MESON Chess Problem Database

Problem Display
PID: 133964 (Q7/8/1K6/4p3/2pk4/5R2/8/8 w - - 0 1)

Brotherton, David WA

The Field, 1963

(First published on Thu Jun 13 1963)

Q7/8/1K6/4p3/2pk4/5R2/8/8

#2

3 + 3

5454 Near Snap 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Re3?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Kxe3!
    • 1.Qc6?
      • 1...e4
        • 2.Qc5#
        • 2.Qd6#
      • 1...c3!
  • Keys
    • 1.Kc6!
      • 1...Ke4
        • 2.Kc5#
      • 1...c3
        • 2.Qa4#
      • 1...e4
        • 2.Qh8#

Anticipated by 4502(1871), 79928(1961)

This anticipates 79166(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);::QAR1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(C);
      • Refutation
        • P(a);
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(b);P-FLIGHT::QAB(C)+K(B)
      • P(a);OGATEB::QAR(C)
      • P(c);OGATEB,SBLOCK::QAB(C)
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