Guardsmen, with spear butts and cruel shield rims, forced back two more men from the stage's edge.

Scormus of Ar moved a piece.

"Spearman takes Rider of the High Tharlarion," said the man next to me, bitterly.

I saw this on the great board. Yellow's pieces, as they are arranged, begin from their placements at the lower edge of the great board, red's pieces from their placement at its upper edge.

Centius of Cos had now lost four pieces, without a single retaliatory or compensating capture. He was four pieces down, three spearmen and a Rider of the High Tharlarion. His minor pieces on the Ubar's side had almost been wiped out. I noted, however, that he had not lost a major piece. The response of Centius of Cos to the loss of his Rider of the High Tharlarion was to retake with his Ubar's Initiate.

There was a sigh of satisfaction, of relief from the crowd. Centius of Cos had at least seen this elementary move. There were derisive comments in the audience, commending this bit of expertise on his part.

This move, of course, developed the Ubar's Initiate. J also noted, as I had not noted before, that red's Ubar's Scribe was developed. This was the result of the earlier advance of red's Ubar's Tarnsman's Spearman. The Ubara, of course, as I have mentioned, had been developed to Ubar's Scribe four. The Ubar, too, I suddenly realized, stood on an open file. I suddenly realized that red had developed four major pieces.

Scormus, on his sixth move, advanced his Ubar's Spearman to Ubar four. Ubar five would have been impractical because at that point the spearman would have been subjected to the attack of red's Ubara and Ubar. Scormus now had a spear-man again in the center. He would support this spearman, consolidate the center and then begin a massive attack on red's weakened Ubar's side. Scormus would place his Home Stone, of course, on the Ubara's side, probably at Builder one. This would free his Ubar's side's pieces for the attack on red's Ubar's side.

Centius of Cos then, on his sixth move, placed his Ubar at Ubar four. This seemed too short a thrust for an attack. It did, however, place his Ubar on the same rank with the Ubara, where they might defend one another. The move seemed a bit timid to me. Too, it seemed excessively defensive. I supposed, however, in playing with a Scormus of Ar, one could not be blamed for undertaking careful defensive measures.

On his seventh move Scormus advanced his Ubar's Tarnsman's Spearman to Ubar's Tarnsman five. At this point it was protected by the spearman at Ubar four, and could soon, in league with other pieces, begin the inexorable attack down the file of the Ubar's Tarnsman.

Scormus of Ar was mounting his attack with care. It would be exact and relentless.

I suddenly realized that yellow had not yet placed his Home Stone.

The oddity in the game now struck me.

No major piece had yet been moved by yellow, not an Initiate, nor a Builder, nor a Scribe, nor a Tarnsman, nor the Ubar nor Ubara. Each of these major pieces remained in its original location. Not one piece had yet been moved by yellow from the row of the Home Stone.

I began to sweat.

I watched the great board. It was as I had feared. On his seventh move Centius of Cos advanced his Rider of the High Tharlarion to Ubara's Builder three. This would prepare for Builder to Builder two, and, on the third move, for placement of Home Stone at Builder one.

The crowd was suddenly quiet. They, too, realized what I had just realized.

Anxiously we studied the board.

If Scormus wished to place his Home Stone at either Ubar's Builder one or Ubara's Builder one, it would take three moves to do so. It would also take three moves if he wished to place it at Ubar's Initiate one, or at Ubara's Scribe one, Ubara's Builder one or Ubara's Initiate one. He could place the Home Stone, of course, in two moves, if he would place it at Ubar's Tarnsman one, or Ubar's Scribe one, or Ubar one, or Ubara one, or Ubara's Tarnsman one. But these placements permitted within two moves left the Home Stone too centralized, too exposed and vulnerable. They were not wise Placements.

Already, though he had red. Centius of Cos was moving to place his Home Stone.

Now, on his eighth move, Scormus of Ar angrily advanced his Rider of the High Tharlarion to Builder three. His attack must be momentarily postponed.

On his own eighth move Centius of Cos advanced his Ubara's Builder to Builder two, to clear Builder one for placement of Home Stone.

On his ninth move Scormus of Ar, following suit, advanced his Ubara's Builder to Builder two, to open Builder one for the positioning of the Home Stone on the tenth move.

We watched the great board.

Centius of Cos placed his Home Stone at his Ubara's Builder one. He had done this on his ninth move. It needed not be done before the tenth move. His tenth move was now free, to spend as he would.

Scormus of Ar, on his tenth move, inexplicably to many in the crowd, though he possessed yellow, a move behind, placed his Home Stone at Builder one.

The two Home stones, at their respective locations, faced one another, each shielded by its several defending pieces, Scribe and Initiate, one of the central spearmen, a flanking spearman, a Builder, a Physician, and a Rider of the High Tharlarion.

Scormus might now renew his attack.

"No," I cried suddenly. "No, look!"

I rose to my feet. There were tears in my eyes. "Look!" I wept. "Look!"

The man next to me saw it, too, and then another, and another.

Men of Cos seized one another, embracing. Even men of Ar cried out with joy.

Red's Ubar's Initiate controlled the Ubar's Initiate's Diagonal; the red Ubara controlled the Ubar's Physician's Diagonal; the red Ubar controlled the Ubar's Builder's Diagonal; the Ubar's Scribe controlled the Ubar's Scribe's Diagonal. Red controlled not one but four adjacent diagonals, unobstructed diagonals, each bearing on the citadel of yellow's Home Stone; the red Ubara threatened the Ubara's Scribe's Spearman at Ubara's Scribe two; the Initiate threatened the Ubara's Builder at Builder two, positioned directly before yellow's Home Stone; the Ubar threatened the Rider of the High Tharlarion at Builder three; the Scribe threatened the Ubara's Flanking Spearman at Ubara's Initiate three. I had never seen such power amassed so subtly in Kaissa. The attack, of course, was not on the Ubar's side but on the side of the Ubara, where Scormus had placed his Home Stone. Moves which had appeared to weaken red's position had served actually to produce an incredible lead in development; moves which had appeared meaningless or defensive had actually been deeply insidious; the timorous feint to the Ubar's side by red with the Ubara and Ubar had, in actuality, prepared a trap in which Scormus had little choice but to place his Home Stone.

On his tenth move Centius of Cos moved his Rider of the High Tharlarion, which had been at Builder three, obliquely to Builder four. This opened the file of the Builder. The power of this major piece now, in conjunction with the might of the Ubar, focused on yellow's Rider of the High Tharlarion. The attack had begun.

I shall not describe the following moves in detail. There were eleven of them.

On what would have been his twenty-second move Scormus of Ar, saying nothing, rose to his feet. He stood beside the board, and then, with one finger, delicately, tipped his Ubar. He set the clocks on their side, stopping the flow of sand, turned, and left the stage.

For a moment the crowd was silent, stunned, and then pandemonium broke out. Men leaped upon one another; cushions and caps flew into the air. The bowl of the amphitheater rocked with sound. I could scarcely hear myself shouting. Two men fell from the tier behind me. I scrambled onto my tier, straining to see the stage. I was buffeted to one side and then the other.