/* number of columns/rows, don't forget to adjust the HTML value */
g {
  --s: 70px;
  /* size of the puzzle */
  --r: 12px;
  display: grid;
  width: fit-content;
  border: 1px solid;
  margin: auto;
  grid: auto-flow var(--s) / repeat(5, var(--s));
}

g:before {
  content: "Original Image";
  color: #fff;
  font-size: 25px;
  font-weight: bold;
  text-shadow: 0 0 2px #000, 0 0 2px #000, 0 0 2px #000;
  position: fixed;
  top: 10px;
  left: 10px;
  width: calc(5 * var(--s) * 0.6);
  aspect-ratio: 1;
  mask: repeating-linear-gradient(-45deg, #000 0 10%, #000d 0 20%);
  background: var(--i) 0/100% 100%;
  display: grid;
  place-content: center;
}

z {
  display: grid;
  position: relative;
  pointer-events: none;
  outline: 1px dashed;
}

a {
  grid-area: 1/1;
  width: 0;
  transition: 0s 0.2s;
  pointer-events: initial;
}

b {
  grid-area: 1/1;
  z-index: 2;
  display: grid;
  filter: drop-shadow(0 0 2px red) drop-shadow(0 0 2px red);
  cursor: grab;
  pointer-events: initial;
  height: calc(100% + var(--r));
  width: calc(100% + var(--r));
  place-self: start end;
  --m: radial-gradient(var(--r) at calc(50% - var(--r) / 2) 0,
      #0000 98%,
      #000) var(--r) 0/100% var(--r) no-repeat,
    radial-gradient(var(--r) at calc(100% - var(--r)) calc(50% - var(--r) / 2),
      #0000 98%,
      #000) var(--r) 50%/100% calc(100% - 2 * var(--r)) no-repeat,
    radial-gradient(var(--r) at var(--r) calc(50% - var(--r) / 2),
      #000 98%,
      #0000),
    radial-gradient(var(--r) at calc(50% + var(--r) / 2) calc(100% - var(--r)),
      #000 98%,
      #0000);
}

b:before {
  content: "";
  background: var(--i) 0 / calc(5 * var(--s)) calc(5 * var(--s));
  -webkit-mask: var(--m);
  mask: var(--m);
}

z:first-child b {
  height: calc(100% + var(--r));
  width: 100%;
  --m: radial-gradient(var(--r) at 100% calc(50% + var(--r) / 2),
      #0000 98%,
      #000) 0 calc(-1 * var(--r)) no-repeat,
    radial-gradient(var(--r) at 50% calc(100% - var(--r)),
      #000 98%,
      #0000);
}

z:nth-child(-n + 4):not(:first-child) b {
  place-self: start end;
  height: calc(100% + var(--r));
  width: calc(100% + var(--r));
  --m: radial-gradient(var(--r) at calc(100% - var(--r)) calc(50% + var(--r) / 2),
      #0000 98%,
      #000) var(--r) calc(-1 * var(--r)) no-repeat,
    radial-gradient(var(--r) at var(--r) calc(50% - var(--r) / 2),
      #000 98%,
      #0000),
    radial-gradient(var(--r) at calc(50% + var(--r) / 2) calc(100% - var(--r)),
      #000 98%,
      #0000);
}

z:nth-child(5) b {
  place-self: start end;
  height: calc(100% + var(--r));
  width: calc(100% + var(--r));
  --m: linear-gradient(#000 0 0) var(--r) calc(-1 * var(--r)) no-repeat,
    radial-gradient(var(--r) at var(--r) calc(50% - var(--r) / 2),
      #000 98%,
      #0000),
    radial-gradient(var(--r) at calc(50% + var(--r) / 2) calc(100% - var(--r)),
      #000 98%,
      #0000);
}

z:nth-child(5n + 1):not(:first-child):not(:nth-last-child(5)) b {
  height: calc(100% + var(--r));
  width: 100%;
  --m: radial-gradient(var(--r) at 100% calc(50% - var(--r) / 2),
      #0000 98%,
      #000) 50%/ 100% calc(100% - 2 * var(--r)) no-repeat,
    radial-gradient(var(--r) at 50% 0, #0000 98%, #000) 0 0/ 100% var(--r) no-repeat,
    radial-gradient(var(--r) at 50% calc(100% - var(--r)),
      #000 98%,
      #0000);
}

z:nth-last-child(5) b {
  height: 100%;
  width: 100%;
  --m: radial-gradient(var(--r) at 100% calc(50% - var(--r)),
      #0000 98%,
      #000) 0 var(--r) no-repeat,
    radial-gradient(var(--r) at 50% 0, #0000 98%, #000) 0 0/ 100% var(--r) no-repeat;
}

z:nth-child(5n):not(:nth-child(5)):not(:last-child) b {
  place-self: start end;
  height: calc(100% + var(--r));
  width: calc(100% + var(--r));
  --m: radial-gradient(var(--r) at calc(50% - var(--r) / 2) var(--r),
      #0000 98%,
      #000) var(--r) calc(-1 * var(--r)) no-repeat,
    radial-gradient(var(--r) at var(--r) calc(50% - var(--r) / 2),
      #000 98%,
      #0000),
    radial-gradient(var(--r) at calc(50% + var(--r) / 2) calc(100% - var(--r)),
      #000 98%,
      #0000);
}

z:last-child b {
  place-self: end;
  height: 100%;
  width: calc(100% + var(--r));
  --m: radial-gradient(var(--r) at calc(50% - var(--r) / 2) 0,
      #0000 98%,
      #000) var(--r) 0 no-repeat,
    radial-gradient(var(--r) at var(--r) 50%, #000 98%, #0000);
}

z:nth-last-child(-n + 4):not(:last-child) b {
  place-self: end;
  height: 100%;
  width: calc(100% + var(--r));
  --m: radial-gradient(var(--r) at calc(50% - var(--r) / 2) 0,
      #0000 98%,
      #000) var(--r) 0/100% var(--r) no-repeat,
    radial-gradient(var(--r) at calc(100% - var(--r)) calc(50% - var(--r) / 2),
      #0000 98%,
      #000) var(--r) 100%/100% calc(100% - var(--r)) no-repeat,
    radial-gradient(var(--r) at var(--r) 50%, #000 98%, #0000);
}

z:nth-of-type(1) b {
  transform: translate(200%, 200%) rotate(151deg) translate(451%) rotate(-153deg);
}

z:nth-of-type(1) b:before {
  background-position: 0% 0%;
}

z:nth-of-type(2) b {
  transform: translate(100%, 200%) rotate(55deg) translate(464%) rotate(-60deg);
}

z:nth-of-type(2) b:before {
  background-position: 25% 0%;
}

z:nth-of-type(3) b {
  transform: translate(0%, 200%) rotate(160deg) translate(433%) rotate(-157deg);
}

z:nth-of-type(3) b:before {
  background-position: 50% 0%;
}

z:nth-of-type(4) b {
  transform: translate(-100%, 200%) rotate(33deg) translate(443%) rotate(-26deg);
}

z:nth-of-type(4) b:before {
  background-position: 75% 0%;
}

z:nth-of-type(5) b {
  transform: translate(-200%, 200%) rotate(148deg) translate(464%) rotate(-150deg);
}

z:nth-of-type(5) b:before {
  background-position: 100% 0%;
}

z:nth-of-type(6) b {
  transform: translate(200%, 100%) rotate(75deg) translate(403%) rotate(-80deg);
}

z:nth-of-type(6) b:before {
  background-position: 0% 25%;
}

z:nth-of-type(7) b {
  transform: translate(100%, 100%) rotate(91deg) translate(451%) rotate(-99deg);
}

z:nth-of-type(7) b:before {
  background-position: 25% 25%;
}

z:nth-of-type(8) b {
  transform: translate(0%, 100%) rotate(86deg) translate(465%) rotate(-87deg);
}

z:nth-of-type(8) b:before {
  background-position: 50% 25%;
}

z:nth-of-type(9) b {
  transform: translate(-100%, 100%) rotate(5deg) translate(412%) rotate(-3deg);
}

z:nth-of-type(9) b:before {
  background-position: 75% 25%;
}

z:nth-of-type(10) b {
  transform: translate(-200%, 100%) rotate(165deg) translate(429%) rotate(-173deg);
}

z:nth-of-type(10) b:before {
  background-position: 100% 25%;
}

z:nth-of-type(11) b {
  transform: translate(200%, 0%) rotate(3deg) translate(422%) rotate(1deg);
}

z:nth-of-type(11) b:before {
  background-position: 0% 50%;
}

z:nth-of-type(12) b {
  transform: translate(100%, 0%) rotate(142deg) translate(437%) rotate(-138deg);
}

z:nth-of-type(12) b:before {
  background-position: 25% 50%;
}

z:nth-of-type(13) b {
  transform: translate(0%, 0%) rotate(96deg) translate(415%) rotate(-93deg);
}

z:nth-of-type(13) b:before {
  background-position: 50% 50%;
}

z:nth-of-type(14) b {
  transform: translate(-100%, 0%) rotate(109deg) translate(414%) rotate(-108deg);
}

z:nth-of-type(14) b:before {
  background-position: 75% 50%;
}

z:nth-of-type(15) b {
  transform: translate(-200%, 0%) rotate(94deg) translate(459%) rotate(-100deg);
}

z:nth-of-type(15) b:before {
  background-position: 100% 50%;
}

z:nth-of-type(16) b {
  transform: translate(200%, -100%) rotate(3deg) translate(437%) rotate(0deg);
}

z:nth-of-type(16) b:before {
  background-position: 0% 75%;
}

z:nth-of-type(17) b {
  transform: translate(100%, -100%) rotate(45deg) translate(452%) rotate(-51deg);
}

z:nth-of-type(17) b:before {
  background-position: 25% 75%;
}

z:nth-of-type(18) b {
  transform: translate(0%, -100%) rotate(111deg) translate(428%) rotate(-109deg);
}

z:nth-of-type(18) b:before {
  background-position: 50% 75%;
}

z:nth-of-type(19) b {
  transform: translate(-100%, -100%) rotate(127deg) translate(443%) rotate(-130deg);
}

z:nth-of-type(19) b:before {
  background-position: 75% 75%;
}

z:nth-of-type(20) b {
  transform: translate(-200%, -100%) rotate(28deg) translate(421%) rotate(-34deg);
}

z:nth-of-type(20) b:before {
  background-position: 100% 75%;
}

z:nth-of-type(21) b {
  transform: translate(200%, -200%) rotate(19deg) translate(446%) rotate(-13deg);
}

z:nth-of-type(21) b:before {
  background-position: 0% 100%;
}

z:nth-of-type(22) b {
  transform: translate(100%, -200%) rotate(138deg) translate(410%) rotate(-143deg);
}

z:nth-of-type(22) b:before {
  background-position: 25% 100%;
}

z:nth-of-type(23) b {
  transform: translate(0%, -200%) rotate(148deg) translate(412%) rotate(-142deg);
}

z:nth-of-type(23) b:before {
  background-position: 50% 100%;
}

z:nth-of-type(24) b {
  transform: translate(-100%, -200%) rotate(26deg) translate(425%) rotate(-25deg);
}

z:nth-of-type(24) b:before {
  background-position: 75% 100%;
}

z:nth-of-type(25) b {
  transform: translate(-200%, -200%) rotate(174deg) translate(430%) rotate(-170deg);
}

z:nth-of-type(25) b:before {
  background-position: 100% 100%;
}

z b {
  transition: 9999s 9999s;
}

z:active a {
  width: 100%;
  transition: 0s;
}

z a:hover~b {
  transform: translate(0);
  filter: none;
  transition: 0s;
}

body {
  background: #798054;
  color: #fff;
  font-family: system-ui, sans-serif;
}

h1 {
  font-size: 2rem;
  margin: 0;
  text-align: center;
}

p {
  font-size: 0.8rem;
  text-align: center;
}