down. I decided on a crossed-force, double decoy gambit. I had never seen it employed. Because, I suspect, it is too involved, and open to error by its user. Slowly and painstakingly I set it up and pressed forward.
The Caliban in the seat opposite me never paused. He matched me play for play. And though Yondtl's features had long since lost the power of expression, his pale eyes seemed to develop a blue luster. I realized, almost with a shock of surprise, that the fat monstrosity was happy—intensely happy. I came out of my brief reverie with a start. Yondtl had made an obvious play. I had made an obvious counter. I was startled to hear him sound a cry somewhere between a muffled shout and an idiot's laugh, and my attention jerked back to the board. I had lost the game!
My brief moment of abstraction had given Yondtl the opportunity to make a pass too subtle to be detected with part of my faculties occupied elsewhere.
I pushed back my chair. "I've had enough for tonight," I told Trobt. If I were to do the Humans a service, I would need rest before trying Yondtl in the second game. We made arrangements to meet again the following evening, and let ourselves out. The old woman was nowhere in sight.
* * *
The following evening when we began play I was prepared to give my best. I was rested and eager. And I had a concrete plan. Playing the way I had been doing I would never beat Yondtl, I'd decided after long thought. A stand-off was the best I could hope for. Therefore the time had come for more consummate action. I would engage him in a triple decoy gambit!
I had no illusion that I could handle it—the way it should be handled. I doubt that any man, Human or Veldian, could. But at least I would play it with the greatest skill I had, giving my best to every move, and push the game up the scale of reason and involution—up and up—until either Yondtl or I became lost in its innumerable complexities, and fell.
As I attacked, the complexes and complications would grow gradually more numerous, become more and more difficult, until they embraced a span greater than one of us had the capacity to encompass, and the other would win.
The Game began and I forced it into the pattern I had planned. Each play, and each maneuver, became all important, and demanding of the greatest skill I could command. Each pulled at the core of my brain, dragging out the last iota of sentient stuff that writhed there. Yondtl stayed with me, complex gambit through complex gambit.
When the strain became too great I forced my mind to pause, to rest, and to be ready for the next clash. At the first break I searched the annotator. It was working steadily, with an almost smooth throb of efficiency, keeping the position of each pukt—and its value—strong in the forefront of visualization. But something was missing!
A minute went by before I spotted the fault. The move of each pukt involved so many possibilities, so many avenues of choice, that no exact answer was predictable on any one. The number and variation of gambits open on every play, each subject to the multitude of Yondtl's counter moves, stretched the possibilities beyond prediction. The annotator was a harmonizing, perceptive force, but not a creative, initiating one. It operated in a statistical manner, similar to a computer, and could not perform effectively where a crucial factor or factors were unknown, or concealed, as they were here. My greatest asset was negated.
At the end of the third hour I began to feel a steady pain in my temples, as though a tight metal band pressed against my forehead and squeezed it inward. The only reaction I could discern in Yondtl was that the blue glint in his eyes had become brighter. All his happiness seemed gathered there. Soon my pauses became more frequent. Great waves of brain weariness had to be allowed to subside before I could play again.
And at last it came.
Suddenly, unexpectedly, Yondtl threw a pukt across the board and took my second