MESON Chess Problem Database

Problem Display
PID: 21765 (2N2R2/2p2P1b/2p2k1B/2N2p2/5Q2/8/1p6/bK6 w - - 0 1)

Rudd, Charles Dember

Deaf Times, 1921

2N2R2/2p2P1b/2p2k1B/2N2p2/5Q2/8/1p6/bK6

#2

7 + 7

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Kg6
      • 2.Qg5#
    • 1...Bg6
      • 2.Qd4#
    • 1...Bg8
      • 2.fxg8Q#
      • 2.fxg8R#
  • Tries
    • 1.Se4+?
      • 1...Kg6
        • 2.Qg5#
      • 1...Ke6!
    • 1.Sd7+?
      • 1...Kg6
        • 2.Qg5#
      • 1...Ke6!
    • 1.Bg7+?
      • 1...Kg6
        • 2.Qh6#
      • 1...Kxg7!
    • 1.Qe3?
      • threat
        • 2.Qe6#
      • 1...Kg6
        • 2.Qg5#
      • 1...f4+!
    • 1.Qg3?
      • threat
        • 2.Bg7#
        • 2.Qg7#
      • 1...Bg6
        • 2.Qc3#
      • 1...f4+!
    • 1.Qh4+?
      • 1...Kg6
        • 2.Se7#
        • 2.Qg5#
      • 1...Ke5!
  • Keys
    • 1.Se7!
      • 1...Kxe7
        • 2.Qe5#
      • 1...Bg6
        • 2.Sg8#
      • 1...Bg8
        • 2.fxg8S#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);N_SPINP(c),P-FLIGHT::QAR1(B)
    • B(g);SBLOCK::QAB(B)
    • B(g);OGATE::PXB(g)=Q
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT::QAR1(B)
      • Refutation
        • K(e);N_SPINP(c),P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT::QAR1(B)
      • Refutation
        • K(e);N_SPINP(c),P-FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT::QAR1(B)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT,XB(D)
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • QAR1(B)
      • Vars
        • K(e);P-FLIGHT::QAR1(B)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);SBLOCK::QAB(B)
      • Refutation
        • P(c);CHECK
    • Try
      • Q(B);CHECK,N_PINP(c)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(e);N_SPINP(c),S_FLIGHT,XS(F)::QAR2(B)
      • B(g);N_GUARD,SBLOCK::S(F)
      • B(g);OGATE::PXB(g)=S
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