MESON Chess Problem Database

Problem Display
PID: 106765 (4Q3/8/8/P2p4/3k4/6P1/8/K4B2 w - - 0 1)

Thompson, SJ

The Field, 1955

(First published on Thu Jan 27 1955)

4Q3/8/8/P2p4/3k4/6P1/8/K4B2

#2

5 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kc5!
    • 1.Qe6?
      • 1...Kc5
        • 2.Qb6#
      • 1...Kc3!
  • Keys
    • 1.Qb8!
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke3
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf4#
      • 1...Kc5
        • 2.Qb6#

Anticipated by 31378(1883), 103452(1888), 193658(1915), 206705(1925)

This anticipates 99408(1995), 199902(2017), 217416(2020)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
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