I found the .CAS version. This game works only on MSX1 computers equiped with TMS and with its RAM in primary slot. So I modified it. Now it works even if the RAM is in secondary slot. I also made an English version. The zip is available on TFH site. By cons, I don't know why it doesn't work on MSX2s and newer.
Echec was writing to FFFFh address so it did not work when the RAM is in secondary slot. The poke couldn't help. I guess it doesn't work on MSX2 because it overwrites MSX2 system variables. I haven't checked. It could be another cause.
