helpmates

999selfmates
743directmates
469problems
373Sornegau
348solve
338solving
316pieces
314Plachutta
307solved
303trisecting
        
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solves solvable EXPSPACE Problemist PSPACE satisfiability NP endgame direct psychospiritual teething AMPL metatheoretical Aavakaaya shatranj Drumare CAGA KMixer problem optimization ZQund3 endgames intractable universam tyrannicides Hetin fix susy arise meric combinatorial intractability troubleshoot BATV undecidable Yannakakis solutions unsolvable coercions

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