MESON Chess Problem Database

Problem Display
PID: 273889 (5b2/4p3/2K5/4N3/3pk3/3pN1Q1/8/7b w - - 0 1)

Pedler, Fred

The Problemist, 1932

5b2/4p3/2K5/4N3/3pk3/3pN1Q1/8/7b

#2

4 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.S5c4?
      • threat
        • 2.Sd2#
        • 2.Qg4#
      • 1...dxe3
        • 2.Qg4#
      • 1...Bf3
        • 2.Qe5#
      • 1...Bh6
        • 2.Sd2#
      • 1...d2!
    • 1.S5g4?
      • threat
        • 2.Sf2#
      • 1...Bf3
        • 2.Qe5#
      • 1...dxe3!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sc5#
      • 1...dxe3
        • 2.Qg4#
      • 1...Bf3
        • 2.Qe5#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(A)::QAR2(B)
        • B(a);SBLOCK::QAR1(B)
        • B(f);::S(C)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • B(a);SBLOCK::QAR1(B)
      • Refutation
        • P(c);XS(A)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • P(c);SBLOCK,XS(A)::QAR2(B)
      • B(a);SBLOCK::QAR1(B)
      • P(e);N_GUARD::S(C)
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