MESON Chess Problem Database

Problem Display
PID: 273513 (7n/6K1/N3P3/4kpN1/2Q5/8/8/8 w - - 0 1)

Mendes de Moraes Filho, Feliciano

British Chess Magazine, 1934

7n/6K1/N3P3/4kpN1/2Q5/8/8/8

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qc5#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
    • 1...f4
      • 2.Qc5#
  • Tries
    • 1.Sb4?
      • 1...f4
        • 2.Qd5#
        • 2.Qc5#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Kd6!
    • 1.Sc7?
      • 1...f4
        • 2.Qd5#
        • 2.Qc5#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Kd6!
    • 1.Sb8?
      • 1...f4
        • 2.Qc5#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Kd6!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf4!
    • 1.Qc7+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd4!
  • Keys
    • 1.e7!
      • 1...Kd6
        • 2.Qe6#
      • 1...f4
        • 2.Qc5#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB1(A)
    • S(c);N_GUARD::S(B)
    • S(c);N_GUARD::S(B),XS(c)
    • P(b);SBLOCK::QAR2(A)
  • Tries
    • Try
      • S(C);
      • Vars
        • S(c);N_GUARD::S(B)
        • S(c);N_GUARD::S(B),XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • S(c);N_GUARD::S(B)
        • S(c);N_GUARD::S(B),XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • P(b);SBLOCK::QAR2(A)
        • S(c);N_GUARD::S(B)
        • S(c);N_GUARD::S(B),XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(A)
      • P(b);SBLOCK::QAR2(A)
      • S(c);N_GUARD::S(B)
      • S(c);N_GUARD::S(B),XS(c)
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