MESON Chess Problem Database

Problem Display
PID: 6796 (rn2kN2/p3PRp1/3pP1Bq/1p1P3r/5Q1B/6p1/8/6K1 w q - 0 1)

Dawson, Thomas Rayner

Social Chess Quarterly (The), 1933

rn2kN2/p3PRp1/3pP1Bq/1p1P3r/5Q1B/6p1/8/6K1

#2

9 + 10

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Rxf4#
      • 2.Rf5#
    • 1...Qh8
      • 2.Rf5#
      • 2.Rxg7#
    • 1...Sd7
      • 2.exd7#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Qd8#
      • 1...Qc1+
        • 2.Rf1#
      • 1...Qe3+
        • 2.Rf2#
      • 1...Sa6
        • 2.Qc6#
        • 2.Qd7#
      • 1...Sc6
        • 2.Qxc6#
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
        • 2.exd7#
      • 1...Rxd5!
    • 1.Qc4?
      • threat
        • 2.Qc8#
      • 1...Qc1+
        • 2.Rf1#
      • 1...Qe3+
        • 2.Rf2#
      • 1...Sa6
        • 2.Qxb5#
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd7
        • 2.exd7#
      • 1...bxc4!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc8#
      • 1...Qxc1+
        • 2.Rf1#
      • 1...Qe3+
        • 2.Rf2#
      • 1...Sa6
        • 2.Qc6#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd7
        • 2.exd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(i);OGATE::P(E),XS(i)
  • Tries
    • Try
      • Q(B);XP(d)
      • Threat
        • QAR1(B)
      • Vars
        • Q(e);CHECK,N_GUARD::B(F)+R(H)
      • Refutation
        • R(c);XP(D)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • Q(e);CHECK,N_GUARD::B(F)+R(H)
        • S(i);N_GUARD::QAB(B),XS(i)
        • S(i);OGATE::P(E),XS(i)
      • Refutation
        • P(b);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • Q(e);CHECK,N_GUARD,XQ(B)::B(F)+R(H)
      • Q(e);CHECK,N_GUARD::B(F)+R(H)
      • S(i);N_GUARD::QAB(B)
      • S(i);N_GUARD::QAB(B),XS(i)
      • S(i);OGATE::P(E),XS(i)
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