MESON Chess Problem Database

Problem Display
PID: 89803 (4n3/8/1RQ2RK1/4k3/8/8/8/8 w - - 0 1)

Fiedler, Frank

Die Schwalbe, 1997

4n3/8/1RQ2RK1/4k3/8/8/8/8

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rb4?
      • threat
        • 2.Re4#
        • 2.Rf5#
        • 2.Re6#
        • 2.Qe4#
        • 2.Qb5#
        • 2.Qc5#
        • 2.Qe6#
      • 1...Sd6
        • 2.Qc5#
        • 2.Qxd6#
      • 1...Sc7
        • 2.Re4#
        • 2.Rf5#
        • 2.Qe4#
        • 2.Qd6#
      • 1...Sg7
        • 2.Re4#
        • 2.Qe4#
        • 2.Qb5#
        • 2.Qc5#
        • 2.Qd6#
      • 1...Sxf6!
    • 1.Rf4?
      • threat
        • 2.Re4#
        • 2.Qe4#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sf6
        • 2.Qd6#
      • 1...Kxf4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Rb5#
        • 2.Rbe6#
        • 2.Rf5#
        • 2.Rfe6#
      • 1...Sxf6
        • 2.Re6#
      • 1...Sd6
        • 2.Re6#
      • 1...Sc7
        • 2.Rf5#
      • 1...Sg7
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(7)
      • Refutation
        • S(b);XR(C)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::QAB1(B),XS(b)
        • S(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • Q(B);
    • Threat
      • DUALS(4)
    • Vars
      • S(b);XR(C)::R1(A)
      • S(b);::R1(C)
      • S(b);::R(A)
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