MESON Chess Problem Database

Problem Display
PID: 169618 (7K/6P1/3Q4/2B3k1/6P1/7P/8/8 w - - 0 1)

Hoffmann, Klaus Peter

Heilbronner Stimme, 2002

7K/6P1/3Q4/2B3k1/6P1/7P/8/8

#2

6 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe7+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh6
        • 2.Qf6#
      • 1...Kg6!
    • 1.Qf8?
      • 1...Kg6
        • 2.g8Q#
        • 2.g8R#
      • 1...Kh6
        • 2.Qf6#
        • 2.g8Q#
        • 2.g8R#
      • 1...Kh4!
    • 1.Qe6?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh4!
  • Keys
    • 1.Qd3!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Be7#
      • 1...Kf6
        • 2.Qf5#
      • 1...Kh6
        • 2.Be3#

Anticipated by 2475(0000), 5102(1899), 223485(1926), 164208(1988), 104591(1999)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::B(C)
      • K(a);S_FLIGHT::QAR1(D)
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