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  2. Queen versus rook endgame - Wikipedia

    en.wikipedia.org/wiki/Queen_versus_rook_endgame

    White would then have to lose time and find several difficult moves: 2.Qf7+ Kd6 3.Qb3 (denying d1 and a4 to the rook) 3...Ke7 4.Qc3 Ra6 5.Qc7+ Kf6 6.Qd8+ and 7.Ke5 will force Black into a third-rank defense.

  3. Threefold repetition - Wikipedia

    en.wikipedia.org/wiki/Threefold_repetition

    In Tim Harding's MegaCorr database (a collection of correspondence chess games), the notes to a game between the cities of Pest and Paris played between 1842 and 1845 state that a sixfold repetition was necessary to claim a draw. The game went: 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.0-0 0-0 8.c4 Be6 9.Qc2 f5 10.Qb3 dxc4 11 ...

  4. Draw (chess) - Wikipedia

    en.wikipedia.org/wiki/Draw_(chess)

    A positional draw is an impasse other than stalemate, where a draw is salvaged despite a big material disadvantage (see Fortress (chess) § Positional draw). A grandmaster draw is a game in which the players quickly agree to a draw after making little or no effort to win (see Draw by agreement § Grandmaster draw).

  5. Special right triangle - Wikipedia

    en.wikipedia.org/wiki/Special_right_triangle

    Set square shaped as 45° - 45° - 90° triangle The side lengths of a 45° - 45° - 90° triangle 45° - 45° - 90° right triangle of hypotenuse length 1.. In plane geometry, dividing a square along its diagonal results in two isosceles right triangles, each with one right angle (90°, ⁠ π / 2 ⁠ radians) and two other congruent angles each measuring half of a right angle (45°, or ...

  6. Three points for a win - Wikipedia

    en.wikipedia.org/wiki/Three_points_for_a_win

    W3 5-4-3-2 would be W2 4-3-3-2. Exactly as the W3 7-4-3-1 case above, looking at the middle two teams, W3 2nd (1 win, 1 loss & 1 draw) rank above W3 3rd (3 draws and therefore had a goal difference = 0). Under W2 these two teams are equal on 3 points and their rank is based on goal difference and other ranking criteria.

  7. “What’s Something You’ve Been Doing Wrong For Years And Then ...

    www.aol.com/wash-rice-66-things-people-064516672...

    If you actually don’t have a blue or a 4 then that person has to draw 6. Been playing it wrong all my life! #63. Brush your teeth in the shower to save time. #64.

  8. Lottery mathematics - Wikipedia

    en.wikipedia.org/wiki/Lottery_mathematics

    For a score of n (for example, if 3 choices match three of the 6 balls drawn, then n = 3), () describes the odds of selecting n winning numbers from the 6 winning numbers. This means that there are 6 - n losing numbers, which are chosen from the 43 losing numbers in ( 43 6 − n ) {\displaystyle {43 \choose 6-n}} ways.

  9. Draw by agreement - Wikipedia

    en.wikipedia.org/wiki/Draw_by_agreement

    A game of chess can end in a draw by agreement.A player may offer a draw at any stage of a game; if the opponent accepts, the game is a draw. [1] In some competitions, draws by agreement are restricted; for example draw offers may be subject to the discretion of the arbiter, or may be forbidden before move 30 or 40, or even forbidden altogether.