MESON Chess Problem Database

Problem Display
PID: 228740 (8/8/2Qn2R1/2B5/2k1P3/8/2K5/8 w - - 0 1)

Maleika, Gerhard

Deutsche Schachzeitung, 1985

8/8/2Qn2R1/2B5/2k1P3/8/2K5/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Qd5#
  • Tries
    • 1.Rg3?
      • threat
        • 2.Rc3#
      • 1...Sb5
        • 2.Qd5#
      • 1...Sxe4!
    • 1.Rg5?
      • threat
        • 2.Qa4#
      • 1...Sb5
        • 2.Qd5#
        • 2.Qe6#
      • 1...Sf5!
  • Keys
    • 1.Rg4!
      • 1...Sxe4
        • 2.Rxe4#
      • 1...Sf5
        • 2.exf5#
      • 1...Sb5
        • 2.Qd5#
      • 1...Sb7
        • 2.e5#
      • 1...Sf7
        • 2.e5#
      • 1...Sc8
        • 2.e5#
      • 1...Se8
        • 2.e5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB1(D)
  • Tries
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Vars
        • S(b);SBLOCK::QAB1(D)
      • Refutation
        • S(b);XP(B)
    • Try
      • R(E);
      • Threat
        • QAR2(D)
      • Refutation
        • S(b);
  • Actual
    • R(E);
    • Vars
      • S(b);OGATE,P_SPINS(b),XP(B)::R(E),XS(b)
      • S(b);OGATE::R(E)+P(B),XS(b)
      • S(b);SBLOCK::QAB1(D)
      • S(b);N_GUARD::R(E)+P(B)
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