MESON Chess Problem Database

Problem Display
PID: 80335 (1b6/1K2Q3/8/2pk4/3P4/1P3n2/2B3b1/3N2q1 w - - 0 1)

Brummelman, Derk Hendrikus (AKA Bruma, DH)

Schaakmat, 1953

1b6/1K2Q3/8/2pk4/3P4/1P3n2/2B3b1/3N2q1

#2

6 + 6

5227 Schaak..., maar raak! 1969

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qe4#
    • 1...Bd6
      • 2.Qe4#
    • 1...Ba7
      • 2.Qd7#
    • 1...Sxd4
      • 2.Sc3#
    • 1...cxd4
      • 2.Be4#
  • Tries
    • 1.Qe6+?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kxe6!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Qxc5#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Qxd4
        • 2.Qe6#
      • 1...Sxd4
        • 2.Sc3#
      • 1...cxd4
        • 2.Be4#
      • 1...Bd6
        • 2.Qe4#
      • 1...Ba7
        • 2.Qd8#
        • 2.Qd7#
      • 1...c4
        • 2.Qc5#

FEATURES

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