MESON Chess Problem Database

Problem Display
PID: 148869 (8/5R2/Q3P3/3pk2K/1P2p2N/8/3P4/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1950

8/5R2/Q3P3/3pk2K/1P2p2N/8/3P4/8

#2

7 + 3

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Rf5#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Sg6#
        • 2.Rf5#
      • 1...d4
        • 2.Rf5#
      • 1...e3!
    • 1.Qc6?
      • 1...Kd4
        • 2.Qc3#
      • 1...d4
        • 2.Sg6#
        • 2.Rf5#
      • 1...e3!
  • Keys
    • 1.Rf4!
      • 1...Kd4
        • 2.Sf3#
      • 1...Kxf4
        • 2.Qd6#
      • 1...e3
        • 2.Sg6#
      • 1...d4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::R1(G)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::R1(G)
      • Refutation
        • P(a);
    • Try
      • Q(E);
      • Vars
        • K(c);S_FLIGHT::QAB1(E)
      • Refutation
        • P(a);
  • Actual
    • R(G);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::S(C)
      • K(c);S_FLIGHT,XR(G)::QAB(E)
      • P(a);::S(C)
      • P(b);SBLOCK::R1(G)
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