Where is the seeded Level 154 penguin?

The opening penguin is at r8c5, with the first visible X line on the rest of column 5.

Were any red errors recorded on Level 154?

No red failed tap appears in this 10x10 recording; the direct MP4 ends with all three hearts intact.

The tenth penguin is placed at r3c6 in the blue-gray region, completing Unbelievable with all three hearts.

Zoodoku level guide

expert 10 colors

Solve Zoodoku Level 154 from seeded penguin r8c5, then place r9c2, r7c3, r1c8, r6c10, r5c7, r4c9, r10c4, r2c1, and r3c6.

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Keep the seeded penguin at r8c5 in the teal region.
Place the second penguin at r9c2 in the green region.
Place the third penguin at r7c3 in the light-green region.
Place the fourth penguin at r1c8 in the brown region.
Place the fifth penguin at r6c10 in the purple region.
Place the sixth penguin at r5c7 in the yellow region.
Place the seventh penguin at r4c9 in the pink region.
Place the eighth penguin at r10c4 in the lower teal band.
Place the ninth penguin at r2c1 in the orange region.
Finish with the tenth penguin at r3c6 in the blue-gray region, then confirm Unbelievable with all three hearts remaining.

Colors in this level:

Orange, Blue-gray, Brown, Pink, Teal, Yellow, Purple, Light-green, Burgundy, Green

Do not tap opening-X r7c5: the accepted light-green target is r7c3.
Do not use opening-X r10c5 for the late teal placement; the source accepts r10c4.

Keep r8c5, then use green r9c2 and light-green r7c3 before brown r1c8.
After pink r4c9, follow the verified close r10c4 -> r2c1 -> r3c6; do not use opening-X r10c5.

Board notes 5 details

Layout: The 10x10 opening has orange and blue-gray across the top, pink at the right edge, teal through the lower-left, yellow through the center-right, purple at the lower-right, light-green r7c2-r7c3, green r9c2, burgundy r7c5, and the seeded teal r8c5.
Goal: Keep seeded penguin r8c5 and reproduce the verified successful order r9c2, r7c3, r1c8, r6c10, r5c7, r4c9, r10c4, r2c1, and r3c6.
Opening: The first clean frame has the penguin seed at r8c5 and opening white Xs r1c5-r7c5 plus r9c5-r10c5; the source opens r9c2 and r7c3.
Danger Zone: No red tap is visible. Opening-X r7c5 is not a target; use light-green r7c3, then preserve the late teal r10c4 rather than opening-X r10c5.
Mechanics: This is a seeded ten-penguin 10x10 board with row, column, territory, and eight-neighbor exclusions; all three hearts remain at the Unbelievable finish.

Where is the seeded Level 154 penguin?
The opening penguin is at r8c5, with the first visible X line on the rest of column 5.
Were any red errors recorded on Level 154?
No red failed tap appears in this 10x10 recording; the direct MP4 ends with all three hearts intact.
Which penguin is placed last on Level 154?
The tenth penguin is placed at r3c6 in the blue-gray region, completing Unbelievable with all three hearts.