MESON Chess Problem Database

Problem Display
PID: 153534 (5N2/8/4N1K1/2Pk4/1npB1Q2/2P5/5n2/8 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1948

5N2/8/4N1K1/2Pk4/1npB1Q2/2P5/5n2/8

#2

7 + 4

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qf3#
    • 1...Sh1
      • 2.Qf3#
    • 1...Sfd3
      • 2.Qf3#
    • 1...Sh3
      • 2.Qf3#
    • 1...Sg4
      • 2.Qf3#
    • 1...Sc6
      • 2.Sc7#
  • Tries
    • 1.Kf5?
      • threat
        • 2.Qd6#
      • 1...Se4
        • 2.Qxe4#
      • 1...Kc6!
    • 1.Sg5?
      • threat
        • 2.Qd6#
      • 1...Se4
        • 2.Qxe4#
      • 1...Kc6!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc6!
    • 1.Qxf2?
      • threat
        • 2.Qg2#
        • 2.Qf3#
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc6!
  • Keys
    • 1.Qf7!
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc6
        • 2.Qd7#
      • 1...Se4
        • 2.Sd8#
      • 1...Sd1
        • 2.Qf3#
      • 1...Sh1
        • 2.Qf3#
      • 1...Sfd3
        • 2.Qf3#
      • 1...Sh3
        • 2.Qf3#
      • 1...Sg4
        • 2.Qf3#
      • 1...Sa2
        • 2.Qb7#
      • 1...Sc2
        • 2.Qb7#
      • 1...Sbd3
        • 2.Qb7#
      • 1...Sa6
        • 2.Qb7#
      • 1...Sc6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(C)
    • S(b);SBLOCK::S(E)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAR1(C)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(C)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAB1(C)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(d);S_FLIGHT::QAB1(C)
      • S(a);SBLOCK::QAB(C)+S(E)
      • S(a);N_GUARD::QAB(C)
      • S(b);N_GUARD::QAB(C)
      • S(b);SBLOCK::QAB(C)+S(E)
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