It is a lie.
In 1991 in Mednoe have been found not 243 bodies, but FRAGMENTS of 243 bodies. Including skulls… 226 (!)
About it Pole Peshkovsky directly writes:
“Это последний обнаруженный в Медное череп - 226-й”
[З. Пешковский. “…И увидел ямы смерти” Харьков-Медное-Катынь." Перевод С. Родевича. Польша, Русское издательство “Катажина Фли-эгер”, 1995, с. 82]
Transleting:
" It is last found out in Mednoe a skull - 226-th "
[Z.Peshkovsky. "… Also has seen holes of death " Kharkov - Медное-Катынь ". S.Rodevicha’s translation. Poland, Russian publishing house " Катаpжина Флиэгер ", 1995, p. 82]
Calculation of bodies then was conducted not on skulls, but on right foot bones. That it was very convenient for Poles:)
Except for that these bones not from one hole have been dug out. And from 35:
В Медном работы проводились 15-25 августа 1991 г. на площади пятиугольника 37х108х36х120х120 м. Было сделано 30 раскопов и 5 дополнительных зондажей. Обнаружены останки не менее чем 243 поляков.
[И.С.Яжборовская, А.Ю.Яблоков,В.С.Парсаданова. Катынский синдром в советско-польских отношениях. М.РОСПЭН, 2001, с.482]
Transleting:
In Mednoe works were carried out(spent) on August, 15-25, 1991 on the area of a pentagon 37х108х36х120х120 by m. It has been made 30 holes and 5 additional soundings. Remains not less than 243 Poles are found out.
[I.S.Jazhborovskaja, A.J.Jablokov, V.S.Parsadanova. Катынский a syndrome in the советско-Polish relations. М.РОСПЭН, 2001, p. 482]
Result - in opinion of supporters of the Poland-German version ALL Poles have been killed by a shot to head in a cellar of building Kalinin’s NKVD and then buried in Mednoe.
But at excavation of 1991 appeared, that from 226 skulls bullet holes have only 169. And bullets have been found in general only in 5 (!) turtles.
From what follows, that 57 found remains completely precisely do not belong to Poles.