MESON Chess Problem Database

Problem Display
PID: 207718 (8/8/8/1K2Qp2/5p1q/3k4/4R3/8 w - - 0 1)

Thomas, Georg

Deutsche Schachblatter, 1951

8/8/8/1K2Qp2/5p1q/3k4/4R3/8

#2

3 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.Qe4+?
      • 1...Kc3
        • 2.Qc4#
      • 1...fxe4!
    • 1.Qc5?
      • threat
        • 2.Qc4#
      • 1...f3
        • 2.Qe3#
      • 1...Kxe2!
    • 1.Qd5+?
      • 1...Kc3
        • 2.Qc4#
      • 1...Kxe2!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...f3
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(b);N_GUARD::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • P(b);N_GUARD::QAR1(C)
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