WSRF CLASSIC SHAPE ACADEMY

5 Shape Modes — 16 Techniques — Why This Move?

Paper
Theme
01:07
Time
0/3
Mistakes
Imported
Difficulty
Guided
Mode

COACH

Move 1 of 58
L1 Foundation Last Remaining ● Zone Lock
Cross-hatching reveals 6 can only go in one cell in Box 1
UPCOMING
L1 Foundation Last Remaining — R3C9
L1 Foundation Last Remaining — R3C7
L1 Foundation Last Remaining — R9C5
L3 Advanced Pointing Pair

CELL INSPECTOR

R1C1
Candidates: 123467
L1 Foundation Last Remaining — Place 6
123456789
Blocked by placement
5 ✖ R2C2 (box)
8 ✖ R1C9 (row)
9 ✖ R1C4 (row)
13 steps remaining
✨ Why This Move? (● Zone Lock)
In the unit, digit 6 can only go in one cell.
Every other spot is blocked by 6 in a shared row, col, or box.
R1C1 is the only opening — place 6.
WSRF Techniques
● Zone Lock
L1Last RemainingPLACE → 6
⭐ Combo: unlocks 2 Last Remaining
L2Hidden SinglePLACE → 6
⭐ Combo: unlocks 2 Last Remaining
═ Beam Scan
L3ClaimingPART OF
◈ Psychic Resonance
L3SwordfishPART OF
⟶ Force Vision
L4Forcing ChainPLACE → 6
⭐ Combo: unlocks 2 Last Remaining
◎ Zone Trace
Trace the path. See the answer.
Direct solve → 6
①●Last Remaining → Place 6

SESSION

Accuracy--
Self-Found0
Coached0
Moves0
Technique Distribution
1
2
3
4
6
7
2
3
4
7
1
2
4
7
9
1
3
5
7
2
5
7
2
3
6
7
1
2
3
6
7
8
9
5
1
2
7
4
1
3
7
8
2
7
8
2
3
6
7
1
2
3
6
7
1
2
3
6
1
2
3
4
7
8
2
3
4
7
8
1
2
4
7
1
3
7
8
6
2
7
8
2
3
7
9
5
1
2
3
4
9
1
2
4
5
7
2
4
7
9
3
1
5
6
7
1
5
7
9
5
6
7
9
2
5
6
7
9
8
2
5
6
9
5
7
7
9
8
2
3
5
7
9
4
1
3
6
7
9
3
5
6
9
1
2
5
7
6
1
2
5
7
9
1
3
5
7
8
1
3
5
7
8
9
5
7
8
9
4
2
3
7
9
2
3
5
9
3
4
5
7
8
1
4
5
7
9
5
6
7
8
2
5
6
7
8
9
3
5
6
9
3
6
9
3
5
6
9
2
3
5
8
2
3
8
9
2
5
9
5
6
8
5
8
9
1
2
3
5
6
9
4
7
2
4
5
7
2
4
7
9
6
5
7
4
5
7
9
3
8
1
2
9
1
2
5
9
Medium | Guided | ✦ Any Shape
1-9 Place Del Erase C Candidates Z Zone Scan L Zone Card Ctrl+Z Undo Arrows Nav

CURRENT TECHNIQUE

L1 Foundation
Last Remaining
By checking where a number already appears in neighboring rows and columns, you can determine that it can only fit in one cell of a box.
What to look for: Pick a number, scan its placements in surrounding boxes. Crossing out occupied rows and columns often leaves exactly one possibility.
Pro tip: This is the bread-and-butter technique. Master cross-hatching and you will solve most Easy/Medium puzzles.
WSRF Zone Signal
HOT digit with cross-hatch narrowing to single box position.
● WSRF Shape: Zone Lock

MASTERY

Full House
17%
Last Remaining
7%
Naked Single
30%
Hidden Single
0%
Naked Pair
0%
Naked Triple
0%
Naked Quad
0%
Hidden Pair
--
Hidden Triple
0%
Pointing Pair
0%
Claiming
0%
X-Wing
--
Finned X-Wing
0%
Swordfish
--
Finned Swordfish
--
XY-Wing
--
XYZ-Wing
--
W-Wing
--
Simple Coloring
0%
Unique Rectangle
--
Forcing Chain
0%
AIC
0%
ALS-XZ
0%
ALS-XY-Wing
0%
Death Blossom
--
Sue de Coq
--
Forcing Net
--
Kraken Fish
--
Junior Exocet
--
SK Loop
--
Template
--

BOARD ANALYSIS

Empty Cells58
L1 Foundation3
L2 Intermediate3
L3 Advanced0
L4 Expert0
L5 Master0
L6 Grandmaster0
L7 Super Intelligence0
☠ LETHAL INJECTION
Bounded Cascade Unraveler — No Recursion
Place a digit to see the cascade chain unfold step by step.

Puzzle Complete!

Excellent work!
--
Time
0
Mistakes
--
Accuracy
--
Difficulty

Game Over

3 mistakes reached. Better luck next time!
--
Time
--
Progress

Puzzle Complete!

Nice work!
--
Time
0/7
Mistakes
0
Streak
INTERMEDIATE

Technique Drill

Choose a technique to practice

Drill Complete!

Nice work on this board!
0
Self-Found
0
Coached
0
Best Streak
0
Boards

Zone Sight

Based on the zone state, which technique should you look for?
Downloaded wsrf_solve.json