MESON Chess Problem Database

Problem Display
PID: 189685 (8/4k3/7P/1Q4P1/5P2/1B6/3K4/8 w - - 0 1)

Weyl, Paul

Leipziger Tageblatt, 1912

8/4k3/7P/1Q4P1/5P2/1B6/3K4/8

#2

6 + 1

5454 Near Snap 2019
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qd3?
      • 1...Kf8
        • 2.Qd8#
      • 1...Ke8!
    • 1.Qd7+?
      • 1...Kf8
        • 2.Qf7#
        • 2.Qd8#
      • 1...Kxd7!
    • 1.Qd5?
      • 1...Kf8
        • 2.Qf7#
        • 2.Qd8#
      • 1...Ke8!
  • Keys
    • 1.Ba4!
      • 1...Kd6
        • 2.Qe5#
      • 1...Ke6
        • 2.Qd7#
      • 1...Kf7
        • 2.Qe8#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8
        • 2.Qe8#

Anticipated by 2392(0000), 120940(1877), 214368(1878), 9327(1880), 222385(1884), 222932(1885), 158307(1906-1907), 184881(1908), 189438(1911)

This anticipates 178322(1928), 96980(1943), 76834(1947), 103960(1993), 202752(2016)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);P-FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
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