MESON Chess Problem Database

Problem Display
PID: 52871 (8/1p6/1R1p4/n2pk1K1/3N4/N1QP4/8/8 w - - 0 1)

Pelle, Charles

Source?, 1946

8/1p6/1R1p4/n2pk1K1/3N4/N1QP4/8/8

#2

6 + 5

785 Het Belgisch Schaakbord (L'Echiquier Belge) 1948

SOLUTION

  • SOUND
  • Tries
    • 1.Rb5?
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sb3
        • 2.Sc4#
      • 1...Sc6
        • 2.Sc4#
      • 1...b6!
    • 1.Qd2?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sc4
        • 2.Qf4#
      • 1...Kxd4!
    • 1.Qc1?
      • threat
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sc4
        • 2.Qf4#
      • 1...Kxd4!
  • Keys
    • 1.Qc5!
      • 1...dxc5
        • 2.Sf3#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sb3
        • 2.Sc4#
      • 1...Sc6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);P_PINP(b)
      • Vars
        • S(a);N_GUARD::S(A),XS(a)
        • S(a);N_GUARD::S(A)
      • Refutation
        • P(e);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT,XS(D)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT,XS(D)
  • Actual
    • Q(B);P_PINP(b)
    • Vars
      • P(d);N_SPINP(b),XQ(B)::S(D)
      • S(a);N_GUARD::S(A),XS(a)
      • S(a);N_GUARD::S(A)
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