MESON Chess Problem Database

Problem Display
PID: 188542 (8/8/7Q/1K2kN2/3R4/6n1/8/5N2 w - - 0 1)

Birchmeier, Oskar

Schweizerische Schachzeitung, 1969

8/8/7Q/1K2kN2/3R4/6n1/8/5N2

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.S1e3?
      • threat
        • 2.Qd6#
      • 1...Se4
        • 2.Rd5#
      • 1...Sxf5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qd6#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Se4
        • 2.Rd5#
      • 1...Sf5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(E)
      • Vars
        • S(a);SBLOCK::R1(B)
      • Refutation
        • S(a);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);S_FLIGHT,XR(B)::QAB1(E)
      • S(a);SBLOCK::R1(B)
      • S(a);SBLOCK::S(D)
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