MESON Chess Problem Database

Problem Display
PID: 274678 (5K2/3b4/3N4/1pQpkpB1/3N2p1/8/4P3/8 w - - 0 1)

Hasenzahl, Karl

To Mat, 1956

5K2/3b4/3N4/1pQpkpB1/3N2p1/8/4P3/8

#2

6 + 6

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Sc6#
  • Tries
    • 1.S4xf5?
      • threat
        • 2.Qe3#
      • 1...Ke6
        • 2.Qe3#
      • 1...Bxf5!
    • 1.e4?
      • threat
        • 2.Qxd5#
      • 1...fxe4
        • 2.Sf7#
      • 1...Be6
        • 2.Sc6#
      • 1...Bc6!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Bf6#
        • 2.Qe3#
      • 1...Kxd6
        • 2.Bf4#
      • 1...f4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD,SBLOCK::S(B)
  • Tries
    • Try
      • S(B);XP(e)
      • Threat
        • QAR2(C)
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT::QAR(C)
      • Refutation
        • B(f);XS(B)
    • Try
      • P(A);
      • Threat
        • QAR1(C),XP(c)
      • Vars
        • P(e);SBLOCK,XP(A)::S(E)
        • B(f);N_GUARD,SBLOCK::S(B)
      • Refutation
        • B(f);
  • Actual
    • Q(C);N_PINP(c)
    • Threat
      • QAB1(C)
    • Vars
      • K(d);N_GUARD,S_FLIGHT,XS(E)::B(D)
      • P(e);::QAB1(C),XP(e)
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