MESON Chess Problem Database

Problem Display
PID: 233271 (8/r4n2/3bp3/p2Nk2K/8/1bP2QPp/5n2/8 w - - 0 1)

Muller, Dieter

Freie Presse, 1985

8/r4n2/3bp3/p2Nk2K/8/1bP2QPp/5n2/8

#2

5 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Qf4#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qf4#
      • 1...Bd1
        • 2.Sc4#
      • 1...Sd3!
    • 1.Sf6?
      • threat
        • 2.Qf4#
      • 1...Sd3
        • 2.Sg4#
      • 1...Bd1!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qf4#
      • 1...Bd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XS(D)::QAB1(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • B(b);N_GUARD,P_PINQ(B)::S(D)
      • Refutation
        • S(a);
    • Try
      • S(D);
      • Threat
        • QAB1(B)
      • Vars
        • S(a);N_GUARD::S(D)
      • Refutation
        • B(b);P_PINQ(B)
  • Actual
    • S(D);
    • Threat
      • QAB1(B)
    • Vars
      • B(b);N_GUARD,P_PINQ(B)::S(D)
      • S(a);N_GUARD::S(D)
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