Novel hardware/software co-design approach for Connect6 game-solver

•Novel Hardware-Software Co-Design Connect6 solver for enhanced performance.•Utilized a novel data communication technique to minimize bits transferred between hardware and software, reducing communication overhead.•Used advanced tree-searching algorithms like Negascout, iterative deepening, node ordering, and memoization to optimize best move search.•Efficiency Gains in Communication and Speed: 92 % less overhead and 50 % overall enhancement than the existing model, 4x faster than software on Xilinx Zedboard SOC.