Combination3D Dataset v2 Validation Report
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Total images checked: 3000
Total questions checked: 15000
Total mismatches found: 0
Vertical axis: z (the renderer maps increasing z upward on screen)
Previous wrong Level 4 answers: 0
Answer changes by level: {1: 0, 2: 0, 3: 0, 4: 0, 5: 0}
Exhaustive assembly ambiguities: 0
Failure-reason mismatches: 0
PNG cube/piece/height recovery: 3000/3000
Level distributions: {'1': {'14': 419, '8': 431, '12': 436, '10': 430, '9': 412, '11': 435, '13': 437}, '2': {'A': 750, 'B': 750, 'C': 750, 'D': 750}, '3': {'yes': 1020, '3': 681, 'no': 525, '2': 774}, '4': {'14,3': 59, '8,2': 74, '12,4': 35, 'C': 496, '10,1': 19, 'A': 465, 'B': 515, 'D': 512, '13,3': 57, '13,2': 30, '11,3': 43, '14,4': 36, '13,4': 32, '14,5': 27, '14,2': 15, '9,3': 49, '12,3': 57, '11,2': 64, '9,2': 60, '10,4': 22, '11,4': 27, '12,2': 46, '10,3': 51, '8,1': 35, '8,3': 40, '9,4': 17, '9,1': 24, '10,2': 51, '13,5': 18, '11,5': 5, '12,5': 12, '8,4': 2, '10,5': 3, '9,5': 2}, '5': {'same shape, different angle': 1012, '9,3': 157, '10,3': 122, '12,4': 97, '11,4': 83, '12,3': 127, '13,3': 79, '14,3': 59, '14,4': 119, '13,6': 19, '14,5': 88, '9,2': 51, '13,5': 63, '11,3': 125, '10,4': 64, '15,6': 55, '15,4': 108, '12,5': 57, '13,4': 125, '15,5': 84, '10,2': 48, '11,5': 35, '15,3': 35, '11,2': 34, '14,6': 34, '10,5': 22, '10,6': 4, '11,6': 7, '12,6': 15, '9,4': 60, '9,5': 11, '9,6': 1}}
Constant baselines: {'1': 0.14566666666666667, '2': 0.25, '3': 0.34, '4': 0.17166666666666666, '5': 0.3373333333333333}
Features at V >= 0.10 (nothing hidden): {'target_cube_count': {'1': 1.0, '2': 0.03494492, '3': 0.0490682, '4': 0.5822156, '5': 0.8139817}, 'height_z_layers': {'1': 0.26093247, '2': 0.03631313, '3': 0.04916824, '4': 0.58487031, '5': 0.81197214}, 'correct_answer_choice': {'1': 0.03494492, '2': 1.0, '3': 0.03210255, '4': 0.28805562, '5': 0.11015115}, 'canvas_width': {'1': 0.05734212, '2': 0.0541331, '3': 0.05060584, '4': 0.09904617, '5': 0.10535211}, 'canvas_height': {'1': 0.05914699, '2': 0.06016175, '3': 0.071424, '4': 0.1076398, '5': 0.10390727}, 'difficulty_score': {'1': 0.8149961, '2': 0.04714994, '3': 0.23003602, '4': 0.39059914, '5': 0.54773406}, 'correct_piece_count': {'1': 0.03497542, '2': 0.02643476, '3': 0.50560758, '4': 0.10633122, '5': 0.09611207}}
Guard injection tests: {'target_connected': {'violating_disconnected_accepted': False, 'boundary_two_face_connected_accepted': True}, 'gravity_support': {'violating_floating_accepted': False, 'boundary_ground_cube_accepted': True}, 'piece_size': {'violating_one_cube_accepted': False, 'boundary_two_cube_accepted': True}, 'unique_vertical_assembly': {'violating_two_valid_candidates_accepted': False, 'boundary_one_valid_candidate_accepted': True}, 'failure_reason': {'violating_mislabeled_accepted': False, 'boundary_correct_label_accepted': True}}
Reference-frame audit: target height, renderer vertical, and permitted rotations all use z.

Mismatches:
  None

Summary: PASS