MESON Chess Problem Database

Problem Display
PID: 76531 (8/5R2/3NN1P1/3k4/K7/8/8/Q7 w - - 0 1)

Lupton, James Money-Kyrle

The Tablet, 1933

(First published on Sat Feb 25 1933)

8/5R2/3NN1P1/3k4/K7/8/8/Q7

#2

6 + 1

5454 Near Snap 2008

SOLUTION

  • SOUND
  • Tries
    • 1.Sc8?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Kc6
        • 2.Qh1#
      • 1...Kxe6!
    • 1.Sd8?
      • 1...Kxd6
        • 2.Qd4#
      • 1...Kc5!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Sd8#
        • 2.Rc7#
        • 2.Qc5#
      • 1...Kxe6!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Qc5#
      • 1...Kxe5!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Kc6
        • 2.Qh1#
      • 1...Kxe6
        • 2.Qe5#

Anticipated by 226440(1882), 31369(1883)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT,XS(C)::QAR1(A)
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT,XS(D)::QAR1(A)
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