MESON Chess Problem Database

Problem Display
PID: 249889 (8/8/4Q3/2r5/5kNP/2p5/3P3K/8 w - - 0 1)

Schlegel, Rudolf

Deutsche Schachzeitung, 1971

8/8/4Q3/2r5/5kNP/2p5/3P3K/8

#2

5 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf6?
      • threat
        • 2.Qe4#
      • 1...Kf3
        • 2.Qe3#
      • 1...Re5
        • 2.Qg4#
      • 1...Rc4!
    • 1.Sh6?
      • threat
        • 2.Qe3#
      • 1...Kf3
        • 2.Qe3#
      • 1...Re5
        • 2.Qg4#
      • 1...cxd2!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qe4#
      • 1...Kf3
        • 2.Qe3#
      • 1...Rc4
        • 2.Qf6#
      • 1...Re5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(E)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(E)
        • R(c);SBLOCK::QAR1(E)
      • Refutation
        • R(c);
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
        • R(c);SBLOCK::QAR1(E)
      • Refutation
        • P(a);XP(A)
  • Actual
    • S(C);
    • Threat
      • QAR1(E)
    • Vars
      • K(b);N_GUARD,P-FLIGHT::QAR1(E)
      • R(c);N_GUARD::QAR2(E)
      • R(c);SBLOCK::QAR1(E)
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