ZX Spectrum 128 chess puzzles

ChessZX is a project for ZX Spectrum 128 (wiki). Highly compressed 8416 computer generated chess puzzles M1,M2,M3. This .SNA file , .TAP file (download) snapshot is loadable on emulators Speccy, EmuZWin, ZXSpin, others. The assembler code has been compiled on SjASMPlus. User can redefine cursor keys, Kempston joystick . No mouse, no floppy disk. Code sources available on GitHub. jsChessZX - play in online javascript emulator, thanks to jbacteria  ...or on js-dos speccy online