MESON Chess Problem Database

Problem Display
PID: 265025 (8/5p1r/3NRP2/1K1k2N1/5Bq1/4Pp2/8/8 w - - 0 1)

Dragan, Nicholae A

Die Schwalbe, 1971

8/5p1r/3NRP2/1K1k2N1/5Bq1/4Pp2/8/8

#2

7 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sde4?
      • threat
        • 2.Sc3#
        • 2.Re5#
        • 2.Rd6#
      • 1...Qxe6
        • 2.Sc3#
      • 1...Qxf4
        • 2.Sc3#
      • 1...fxe6
        • 2.Sc3#
      • 1...Qf5
        • 2.Sc3#
        • 2.Rd6#
      • 1...Qxg5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se7#
        • 2.Re5#
        • 2.Rd6#
        • 2.e4#
      • 1...Qxf5
        • 2.Rd6#
      • 1...Qxf4
        • 2.Se7#
      • 1...Qxg5
        • 2.Re5#
      • 1...fxe6
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);XR(F)::S(E)
        • Q(b);XB(B)::S(E)
        • P(d);XR(F)::S(E)
      • Refutation
        • Q(b);XS(D)
  • Actual
    • S(E);
    • Threat
      • DUALS(4)
    • Vars
      • Q(b);XS(E)::R1(F)
      • Q(b);XB(B)::S(E)
      • Q(b);XS(D)::R1(F)
      • P(d);XR(F)::P(A)
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