MESON Chess Problem Database

Problem Display
PID: 149603 (5R2/1pk5/1p2K1p1/1p1PP3/2qp1B2/8/2Q5/8 w - - 0 1)

Dawson, Thomas Rayner

Pittsburgh Sun, 1921

(First published on Sat Nov 12 1921)

5R2/1pk5/1p2K1p1/1p1PP3/2qp1B2/8/2Q5/8

#2

6 + 7

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6+
      • 2.d6#
    • 1...b4
      • 2.Qxc4#
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Kf7?
      • threat
        • 2.e6#
      • 1...Kd7
        • 2.e6#
      • 1...g5!
  • Keys
    • 1.Kf6!
      • threat
        • 2.e6#
      • 1...Kd7
        • 2.e6#
      • 1...g5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(a);CHECK,N_PINP(C)::P(C)
    • P(c);N_GUARD::QAR(A),XQ(a)
    • P(e);OGATE::QAR(A)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • B(B)+P(D)
      • Vars
        • K(g);N_SPINQ(a),P-FLIGHT::P(D)
      • Refutation
        • P(e);
  • Actual
    • K(E);N_SPINP(C),P-FLIGHT
    • Threat
      • B(B)+P(D)
    • Vars
      • K(g);N_SPINQ(a),P-FLIGHT::P(D)
      • P(e);OGATE::QAR(A)
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