MESON Chess Problem Database

Problem Display
PID: 149037 (7n/2p2p2/N4Qp1/3k2P1/3p1K2/8/1NP5/8 w - - 0 1)

Dawson, Thomas Rayner

Chess Amateur (The), 1920

7n/2p2p2/N4Qp1/3k2P1/3p1K2/8/1NP5/8

#2

6 + 6

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.c4#
    • 1...c5
      • 2.Sc7#
    • 1...c6
      • 2.Qe5#
  • Tries
    • 1.Kf3?
      • 1...d3
        • 2.c4#
      • 1...c5
        • 2.Sc7#
      • 1...c6!
    • 1.Sa4?
      • 1...Kc4
        • 2.Qc6#
      • 1...c6
        • 2.Sb6#
      • 1...c5
        • 2.Sb6#
      • 1...d3!
    • 1.Sb8?
      • threat
        • 2.Qe5#
        • 2.Qc6#
      • 1...d3
        • 2.Qe5#
      • 1...c6
        • 2.Qe5#
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Qe7?
      • threat
        • 2.Sb4#
        • 2.Qd7#
      • 1...d3
        • 2.Qd7#
      • 1...c5
        • 2.Qd7#
      • 1...Kc6!
    • 1.Qd8+?
      • 1...Ke6
        • 2.Sc5#
        • 2.Sxc7#
      • 1...Kc6!
  • Keys
    • 1.Sc4!
      • 1...Kxc4
        • 2.Qc6#
      • 1...c6
        • 2.Sb6#
      • 1...d3
        • 2.Se3#
      • 1...c5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::P(B)
    • P(d);SBLOCK::S(E)
    • P(d);SBLOCK::QAR1(F)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(a);N_GUARD::P(B)
        • P(d);SBLOCK::S(E)
      • Refutation
        • P(d);
    • Try
      • S(A);
      • Vars
        • K(b);S_FLIGHT::QAR2(F)
        • P(d);N_GUARD::S(A)
      • Refutation
        • P(a);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAR2(F)
        • P(d);::QAR2(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(b);S_FLIGHT,XS(A)::QAR2(F)
      • P(d);N_GUARD::S(A)
      • P(a);N_GUARD::S(A)
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