MESON Chess Problem Database

Problem Display
PID: 28296 (8/8/4p1pR/4PNn1/3p2k1/3K2P1/6Q1/8 w - - 0 1)

Brede, Ferdinand Julius

Source?, 0000

8/8/4p1pR/4PNn1/3p2k1/3K2P1/6Q1/8

#2

6 + 5

3242 BCPS Rapid Solving (Cheltenham) 2001
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...exf5
      • 2.Rh4#
    • 1...gxf5
      • 2.Rh4#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxf5
        • 2.Qf4#
      • 1...Sh3!
  • Keys
    • 1.Rh5!
      • 1...Kxf5
        • 2.Qe4#
      • 1...Kxh5
        • 2.g4#
      • 1...exf5
        • 2.Rh4#
      • 1...gxf5
        • 2.Rh4#
      • 1...gxh5
        • 2.Sh6#
      • 1...Sf3
        • 2.Qh3#
      • 1...Sh3
        • 2.Qe2#
      • 1...Se4
        • 2.Qe2#
      • 1...Sf7
        • 2.Qe2#
      • 1...Sh7
        • 2.Qe2#

This anticipates 156399(1904)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK,XS(E)::R1(F)
    • P(e);SBLOCK,XS(E)::R1(F)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • K(b);S_FLIGHT,XS(E)::QAR1(A)
      • Refutation
        • S(c);
  • Actual
    • R(F);
    • Vars
      • K(b);P_SPINS(c),S_FLIGHT,XS(E)::QAB1(A)
      • K(b);OGATE,S_FLIGHT,XR(F)::P(C)
      • P(d);SBLOCK,XS(E)::R1(F)
      • P(e);SBLOCK,XS(E)::R1(F)
      • P(e);SBLOCK,XR(F)::S(E)
      • S(c);N_GUARD,SBLOCK::QAB1(A)
      • S(c);N_GUARD::QAB(A)
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