MESON Chess Problem Database

Problem Display
PID: 76028 (8/1Q6/3N1P1P/1P2k3/7K/8/3PN3/8 w - - 0 1)

Lupton, James Money-Kyrle

The Tablet, 1925

(First published on Sat Aug 8 1925)

8/1Q6/3N1P1P/1P2k3/7K/8/3PN3/8

#2

8 + 1

5454 Near Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Qe4#
      • 1...Kxd6
        • 2.Qe7#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kxf6!
    • 1.d4+?
      • 1...Kxd6
        • 2.Qc6#
      • 1...Kxf6
        • 2.Qf7#
      • 1...Ke6!
  • Keys
    • 1.Sf4!
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxf4
        • 2.Qe4#
      • 1...Kxd6
        • 2.Qe7#
      • 1...Kxf6
        • 2.Qg7#

This anticipates 76207(1926), 79523(1940), 110513(1955), 78945(1960), 79229(1990), 103493(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(H)
        • K(a);S_FLIGHT,XS(E)::QAB1(H)
        • K(a);P-FLIGHT::QAR1(H)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • P(A);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAR1(H)
        • K(a);S_FLIGHT,XP(F)::QAR1(H)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);S_FLIGHT::QAR1(H)
      • K(a);S_FLIGHT,XS(B)::QAR1(H)
      • K(a);S_FLIGHT,XS(E)::QAB1(H)
      • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(H)
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