MESON Chess Problem Database

Problem Display
PID: 234529 (7Q/8/8/5K2/8/8/4k3/7R w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1975

7Q/8/8/5K2/8/8/4k3/7R

#2

3 + 1

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rh2+?
      • 1...Kd1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qa1#
      • 1...Kf1
        • 2.Qa1#
      • 1...Ke3
        • 2.Qc3#
      • 1...Kf3
        • 2.Qc3#
        • 2.Qh3#
      • 1...Kd3!
    • 1.Qb2+?
      • 1...Ke3
        • 2.Rh3#
      • 1...Kf3
        • 2.Rh3#
      • 1...Kd3!
  • Keys
    • 1.Ke4!
      • threat
        • 2.Qb2#
        • 2.Qh2#
      • 1...Kd2
        • 2.Qb2#
      • 1...Kf2
        • 2.Qh2#

Anticipated by 149369(1923)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR(C)
        • K(a);P-FLIGHT::QAR(C)
        • K(a);P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::R(A)
        • K(a);S_FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
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