MESON Chess Problem Database

Problem Display
PID: 6462 (n3b3/4Q3/2kP4/8/3K4/1R6/8/8 w - - 0 1)

Boswell, Edward

Svenska Dagbladet, 1929

n3b3/4Q3/2kP4/8/3K4/1R6/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
  • Tries
    • 1.Rb7?
      • 1...Bd7
        • 2.Qxd7#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Bh5
        • 2.Qd7#
      • 1...Bg6
        • 2.Qd7#
      • 1...Bf7
        • 2.Qd7#
      • 1...Sb6!
  • Keys
    • 1.d7!
      • threat
        • 2.dxe8Q#
        • 2.dxe8B#
        • 2.d8S#
      • 1...Kc7
        • 2.dxe8Q#
      • 1...Bxd7
        • 2.Qc5#
      • 1...Sb6
        • 2.d8S#
      • 1...Bh5
        • 2.d8S#
      • 1...Bg6
        • 2.d8S#
      • 1...Bf7
        • 2.d8S#
      • 1...Sc7
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(D)
    • S(b);N_GUARD::QAR1(D),XS(b)
  • Tries
    • Try
      • R(A);
      • Vars
        • B(c);N_GUARD::QAB1(D),XB(c)
        • S(b);N_GUARD::QAR1(D),XS(b)
        • B(c);N_GUARD::QAB1(D)
      • Refutation
        • S(b);
  • Actual
    • P(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);P-FLIGHT::PXB(c)=Q
      • B(c);SBLOCK,XP(C)::QAR1(D)
      • S(b);::P=S
      • B(c);::P=S
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