WPC 2022/Round 15

Duration: 90 minutes*. Total point value: 4400 points. Round winner: JPN-A (Ken Endo, Hideaki Jo, Yuki Kawabe, Kota Morinishi), 4350 points.

• The round proceeds in several stages; the duration is an estimate provided on the IB.

Puzzles

This round features one-on-one team matches. From the IB:

"Each team will play at least 5 games against other teams. In each game there will be four 1-on-1 battles with 7 minutes time limit. Each battle won will give 1 small point to the team. Team with higher number of small points in the game will win the game and will get 3 big points. If both teams collected the same number of small points in the game, then both teams will get 1 big point.

Pairs for each game will be drawn. Before the draw teams will be split into six 8-teams pots based on team classification at the end of day 1. Each team will play one game against a team from each other pot. Players from the same country can't be matched. Teams will be classified based on: 1) sum of big points, 2) difference between gained and lost small points, 3) result after day 2, 4) result in Round 14, 5) result in Round 7, 6) draw

Top 16 teams will qualify to second round. In second round teams will be matched based on their places after 5 games and following games will be played: 1-16, 2-15, ..., 8-9.

Winners will qualify to quarterfinals in which following games will be played:

• Q1: Winner 1-16 - Winner 8-9
• Q2: Winner 2-15 - Winner 7-10
• Q3: Winner 3-14 - Winner 6-11
• Q4: Winner 4-13 - Winner 5-12

Winners will qualify to semifinals in which following games will be played:

• Winner Q1 - Winner Q4
• Winner Q2 - Winner Q3

Winners of semifinals will qualify to the final.

If there will be a draw in second round, quarterfinal, semifinal or final then following tie-breakers will be used

1. team that collect 2 small points earlier will win the game,
2. team that collect 1 small point earlier will win the game,
3. team that was on higher place after 5 games

If player will complete a puzzle, player should grab a small item that will be put between two players playing in the same battle. If all battles in the game will end, then opponent of player that completed a puzzle should check if solution is correct (correct solution will be delivered by the referee). If puzzle is solved correctly, player that solved it will get 1 small point. If solution is incorrect - opponent will get 1 small point. Teams should determine the result of the game and give it to the referee. If players don't agree in terms of correctness of the solution - the referee will decide about it.

Points for teams will be given for small points (25 points), big points (100 points, only in group stage), place in top 16 (400 points), results in second round, quarterfinal, semifinal and final (400 points per win)."

The first five puzzles are used for group stage, the next four are for the four elimination stage:

1. Tapa (Hex) by JinHoo Ahn
2. Nurikabe (Pairs) by Michał Stajszczak
3. Wittgenstein Briquet by Martin Ender
4. Heyawake by Martin Ender
5. Cave by Jinhoo Ahn
6. Shimaguni by Martin Ender
7. Skyscrapers (Parks) by Michał Stajszczak
8. Aqre by Serkan Yürekli
9. Cross the Streams by Tom Coward