% (6) · ♦ 70.0% (10) · ♣ 75.0% (12)
vs par by strain: NT -0.82 (44) · a suit -0.53 (115)
vs par by level: part-score -1.54 (55) · game -0.03 (95) · slam -1.00 (9)
By role: declaring +0.31/bd (-2.74 vs par · 78) · defending -0.28/bd (+1.43 vs par · 82)
By vulnerability: vulnerable +0.26/bd (-1.11 vs par · 80) · not vulnerable -0.23/bd (-0.10 vs par · 80)
By round↑ top
| Round | Partner | Opponents | Room | Bds | Butler | Avg | vs par |
|---|---|---|---|---|---|---|---|
| Round 2 | H.Lin | G.Fractman – J.Sabate | Open | 16 | +13.4 | +0.84 | -2.62 |
| Round 3 | H.Lin | S.Sze – W.Chiu | Open | 16 | +22.5 | +1.41 | +0.62 |
| Round 5 | H.Lin | S.Cope – P.Crouch | Open | 16 | +54.5 | +3.41 | +3.25 |
| Round 6 | H.Lin | O.Toledano – A.Zamir | Closed | 16 | -33.3 | -2.08 | -0.06 |
| Round 8 | H.Lin | J.Robles – J.Smith | Open | 16 | -22.5 | -1.41 | +0.25 |
| Round 10 | H.Lin | S.Hult – P.Bertheau | Open | 16 | +8.8 | +0.55 | +0.88 |
| Round 12 | H.Lin | M.Fleisher – C.Martel | Open | 16 | -30.4 | -1.90 | -3.56 |
| Round 14 | H.Lin | G.Hopfenheit – S.Reim | Open | 16 | +2.7 | +0.17 | -2.12 |
| Round 15 | H.Lin | S.Sarki – Y.Mohammad | Closed | 16 | +3.5 | +0.22 | -1.38 |
| Round 17 | H.Lin | P.Mathieu – L.Soudan | Closed | 16 | -17.6 | -1.10 | -1.31 |
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 |
|---|---|---|---|---|---|---|---|
| +13.0 | Round 5 | 🏴 ENGLAND | 18 | 3NT | ♣7 | -2 | +13 |
| +12.0 | Round 3 | 🇭🇰 HONG KONG CHINA | 28 | 4♥ | ♣7 | -1 | +12 |
| +12.0 | Round 5 | 🏴 ENGLAND | 23 | 3NT | ♥4 | -1 | +13 |
| +10.4 | Round 10 | 🇸🇪 SWEDEN | 4 | 3♣ | ♦10 | +2 | +10 |
| +9.3 | Round 2 | 🇪🇸 SPAIN | 11 | 6♠ | ♣K | -2 | +9 |
| +9.3 | Round 17 | 🇬🇵 GUADELOUPE | 20 | 6♠ | ♥K | = | +1 |
| +9.1 | Round 14 | 🇩🇪 GERMANY | 3 | 4♠ | ♣A | -2 | +7 |
| +8.8 | Round 2 | 🇪🇸 SPAIN | 4 | 3NT | ♦7 | = | +10 |
| +8.3 | Round 5 | 🏴 ENGLAND | 21 | 7♥ | ♥4 | = | +0 |
| +7.9 | Round 2 | 🇪🇸 SPAIN | 16 | 4♥ | ♠8 | -2 | +5 |
| +7.6 | Round 14 | 🇩🇪 GERMANY | 15 | 6♥ | ♣K | = | +15 |
| +7.6 | Round 15 | 🇵🇰 PAKISTAN | 28 | 3NT | ♠3 | +1 | +7 |
| +6.9 | Round 3 | 🇭🇰 HONG KONG CHINA | 25 | 4♠ | ♦K | -1 | +10 |
| +6.8 | Round 2 | 🇪🇸 SPAIN | 1 | 5♦x | ♥A | -1 | +0 |
| +6.3 | Round 5 | 🏴 ENGLAND | 26 | 3♥ | ♦7 | +1 | +10 |
| +6.2 | Round 10 | 🇸🇪 SWEDEN | 7 | 4♥x | ♦6 | -1 | +8 |
| +6.1 | Round 3 | 🇭🇰 HONG KONG CHINA | 18 | 3NT | ♦2 | = | -11 |
| +6.1 | Round 15 | 🇵🇰 PAKISTAN | 23 | 5♥x | ♠A | -2 | +12 |
| +5.8 | Round 3 | 🇭🇰 HONG KONG CHINA | 32 | 2♥x | ♠3 | -4 | +5 |
| +5.6 | Round 10 | 🇸🇪 SWEDEN | 10 | 3NT | ♦4 | -2 | +8 |
| +5.2 | Round 12 | 🇺🇸 U.S.A. | 9 | 3NT | ♥3 | +1 | +0 |
| +4.5 | Round 3 | 🇭🇰 HONG KONG CHINA | 26 | 4♥ | ♠K | = | +10 |
| +4.5 | Round 8 | 🇨🇱 CHILE | 3 | 6♦x | ♠A | -2 | +7 |
| +4.4 | Round 15 | 🇵🇰 PAKISTAN | 30 | 2♠ | ♣4 | +1 | +6 |
| +4.2 | Round 2 | 🇪🇸 SPAIN | 10 | 3♠ | ♦2 | +1 | +1 |
| +4.2 | Round 3 | 🇭🇰 HONG KONG CHINA | 23 | 4♥ | ♠2 | = | -1 |
| +4.1 | Round 15 | 🇵🇰 PAKISTAN | 27 | 3NT | ♦10 | = | +6 |
| +3.9 | Round 5 | 🏴 ENGLAND | 28 | 2♠ | ♦K | -2 | +3 |
| +3.9 | Round 10 | 🇸🇪 SWEDEN | 3 | 5♣x | ♠K | -2 | -5 |
| +3.7 | Round 5 | 🏴 ENGLAND | 22 | 5♥ | ♦K | = | +8 |
| +3.6 | Round 14 | 🇩🇪 GERMANY | 1 | 3♦ | ♥8 | +1 | +0 |
| +3.6 | Round 14 | 🇩🇪 GERMANY | 8 | 3NT | ♥5 | +1 | -11 |
| +3.5 | Round 14 | 🇩🇪 GERMANY | 2 | 3NT | ♠8 | = | +0 |
| +3.5 | Round 17 | 🇬🇵 GUADELOUPE | 32 | 2♠ | ♠2 | -1 | +6 |
| +3.3 | Round 14 | 🇩🇪 GERMANY | 12 | 4♥ | ♣A | -1 | +4 |
| +3.2 | Round 6 | 🇮🇱 ISRAEL | 11 | 4♠x | ♣K | = | +7 |
| +3.2 | Round 8 | 🇨🇱 CHILE | 1 | 3♥ | ♥6 | = | +0 |
| +3.0 | Round 2 | 🇪🇸 SPAIN | 6 | 4♥ | ♣K | = | -11 |
| +3.0 | Round 5 | 🏴 ENGLAND | 29 | 3♣ | ♦A | = | +0 |
| +2.7 | Round 2 | 🇪🇸 SPAIN | 12 | 4♥ | ♦K | = | +3 |
| +2.7 | Round 5 | 🏴 ENGLAND | 30 | 4♠ | ♦K | +1 | +11 |
| +2.5 | Round 10 | 🇸🇪 SWEDEN | 9 | 3♦ | ♠10 | = | -1 |
| +2.5 | Round 10 | 🇸🇪 SWEDEN | 14 | 5♠ | ♥A | -1 | +8 |
| +2.4 | Round 8 | 🇨🇱 CHILE | 16 | 4♠ | ♣3 | = | +0 |
| +2.3 | Round 5 | 🏴 ENGLAND | 17 | 3♥ | ♠K | = | +7 |
| +2.2 | Round 14 | 🇩🇪 GERMANY | 16 | 3NT | ♥7 | +3 | -10 |
| +2.0 | Round 5 | 🏴 ENGLAND | 27 | 1NT | ♦3 | -1 | +4 |
| +1.7 | Round 15 | 🇵🇰 PAKISTAN | 21 | 3NT | ♣A | -3 | +10 |
| +1.5 | Round 6 | 🇮🇱 ISRAEL | 1 | 5♣ | ♠A | -1 | +10 |
| +1.5 | Round 17 | 🇬🇵 GUADELOUPE | 24 | 3♥ | ♠4 | -2 | +0 |
| +1.4 | Round 12 | 🇺🇸 U.S.A. | 1 | 4♥ | ♣5 | -1 | +5 |
| +1.0 | Round 8 | 🇨🇱 CHILE | 4 | 3NT | ♣Q | -1 | +12 |
| +1.0 | Round 8 | 🇨🇱 CHILE | 8 | 2♦ | ♠Q | +1 | +0 |
| +0.9 | Round 2 | 🇪🇸 SPAIN | 15 | 4♥ | ♠2 | +2 | -13 |
| +0.9 | Round 6 | 🇮🇱 ISRAEL | 15 | 3NT | ♣6 | +1 | +0 |
| +0.9 | Round 17 | 🇬🇵 GUADELOUPE | 21 | 4♥ | ♣7 | -1 | +11 |
| +0.8 | Round 3 | 🇭🇰 HONG KONG CHINA | 17 | 4♠ | ♦5 | +1 | +11 |
| +0.8 | Round 15 | 🇵🇰 PAKISTAN | 29 | 4NT | ♥4 | -1 | +6 |
| +0.8 | Round 17 | 🇬🇵 GUADELOUPE | 19 | 3♠ | ♦6 | -1 | +2 |
| +0.7 | Round 5 | 🏴 ENGLAND | 25 | 3NT | ♣J | = | -1 |
| +0.7 | Round 6 | 🇮🇱 ISRAEL | 9 | 3♥ | ♦K | +1 | +2 |
| +0.6 | Round 17 | 🇬🇵 GUADELOUPE | 25 | 3NT | ♥Q | = | -1 |
| +0.5 | Round 8 | 🇨🇱 CHILE | 6 | 4♠ | ♠4 | +2 | +11 |
| +0.5 | Round 12 | 🇺🇸 U.S.A. | 10 | 1NT | ♠4 | -1 | +0 |
| +0.4 | Round 10 | 🇸🇪 SWEDEN | 13 | 3NT | ♥4 | +2 | +0 |
| +0.4 | Round 17 | 🇬🇵 GUADELOUPE | 23 | 3♠ | ♥A | = | -10 |
| +0.3 | Round 14 | 🇩🇪 GERMANY | 13 | 4♥ | ♠5 | = | -1 |
| +0.3 | Round 15 | 🇵🇰 PAKISTAN | 19 | 2♥ | ♦10 | +1 | +0 |
| +0.3 | Round 15 | 🇵🇰 PAKISTAN | 24 | 3♦ | ♣A | -1 | -3 |
| +0.2 | Round 6 | 🇮🇱 ISRAEL | 5 | 4♥ | ♦6 | -1 | +6 |
| +0.2 | Round 6 | 🇮🇱 ISRAEL | 8 | 2NT | ♣4 | = | +0 |
| +0.2 | Round 10 | 🇸🇪 SWEDEN | 15 | 3NT | ♠2 | = | -1 |
| +0.2 | Round 12 | 🇺🇸 U.S.A. | 11 | 4♠ | ♥2 | = | +1 |
| +0.1 | Round 3 | 🇭🇰 HONG KONG CHINA | 31 | 4♠ | ♦Q | = | -1 |
| +0.1 | Round 5 | 🏴 ENGLAND | 31 | 3♠ | ♦9 | = | +0 |
| +0.1 | Round 6 | 🇮🇱 ISRAEL | 7 | 4♠ | ♣A | +1 | +0 |
| +0.1 | Round 8 | 🇨🇱 CHILE | 13 | 2NT | ♠2 | = | +10 |
| +0.0 | Round 2 | 🇪🇸 SPAIN | 3 | 4♥ | ♠K | +1 | +4 |
| -0.0 | Round 8 | 🇨🇱 CHILE | 10 | 4♥ | ♦4 | = | +9 |
| -0.1 | Round 10 | 🇸🇪 SWEDEN | 6 | 2♠ | ♣4 | -1 | +1 |
| -0.1 | Round 14 | 🇩🇪 GERMANY | 7 | 3NT | ♦6 | +2 | +0 |
| -0.1 | Round 15 | 🇵🇰 PAKISTAN | 31 | 4♥ | ♣5 | +1 | +0 |
| -0.1 | Round 15 | 🇵🇰 PAKISTAN | 32 | 3NT | ♥2 | = | -13 |
| -0.3 | Round 3 | 🇭🇰 HONG KONG CHINA | 27 | 4♥ | ♣5 | +1 | +0 |
| -0.3 | Round 5 | 🏴 ENGLAND | 32 | 3♣ | ♠J | -5 | -9 |
| -0.3 | Round 10 | 🇸🇪 SWEDEN | 12 | 4♠ | ♣J | +1 | +0 |
| -0.4 | Round 8 | 🇨🇱 CHILE | 7 | 1NT | ♠6 | = | -11 |
| -0.5 | Round 3 | 🇭🇰 HONG KONG CHINA | 20 | 3♦ | ♥4 | = | +1 |
| -0.6 | Round 10 | 🇸🇪 SWEDEN | 16 | 1NT | ♠Q | +2 | -8 |
| -0.7 | Round 5 | 🏴 ENGLAND | 24 | 3♥ | ♦3 | +1 | -1 |
| -0.7 | Round 8 | 🇨🇱 CHILE | 5 | 3NT | ♥Q | +2 | -10 |
| -0.7 | Round 12 | 🇺🇸 U.S.A. | 7 | 2♠ | ♥K | -1 | +0 |
| -0.7 | Round 12 | 🇺🇸 U.S.A. | 15 | 4♥ | ♠K | +1 | +0 |
| -0.7 | Round 14 | 🇩🇪 GERMANY | 4 | 3♦ | ♠10 | +2 | -10 |
| -0.7 | Round 17 | 🇬🇵 GUADELOUPE | 27 | 4♥ | ♦A | +1 | +0 |
| -0.8 | Round 6 | 🇮🇱 ISRAEL | 4 | 4♠ | ♥Q | -1 | -6 |
| -0.8 | Round 15 | 🇵🇰 PAKISTAN | 22 | 3NT | ♠6 | -2 | -12 |
| -0.8 | Round 17 | 🇬🇵 GUADELOUPE | 17 | 3NT | ♠2 | +1 | +0 |
| -0.9 | Round 8 | 🇨🇱 CHILE | 11 | 4♠ | ♠J | = | +0 |
| -0.9 | Round 12 | 🇺🇸 U.S.A. | 6 | 4♥ | ♠A | +1 | -6 |
| -0.9 | Round 12 | 🇺🇸 U.S.A. | 8 | 3♥ | ♣10 | = | -7 |
| -0.9 | Round 14 | 🇩🇪 GERMANY | 14 | 4♠ | ♣5 | +2 | -1 |
| -1.0 | Round 3 | 🇭🇰 HONG KONG CHINA | 30 | 4♠ | ♥K | +1 | -1 |
| -1.1 | Round 5 | 🏴 ENGLAND | 20 | 2♦ | ♥6 | -1 | -6 |
| -1.1 | Round 6 | 🇮🇱 ISRAEL | 12 | 4♥ | ♥4 | = | +1 |
| -1.1 | Round 10 | 🇸🇪 SWEDEN | 11 | 2♠ | ♣Q | -1 | +2 |
| -1.1 | Round 14 | 🇩🇪 GERMANY | 9 | 1NT | ♥2 | -1 | +2 |
| -1.1 | Round 14 | 🇩🇪 GERMANY | 10 | 3NT | ♦2 | +1 | +0 |
| -1.3 | Round 3 | 🇭🇰 HONG KONG CHINA | 29 | 4♠ | ♥10 | +1 | +0 |
| -1.3 | Round 12 | 🇺🇸 U.S.A. | 12 | 4♠ | ♣A | +1 | +0 |
| -1.4 | Round 5 | 🏴 ENGLAND | 19 | 4♥ | ♣A | = | +0 |
| -1.4 | Round 17 | 🇬🇵 GUADELOUPE | 29 | 1NT | ♦K | -1 | -1 |
| -1.5 | Round 2 | 🇪🇸 SPAIN | 13 | 4♥ | ♠Q | = | +0 |
| -1.5 | Round 6 | 🇮🇱 ISRAEL | 3 | 3NT | ♠2 | +3 | +11 |
| -1.5 | Round 6 | 🇮🇱 ISRAEL | 13 | 3NT | ♠2 | = | -2 |
| -1.6 | Round 2 | 🇪🇸 SPAIN | 14 | 4♠ | ♣3 | = | +0 |
| -1.6 | Round 3 | 🇭🇰 HONG KONG CHINA | 24 | 3NT | ♠6 | = | +1 |
| -1.7 | Round 12 | 🇺🇸 U.S.A. | 5 | 6♥ | ♠5 | = | +0 |
| -1.9 | Round 10 | 🇸🇪 SWEDEN | 8 | 3♦ | ♣Q | -1 | +2 |
| -2.0 | Round 12 | 🇺🇸 U.S.A. | 13 | 3NT | ♠6 | -1 | -16 |
| -2.1 | Round 12 | 🇺🇸 U.S.A. | 3 | 3♠ | ♣4 | = | +0 |
| -2.2 | Round 6 | 🇮🇱 ISRAEL | 2 | 3♥ | ♦A | +1 | -2 |
| -2.3 | Round 10 | 🇸🇪 SWEDEN | 2 | 4♣ | ♥A | = | +0 |
| -2.4 | Round 3 | 🇭🇰 HONG KONG CHINA | 19 | 3♥ | ♥5 | +2 | -10 |
| -2.4 | Round 6 | 🇮🇱 ISRAEL | 6 | 1NT | ♠3 | +2 | +0 |
| -2.7 | Round 6 | 🇮🇱 ISRAEL | 16 | 4♥ | ♦6 | = | +1 |
| -2.7 | Round 17 | 🇬🇵 GUADELOUPE | 26 | 4♥ | ♠3 | = | -9 |
| -3.1 | Round 17 | 🇬🇵 GUADELOUPE | 30 | 3NT | ♠2 | = | +1 |
| -3.3 | Round 2 | 🇪🇸 SPAIN | 9 | 5♣ | ♠K | +1 | -11 |
| -3.4 | Round 15 | 🇵🇰 PAKISTAN | 26 | 3♠ | ♦Q | -2 | -8 |
| -3.5 | Round 15 | 🇵🇰 PAKISTAN | 20 | 2NT | ♦K | -1 | -5 |
| -3.6 | Round 2 | 🇪🇸 SPAIN | 5 | 4♠ | ♥J | +2 | -17 |
| -4.1 | Round 15 | 🇵🇰 PAKISTAN | 18 | 2♥ | ♥10 | -3 | -7 |
| -4.1 | Round 15 | 🇵🇰 PAKISTAN | 25 | 3NT | ♥3 | = | -13 |
| -4.2 | Round 8 | 🇨🇱 CHILE | 9 | 4♣ | ♥K | = | -6 |
| -4.3 | Round 8 | 🇨🇱 CHILE | 2 | 2♠ | ♥2 | = | -6 |
| -4.5 | Round 17 | 🇬🇵 GUADELOUPE | 31 | 4♠ | ♦J | -3 | -9 |
| -5.1 | Round 2 | 🇪🇸 SPAIN | 7 | 2♠ | ♦A | -1 | +0 |
| -5.1 | Round 3 | 🇭🇰 HONG KONG CHINA | 22 | 3NT | ♦7 | -1 | -12 |
| -5.1 | Round 8 | 🇨🇱 CHILE | 14 | 4♠ | ♥6 | = | +0 |
| -5.3 | Round 12 | 🇺🇸 U.S.A. | 2 | 3♠ | ♥7 | +2 | -6 |
| -5.5 | Round 14 | 🇩🇪 GERMANY | 5 | 4♥x | ♥A | -1 | -13 |
| -5.7 | Round 3 | 🇭🇰 HONG KONG CHINA | 21 | 4♥ | ♣J | +1 | -4 |
| -5.7 | Round 12 | 🇺🇸 U.S.A. | 4 | 5♦ | ♥Q | -1 | -16 |
| -5.7 | Round 15 | 🇵🇰 PAKISTAN | 17 | 5♥x | ♣K | = | -8 |
| -5.7 | Round 17 | 🇬🇵 GUADELOUPE | 28 | 3♣ | ♦Q | = | -5 |
| -6.2 | Round 17 | 🇬🇵 GUADELOUPE | 22 | 4♠ | ♠6 | = | +0 |
| -6.3 | Round 12 | 🇺🇸 U.S.A. | 14 | 4♠x | ♥3 | -1 | +0 |
| -7.1 | Round 10 | 🇸🇪 SWEDEN | 1 | 4♣x | ♥7 | -3 | -2 |
| -7.2 | Round 2 | 🇪🇸 SPAIN | 2 | 2♠ | ♣3 | -1 | -12 |
| -7.8 | Round 14 | 🇩🇪 GERMANY | 11 | 3♦ | ♣A | +3 | -16 |
| -7.9 | Round 2 | 🇪🇸 SPAIN | 8 | 4♠x | ♣5 | = | -10 |
| -8.7 | Round 8 | 🇨🇱 CHILE | 15 | 3NT | ♥7 | +1 | -1 |
| -9.5 | Round 10 | 🇸🇪 SWEDEN | 5 | 4♥x | ♠2 | -3 | -8 |
| -9.5 | Round 17 | 🇬🇵 GUADELOUPE | 18 | 3♠ | ♥2 | -2 | -7 |
| -10.1 | Round 12 | 🇺🇸 U.S.A. | 16 | 6♥x | ♠A | = | -12 |
| -10.9 | Round 8 | 🇨🇱 CHILE | 12 | 3NT | ♥7 | = | -11 |
| -11.5 | Round 6 | 🇮🇱 ISRAEL | 10 | 6♠ | ♦3 | -1 | -13 |
| -13.3 | Round 14 | 🇩🇪 GERMANY | 6 | Adj. | ♣6 | +0 | |
| -16.4 | Round 6 | 🇮🇱 ISRAEL | 14 | 6♥x | ♦A | = | -16 |