in 1955 an intresting incident took place at gottenberg. swiden. intewrzonal chess tournament. incidentaly 3 Russian met 3arzentinians in the same round same day.all 3 games concluded almost in xame way including a sacrifice..this is only circumstance in whole chess history. 3 Russians were. spassky, keres nd geller. 3 arzentinians were. najdorf, panov nd pilnik.all 3 Russian won.