Declarer leaderboard — four facets, 2023 World Championships

Every declarer with ≥40 boards in each division, ranked by F4 — trick-taking scored in IMPs against the field in the identical contract on the same deal. The lighter facets show the same skill through different lenses; ranking uses the stakes-weighted one.

Source Marrakech 2023 · RR + KO · peers = other tables in the same strain+level+side on that deal · leave-one-out

F1 · tricks vs DD

Actual tricks − double-dummy. The single-reference measure — useful, but DD is one fixed yardstick, not the field.

F2 · tricks vs field

Actual tricks − average taken by other declarers in the same contract on the deal. Pure card-play in tricks.

F3 · making vs field

Did you make it − the field's make-rate for that contract on the deal. Positive = brings home contracts peers fail.

F4 · IMPs vs field

The ranking. F2's trick edge scored in IMPs — a trick that swings a game counts for what it's worth. Field-relative and stakes-aware.

Peer matching

Default compares only tables where the same seat declared (2♥-E vs 2♥-E) — same hand concealed, same opening leader. Toggle to either seat (the looser side match) to see the difference. F1 doesn't depend on this.

Worked example — every board KLUKOWSKI Michal declared (Open), all four facets

KLUKOWSKI declared 102 boards; 95 had another table in the identical contract from the same seat (the default matching, needed for F2–F4). Each facet in the leaderboard row is the per-board average of the column below — nothing modelled, every board scored from the actual result and the field on that exact deal.

F1 = tricks − DD  ·  F2 = tricks − mean(peer tricks)  ·  F3 = made? − field make-rate  ·  F4 = IMP( your score − mean(peers' tricks re-scored in your contract) )

The biggest single board — QF board 26, 6D EW by KLUKOWSKI

Took 12 tricks (double-dummy 12); 1 other tables were in 6D here, averaging 11.0 tricks with 0% making it.
F1 = 12 − 12 = +0  (tricks vs double-dummy)
F2 = 12 − 11.0 = +1.00  (tricks vs the same-contract field)
F3 = made (1) − 0.00 = +1.00
F4 = IMP( your +1370 − field −100 ) = +16  (the trick difference, scored in IMPs)
Full ledger — all 102 declared boards
F1 · DDF2 · tricks vs fieldF3 · making vs fieldF4 · IMPs vs field
Boardcontracttrk/DD= F1#prpeer trk= F2fld makemade?= F3your $fld $= F4
QF b81NT EW9/8+138.7+0.33100%yes+0.00+150+140+0
QF b126S EW11/11+0210.5+0.500%no+0.00−50−75+1
QF b216H EW12/12+0512.2−0.20100%yes+0.00+980+986+0
QF b312C EW7/7+027.0+0.000%no+0.00−50−50+0
QF b62H NS9/9+068.7+0.33100%yes+0.00+140+130+0
QF b114S NS7/6+157.8−0.800%no+0.00−150−110−1
QF b133NT NS6/6+00···no····
QF b142S NS8/8+018.0+0.00100%yes+0.00+110+110+0
QF b154H NS10/10+0210.0+0.00100%yes+0.00+620+620+0
QF b174S EW11/12−1210.5+0.50100%yes+0.00+450+435+0
QF b203NT EW11/8+3211.0+0.00100%yes+0.00+660+660+0
QF b215H EW11/11+0111.0+0.00100%yes+0.00+450+450+0
QF b223S EW8/8+028.0+0.000%no+0.00−100−100+0
QF b235D EW9/10−119.0+0.000%no+0.00−200−200+0
QF b263S EW9/9+029.0+0.00100%yes+0.00+140+140+0
QF b273NT EW11/11+049.3+1.7575%yes+0.25+460+293+4
QF b281NT EW6/5+10···no····
QF b304S EW9/9+069.0+0.000%no+0.00−50−50+0
QF b324S EW9/9+049.0+0.000%no+0.00−100−100+0
QF b63C EW9/8+157.2+1.800%yes+1.00+110−180+7
QF b76H EW12/12+0511.8+0.2080%yes+0.20+1430+1124+7
QF b143Dx× EW6/5+145.0+1.000%no+0.00−500−800+7
QF b186D EW12/12+0212.5−0.50100%yes+0.00+920+930+0
QF b266D EW12/12+0111.0+1.000%yes+1.00+1370−100+16
QF b276H EW12/12+0112.0+0.00100%yes+0.00+980+980+0
QF b322NT EW8/6+217.0+1.000%yes+1.00+120−100+6
RR-r1 b15C EW11/10+1310.3+0.6733%yes+0.67+400+100+7
RR-r1 b24S EW10/10+0179.3+0.7141%yes+0.59+420+138+7
RR-r1 b32S EW6/7−185.9+0.120%no+0.00−200−212+0
RR-r1 b163NT EW11/11+0611.0+0.00100%yes+0.00+660+660+0
RR-r11 b33NT EW10/10+01710.1−0.12100%yes+0.00+630+634+0
RR-r11 b156S EW12/12+0912.2−0.22100%yes+0.00+980+987+0
RR-r12 b181NT EW7/7+037.0+0.00100%yes+0.00+90+90+0
RR-r12 b206Cx× EW11/11+0711.1−0.1414%no−0.14−200+49−6
RR-r12 b214S EW11/10+11210.4+0.58100%yes+0.00+450+433+0
RR-r13 b34NT EW12/12+0112.0+0.00100%yes+0.00+690+690+0
RR-r13 b43NT EW9/9+0229.0+0.00100%yes+0.00+600+600+0
RR-r13 b123NT EW11/10+11510.4+0.60100%yes+0.00+460+442+0
RR-r13 b156Dx× EW12/12+0712.0+0.00100%yes+0.00+1090+1090+0
RR-r14 b182NT EW6/6+096.9−0.8922%no−0.22−100−29−2
RR-r14 b224H EW11/9+2610.0+1.0067%yes+0.33+650+390+6
RR-r14 b233NT EW10/9+1148.6+1.4343%yes+0.57+630+199+10
RR-r14 b244H EW8/8+077.0+1.000%no+0.00−100−150+2
RR-r14 b264H EW9/9+0109.0+0.000%no+0.00−100−100+0
RR-r14 b272H EW7/7+017.0+0.000%no+0.00−50−50+0
RR-r14 b314S EW10/9+179.0+1.000%yes+1.00+420−50+10
RR-r16 b176D EW12/12+0512.0+0.00100%yes+0.00+920+920+0
RR-r16 b244S EW9/9+029.0+0.000%no+0.00−50−50+0
RR-r16 b306H EW12/12+01111.6+0.4536%yes+0.64+980+330+12
RR-r17 b73S EW7/7+037.7−0.670%no+0.00−200−133−2
RR-r17 b82H EW8/9−198.3−0.33100%yes+0.00+110+120+0
RR-r18 b204S EW12/11+12211.8+0.23100%yes+0.00+680+673+0
RR-r18 b212Cx× EW5/5+055.0+0.000%no+0.00−500−500+0
RR-r18 b232NT EW7/7+036.3+0.670%no+0.00−100−167+2
RR-r18 b264H EW11/11+01210.6+0.42100%yes+0.00+650+638+0
RR-r18 b275C EW10/10+0110.0+0.000%no+0.00−50−50+0
RR-r18 b283NT EW12/11+1219.7+2.2986%yes+0.14+490+361+3
RR-r18 b313NT EW9/10−1239.8−0.78100%yes+0.00+400+423−1
RR-r19 b12S NS11/10+1210.0+1.00100%yes+0.00+200+170+1
RR-r19 b33NT NS10/9+1197.6+2.3742%yes+0.58+430+95+8
RR-r19 b53D NS11/9+20···yes····
RR-r2 b254H EW11/11+01911.0+0.00100%yes+0.00+650+650+0
RR-r2 b293NT EW10/10+0129.7+0.33100%yes+0.00+630+620+0
RR-r2 b314NT EW10/10+00···yes····
RR-r20 b62Sx× EW9/8+118.0+1.00100%yes+0.00+870+670+5
RR-r20 b94S EW10/10+01910.2−0.21100%yes+0.00+620+626+0
RR-r20 b113D EW9/9+00···yes····
RR-r20 b145C EW11/11+01111.0+0.00100%yes+0.00+400+400+0
RR-r21 b185D EW10/11−1310.3−0.3333%no−0.33−50+100−4
RR-r21 b223NT EW9/9+079.1−0.14100%yes+0.00+600+604+0
RR-r21 b243NT EW8/8+078.4−0.4343%no−0.43−50+137−5
RR-r21 b255C EW11/11+01110.4+0.5545%yes+0.55+600+218+9
RR-r21 b314S EW10/11−11310.6−0.62100%yes+0.00+420+438+0
RR-r21 b323NT EW10/9+1139.8+0.2392%yes+0.08+630+572+2
RR-r22 b24H EW12/12+00···yes····
RR-r22 b44H EW10/11−1910.7−0.67100%yes+0.00+620+640−1
RR-r22 b96H EW12/13−1812.3−0.25100%yes+0.00+1430+1438+0
RR-r22 b165Hx× EW10/10+0910.0+0.000%no+0.00−200−200+0
RR-r23 b225D NS11/11+0111.0+0.00100%yes+0.00+400+400+0
RR-r23 b271NT NS3/4−1143.9−0.860%no+0.00−200−157−1
RR-r23 b303NT NS9/9+049.3−0.25100%yes+0.00+400+408+0
RR-r23 b314H NS11/9+21411.1−0.07100%yes+0.00+650+652+0
RR-r23 b323S NS9/10−169.2−0.17100%yes+0.00+140+145+0
RR-r5 b14H EW12/12+01211.2+0.83100%yes+0.00+480+455+1
RR-r5 b74H EW10/11−11410.7−0.71100%yes+0.00+620+641−1
RR-r5 b123NT EW10/9+1109.5+0.5080%yes+0.20+430+329+3
RR-r5 b165H EW12/12+0712.0+0.00100%yes+0.00+680+680+0
RR-r6 b202S EW6/5+1105.7+0.300%no+0.00−200−230+1
RR-r6 b284H EW10/10+01810.0+0.0094%yes+0.06+420+396+1
RR-r6 b292H EW9/8+138.7+0.33100%yes+0.00+140+130+0
RR-r6 b303NT EW10/10+0159.9+0.07100%yes+0.00+430+428+0
RR-r7 b24H EW12/13−11112.4−0.45100%yes+0.00+480+494+0
RR-r7 b31NT EW5/6−126.0−1.000%no+0.00−200−100−3
RR-r7 b44S EW10/11−11910.5−0.53100%yes+0.00+620+636+0
RR-r7 b65Dx× EW10/10+0410.0+0.000%no+0.00−200−200+0
RR-r7 b133NT EW11/8+3189.4+1.5689%yes+0.11+660+531+3
RR-r8 b206S NS12/12+0312.7−0.67100%yes+0.00+1430+1450−1
RR-r8 b253H NS8/8+088.0+0.000%no+0.00−50−50+0
RR-r8 b272H NS7/7+00···no····
RR-r9 b33S EW7/7+037.0+0.000%no+0.00−200−200+0
RR-r9 b61NT EW7/7+087.1−0.1388%yes+0.12+90+74+0
RR-r9 b154H EW10/10+01410.1−0.0786%yes+0.14+420+359+2
Reconciliation — every figure matches KLUKOWSKI's row in the Open table.
F1: Σ +18 ÷ 102 = +0.18   F2: Σ 16.4 ÷ 95 = +0.17
F3: Σ 8.1 ÷ 95 = +0.09   F4: Σ +115 IMP ÷ 95 = +1.21
F1/F2 are trick-count facets; F4 restores stakes by scoring the same-contract trick difference in IMPs — a player can be flat on F1/F2 yet stand out on F4.

Why four. F1 leans on double-dummy; F2–F4 lean on the field, which is the fairer bar. F2/F3 are in natural units (tricks, make-rate) and ignore stakes; F4 restores stakes by scoring the same-contract trick difference in IMPs. A player can be flat on F1/F2 yet high on F4 if their tricks land on the boards that matter. Declaring only; defence and bidding are separate. Everything is vs the full division field, so a positive number means better than a typical table at the championship.