By the letter of the law, only tricks won in play are transferable in payment of a revoke penalty. Technically, South could take only one trick from East-West; this would give him thirteen tricks again. East-West could then take two tricks from South; this would reduce South to eleven tricks and cause h's small-slam contract to be defeated by one trick.
There are, however, some members of the committee which makes the bridge laws who hold that the two revokes (dummy's revoke, under the law, is not subject to penalty) should be permitted to cancel each other. so that there would be no actual transfer of tricks and South would make his contract. This would appear to be the most equitable adjustment, since South was able at all times to win all thirteen. tricks.
In the actual circumstances, the players at the table decided to permit each side to claim two tricks from the other, so that the penalties washed each other out, and South was credited with having made six clubs.
Text read from the printed page and cleaned; old type leaves the occasional error.