MESON Chess Problem Database

Problem Display
PID: 85956 (2B1K3/8/4R3/6k1/8/4P2Q/8/8 w - - 0 1)

Speckmann, Werner

Berliner Morgenpost, 1964

2B1K3/8/4R3/6k1/8/4P2Q/8/8

#2

5 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Re4?
      • 1...Kf6
        • 2.Qh6#
      • 1...Kg6!
    • 1.Re7?
      • 1...Kf6
        • 2.Qf5#
        • 2.Qh6#
      • 1...Kg6!
    • 1.Qg2+?
      • 1...Kh4
        • 2.Rh6#
      • 1...Kf5
        • 2.Qg6#
      • 1...Kh5!
    • 1.Qh2?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qh5#
      • 1...Kg4!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qg6#
        • 2.e4#
      • 1...Kh5!
    • 1.Qh4+?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qh5#
        • 2.e4#
      • 1...Kxh4!
    • 1.Qh6+?
      • 1...Kf5
        • 2.Re7#
        • 2.Qf4#
        • 2.Qh5#
        • 2.Qg6#
      • 1...Kg4!
    • 1.Qh8?
      • 1...Kf5
        • 2.Qh5#
      • 1...Kg4!
  • Keys
    • 1.Qh1!
      • 1...Kg4
        • 2.Rg6#
      • 1...Kf5
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::R(C)
        • K(a);OGATE,P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::B(D)+R(C),DCHECK
      • K(a);P-FLIGHT::QAR2(B)
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