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| Begegnungen |
Invasion |
4 Red Squares by Red |
Black Triangle in Red Square - What a Black Light in the Tunnel! |
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| Highway of Heart |
1 Square surrounded by different Lines to build other Squares |
Tender Squares # 1 |
Unfinished Squares # 6 |
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| Unfinished Squares # 4 |
Unfinished Squares # 6 |
Tender, Unfinished Squares # 7 |
Unfinished Squares, headed by a complete one |
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| Sequence of Triangles |
Dynamic Unfinished Squares |
Dynamic Unfinished Squares II |
Inferno |
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| Dynamic Triangles #9 |
Distinguished Triangles |
Tender Squares #1 |
Light and Dark Triangles |