MESON Chess Problem Database

Problem Display
PID: 147626 (8/8/B2pp3/R2nk2K/4pR1N/8/3P1rpQ/8 w - - 0 1)

Dawson, Thomas Rayner

Yorkshire Weekly Post, 1909

(First published on Sat Dec 11 1909)

8/8/B2pp3/R2nk2K/4pR1N/8/3P1rpQ/8

#2

7 + 7

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Sg6#
      • 2.d4#
  • Tries
    • 1.Sf3+?
      • 1...exf3
        • 2.d4#
      • 1...Rxf3!
    • 1.d4+?
      • 1...exd4 ep
        • 2.Sg6#
      • 1...Kxd4!
  • Keys
    • 1.Qg1!
      • 1...Kd4
        • 2.Sf3#
      • 1...Kxf4
        • 2.Qh2#
      • 1...Rxd2
        • 2.Sg6#
      • 1...Rxf4
        • 2.Qa1#
      • 1...Rf1
        • 2.Sg6#
      • 1...Re2
        • 2.Sg6#
      • 1...Rf3
        • 2.Sg6#
      • 1...e3
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • P(c);XS(D)::P(A)
      • Refutation
        • R(a);XS(D)
    • Try
      • P(A);CHECK
      • Vars
        • P(c);EP,XP(A)::S(D)
      • Refutation
        • K(e);N_SPINS(d),P_SPINP(c),S_FLIGHT,XP(A)
  • Actual
    • Q(B);
    • Vars
      • K(e);N_SPINS(d),P_SPINP(c),P_SPINR(a),S_FLIGHT::S(D)
      • K(e);N_SPINS(d),OGATEB,S_FLIGHT,XR(C)::QAB(B)
      • R(a);XP(A)::S(D)
      • R(a);SBLOCK,XR(C)::QAB(B)
      • R(a);::S(D)
      • P(c);::S(D)
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