Hamiltonian Paths in Some Classes of Grid Graphs

<table><svg height="10.325" id="M632" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 12.05 10.325" width="12.05" xmlns="http://www.w3.org/2000/svg">
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</svg>-alphabet grid graphs in which there is no Hamiltonian path between <svg height="7.1875" id="M633" style="vertical-align:-0.13794pt" version="1.1" viewbox="0 0 7 7.1875" width="7" xmlns="http://www.w3.org/2000/svg">
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<g transform="translate(72,-66.25)">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑠</tspan>
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</svg> and <svg height="9.125" id="M634" style="vertical-align:-0.11285pt" version="1.1" viewbox="0 0 5.0124998 9.125" width="5.0124998" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">𝑡</tspan>
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Journal of Applied Mathematics

Hamiltonian Paths in Some Classes of Grid Graphs

Figure 9