MESON Chess Problem Database

Problem Display
PID: 139280 (5Q2/8/8/R7/8/1k6/4K3/8 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1966

5Q2/8/8/R7/8/1k6/4K3/8

#2

3 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Kd2?
      • 1...Kb2
        • 2.Qb4#
        • 2.Qb8#
      • 1...Kc4!
    • 1.Qb4+?
      • 1...Kc2
        • 2.Rc5#
      • 1...Kxb4!
  • Keys
    • 1.Rb5+!
      • 1...Ka2
        • 2.Qa8#
      • 1...Kc2
        • 2.Qc5#
        • 2.Qc8#
      • 1...Kc3
        • 2.Qc5#
      • 1...Ka4
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb4#
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::R(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • R(B);CHECK
    • Vars
      • K(a);S_FLIGHT::QAR(C)
      • K(a);P-FLIGHT::QAR2(C)
      • K(a);S_FLIGHT::QAR1(C)
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