MESON Chess Problem Database

Problem Display
PID: 22547 (8/2R4n/7k/2Q4B/8/8/8/2K5 w - - 0 1)

Sorensen, Flemming Rosenberg

Thema Danicum, 1984

8/2R4n/7k/2Q4B/8/8/8/2K5

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Rg7?
      • threat
        • 2.Rg6#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qg5#
      • 1...Sf8
        • 2.Qg5#
      • 1...Kxg7!
    • 1.Qf5?
      • threat
        • 2.Rxh7#
        • 2.Qg6#
      • 1...Sg5
        • 2.Qg6#
      • 1...Sf6
        • 2.Qg6#
      • 1...Sf8!
  • Keys
    • 1.Be8!
      • threat
        • 2.Qh5#
      • 1...Sf6
        • 2.Qe3#
      • 1...Sg5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);
      • Threat
        • R1(D)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAR1(B)
      • Refutation
        • S(b);
  • Actual
    • B(C);
    • Threat
      • QAR1(B)
    • Vars
      • S(b);N_GUARD::QAB(B)
      • S(b);N_GUARD,SBLOCK::QAB(B)
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