MESON Chess Problem Database

Problem Display
PID: 79612 (3B2R1/5K2/8/5p1k/5p2/5n1p/4Q2n/8 w - - 0 1)

Hjelle, David

The Tablet, 1967

(First published on Sat Oct 28 1967)

3B2R1/5K2/8/5p1k/5p2/5n1p/4Q2n/8

#2

4 + 6

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Rh8#
  • Tries
    • 1.Rg5+?
      • 1...Kh4
        • 2.Qf2#
      • 1...Kh6!
    • 1.Rg6?
      • 1...Sf1
        • 2.Qxf3#
      • 1...Sg4!
    • 1.Qxf3+?
      • 1...Kh6
        • 2.Rh8#
        • 2.Qxh3#
      • 1...Sg4
        • 2.Rh8#
        • 2.Qxh3#
      • 1...Sxf3!
  • Keys
    • 1.Kg7!
      • 1...Kg4
        • 2.Kh6#
      • 1...Sf1
        • 2.Qxf3#
      • 1...Sg4
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINS(b),P-FLIGHT::R(D)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(f);N_SPINS(b),P-FLIGHT::QAB(A)
      • Refutation
        • K(f);N_SPINS(b),P-FLIGHT
    • Try
      • R(D);
      • Vars
        • S(a);N_GUARD::QAB(A),XS(b)
      • Refutation
        • S(a);N_SPINS(b)
    • Try
      • Q(A);CHECK,XS(b)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(f);S_FLIGHT::R(D)+K(B)
      • S(a);N_GUARD::QAB(A),XS(b)
      • S(a);N_SPINS(b),SBLOCK::QAB(A)
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