🔎 WchessGrade 4Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision
The Mystery of the Missing Golden Knight
Someone swapped the famous Golden Knight trophy with a plastic fake right before the finals! Detective, review the clues to unmask the culprit.
Suspects
Possible suspects
Cross off a row as each clue rules it out. On screen, tap a row.
21 of 21 still in play
| Name | Opening Move | Endgame Strategy | Watch Hand | Cap Color | Distraction |
|---|---|---|---|---|---|
| Alireza Firouzja | Bishop Pin | Passed Pawn | Left Handed | White Cap | Loud Snacking |
| Ding Liren | Bishop Pin | Pawn Promotion | Left Handed | Black Cap | Flash Camera |
| Irina Krush | Sicilian Defense | Pawn Promotion | Left Handed | Red Cap | Board Flip |
| Daniel Naroditsky | Sicilian Defense | Zugzwang Trap | Right Handed | White Cap | Loud Snacking |
| Maxime Vachier | Rook Lift | Zugzwang Trap | Right Handed | Red Cap | Loud Snacking |
| Susan Polgar | Queen Gambit | King Safety | Left Handed | White Cap | Loud Snacking |
| Anish Giri | Sicilian Defense | King Safety | Left Handed | Red Cap | Board Flip |
| Anna Muzychuk | Bishop Pin | King Safety | Right Handed | White Cap | Board Flip |
| Garry Kasparov | Rook Lift | Pawn Promotion | Left Handed | White Cap | Loud Snacking |
| Vishy Anand | Queen Gambit | King Safety | Left Handed | White Cap | Flash Camera |
| Fabiano Caruana | Queen Gambit | Passed Pawn | Right Handed | Red Cap | Board Flip |
| Alexandra Botez | Queen Gambit | Pawn Promotion | Left Handed | Black Cap | Loud Snacking |
| Eric Hansen | Rook Lift | Pawn Promotion | Left Handed | Black Cap | Loud Snacking |
| Jennifer Shahade | Rook Lift | Pawn Promotion | Left Handed | Black Cap | Board Flip |
| Jan Nepomniachtchi | Queen Gambit | Smothered Mate | Left Handed | White Cap | Loud Snacking |
| Levon Aronian | Rook Lift | Zugzwang Trap | Right Handed | Red Cap | Board Flip |
| Praggnanandhaa | Queen Gambit | Passed Pawn | Left Handed | Black Cap | Flash Camera |
| Magnus Carlsen | Sicilian Defense | Zugzwang Trap | Right Handed | White Cap | Board Flip |
| Gukesh D | Queen Gambit | Zugzwang Trap | Left Handed | White Cap | Loud Snacking |
| Hou Yifan | Knight Fork | Pawn Promotion | Left Handed | White Cap | Flash Camera |
| Wesley So | Sicilian Defense | Zugzwang Trap | Left Handed | White Cap | Flash Camera |
Clue 1
Multiplication facts (1-12)
The arbiter counted chess boards set up in identical square rows across the hall.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
14
27
121
144
42
121
1
72
45
64
22
63
110
36
7
T
14
30
10
121
144
42
10
T
14
22
144
121
144
70
10
T
14
27
121
36
121
30
70
1
T
14
121
2 × 7 =T
7 × 9 =L
8 × 8 =C
11 × 11 =E
1 × 10 =O
6 × 6 =R
7 × 6 =N
3 × 9 =H
7 × 10 =M
11 × 2 =U
7 × 1 =I
8 × 9 =K
10 × 11 =P
3 × 10 =D
1 × 1 =A
12 × 12 =S
9 × 5 =Y
0/17 letters found
Clue 2
Rounding
The digital tournament clock only displays time rounded to the nearest ten seconds.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
W
20
30
90
130
9000
1100
1100
1100
2300
W
20
7000
9000
1300
90
290
2300
130
700
9000
700
3700
7000
2300
370
70
130
90
290
9000
300
70
2300
4300
700
Round 23 to the nearest tenW
Round 291 to the nearest tenH
Round 9,172 to the nearest thousandE
Round 1,274 to the nearest hundredF
Round 30 to the nearest tenI
Round 6,590 to the nearest thousandL
Round 88 to the nearest tenT
Round 4,261 to the nearest hundredR
Round 1,059 to the nearest hundredS
Round 132 to the nearest tenN
Round 2,295 to the nearest hundredA
Round 251 to the nearest hundredB
Round 746 to the nearest hundredD
Round 74 to the nearest tenO
Round 370 to the nearest tenY
Round 3,712 to the nearest hundredP
0/16 letters found
Clue 3
Addition
We tallied up all the stolen pawn pieces found in two hidden bags.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
5938
9684
6989
5578
7257
5061
5061
6001
7257
2946
3007
6001
2946
7257
2716
5758
6989
9081
4853
2057
6093
5431
5061
6093
5572
9081
9568
2946
6001
2716
5758
7257
2946
4275
2823 + 3115 =T
684 + 1373 =R
2459 + 2602 =L
4289 + 2968 =I
3451 + 2121 =U
2124 + 3454 =V
4263 + 4818 =D
3735 + 2358 =O
933 + 2074 =P
2108 + 2167 =G
2859 + 1994 =F
3595 + 2163 =K
4929 + 4755 =H
1145 + 1571 =C
2146 + 4843 =E
2734 + 2697 =M
6036 + 3532 =S
1345 + 1601 =N
3088 + 2913 =A
0/19 letters found
Clue 4
Subtraction
We compared the total score points before and after the stolen knight went missing.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
4958
7686
5856
5584
2179
5856
3364
1625
4367
5374
2860
6932
6932
5856
4367
3364
4933
7686
5237
T
4958
5856
5564
3364
6932
2860
2179
T
4958
7686
5856
5564
7686
3364
5237
5374
8582 - 3624 =T
6543 - 979 =C
8067 - 3134 =W
9149 - 1463 =H
3874 - 1014 =O
9261 - 3887 =R
1889 - 264 =K
8807 - 2951 =E
9022 - 2090 =P
6119 - 535 =S
7154 - 2787 =D
4417 - 1053 =A
4199 - 2020 =N
9232 - 3995 =I
0/14 letters found
Clue 5
Division facts (1-12) — the last clue
The referee split the remaining tournament chess sets equally among the tables.
First solve each problem. Then find each answer in the list below and cross that sentence out. One sentence will be left — that's exactly what the villain did!
Step 1 — solve these
49 ÷ 7 = ?
8 ÷ 2 = ?
33 ÷ 11 = ?
24 ÷ 4 = ?
24 ÷ 12 = ?
99 ÷ 9 = ?
88 ÷ 11 = ?
50 ÷ 5 = ?
55 ÷ 11 = ?
4 ÷ 4 = ?
132 ÷ 11 = ?
Step 2 — cross out the sentence with each answer
1.The villain set up a bishop pin, then checked king safety.
2.The villain set up a bishop pin, then rushed a pawn promotion.
3.The villain opened with the queen gambit, then created a zugzwang trap.
4.The villain opened with the queen gambit, then checked king safety.
5.The villain played the sicilian defense, then trapped with a smothered mate.
6.The villain executed a knight fork, then trapped with a smothered mate.
7.The villain set up a bishop pin, then pushed a passed pawn.
8.The villain executed a knight fork, then rushed a pawn promotion.
9.The villain launched a rook lift, then rushed a pawn promotion.
10.The villain opened with the queen gambit, then pushed a passed pawn.
11.The villain played the sicilian defense, then pushed a passed pawn.
12.The villain set up a bishop pin, then created a zugzwang trap.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Missing Golden Knight
Culprit: Garry Kasparov (Rook Lift · Pawn Promotion · Left Handed · White Cap · Loud Snacking)
- Clue 1 (Multiplication facts (1-12)): "THE SNEAKY CULPRIT DOES NOT USE SMOTHERED MATE"2 × 7 = 14 (T) · 7 × 9 = 63 (L) · 8 × 8 = 64 (C) · 11 × 11 = 121 (E) · 1 × 10 = 10 (O) · 6 × 6 = 36 (R) · 7 × 6 = 42 (N) · 3 × 9 = 27 (H) · 7 × 10 = 70 (M) · 11 × 2 = 22 (U) · 7 × 1 = 7 (I) · 8 × 9 = 72 (K) · 10 × 11 = 110 (P) · 3 × 10 = 30 (D) · 1 × 1 = 1 (A) · 12 × 12 = 144 (S) · 9 × 5 = 45 (Y)
- Clue 2 (Rounding): "WITNESS SAW LEFT HANDED PLAY ON THE BOARD"Round 23 to the nearest ten = 20 (W) · Round 291 to the nearest ten = 290 (H) · Round 9,172 to the nearest thousand = 9000 (E) · Round 1,274 to the nearest hundred = 1300 (F) · Round 30 to the nearest ten = 30 (I) · Round 6,590 to the nearest thousand = 7000 (L) · Round 88 to the nearest ten = 90 (T) · Round 4,261 to the nearest hundred = 4300 (R) · Round 1,059 to the nearest hundred = 1100 (S) · Round 132 to the nearest ten = 130 (N) · Round 2,295 to the nearest hundred = 2300 (A) · Round 251 to the nearest hundred = 300 (B) · Round 746 to the nearest hundred = 700 (D) · Round 74 to the nearest ten = 70 (O) · Round 370 to the nearest ten = 370 (Y) · Round 3,712 to the nearest hundred = 3700 (P)
- Clue 3 (Addition): "THE VILLAIN PANICKED FROM LOUD SNACKING"2823 + 3115 = 5938 (T) · 684 + 1373 = 2057 (R) · 2459 + 2602 = 5061 (L) · 4289 + 2968 = 7257 (I) · 3451 + 2121 = 5572 (U) · 2124 + 3454 = 5578 (V) · 4263 + 4818 = 9081 (D) · 3735 + 2358 = 6093 (O) · 933 + 2074 = 3007 (P) · 2108 + 2167 = 4275 (G) · 2859 + 1994 = 4853 (F) · 3595 + 2163 = 5758 (K) · 4929 + 4755 = 9684 (H) · 1145 + 1571 = 2716 (C) · 2146 + 4843 = 6989 (E) · 2734 + 2697 = 5431 (M) · 6036 + 3532 = 9568 (S) · 1345 + 1601 = 2946 (N) · 3088 + 2913 = 6001 (A)
- Clue 4 (Subtraction): "THE SNEAK DROPPED A WHITE CAP ON THE CHAIR"8582 - 3624 = 4958 (T) · 6543 - 979 = 5564 (C) · 8067 - 3134 = 4933 (W) · 9149 - 1463 = 7686 (H) · 3874 - 1014 = 2860 (O) · 9261 - 3887 = 5374 (R) · 1889 - 264 = 1625 (K) · 8807 - 2951 = 5856 (E) · 9022 - 2090 = 6932 (P) · 6119 - 535 = 5584 (S) · 7154 - 2787 = 4367 (D) · 4417 - 1053 = 3364 (A) · 4199 - 2020 = 2179 (N) · 9232 - 3995 = 5237 (I)
- Clue 5 (Division facts (1-12)): surviving statement (box 9) → Garry Kasparov49 ÷ 7 = 7 · 8 ÷ 2 = 4 · 33 ÷ 11 = 3 · 24 ÷ 4 = 6 · 24 ÷ 12 = 2 · 99 ÷ 9 = 11 · 88 ÷ 11 = 8 · 50 ÷ 5 = 10 · 55 ÷ 11 = 5 · 4 ÷ 4 = 1 · 132 ÷ 11 = 12
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Multiplication, Rounding, Addition, Subtraction, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Missing Golden Knight — set in Grand Masters Chess Hall
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects