MESON Chess Problem Database

Problem Display
PID: 71224 (7Q/N7/1pPkp3/1p2N3/1K2P3/8/8/8 w - - 0 1)

Mendes de Moraes Filho, Feliciano

Il Due Mosse, 1959

7Q/N7/1pPkp3/1p2N3/1K2P3/8/8/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.Sxb5#
    • 1...Ke7
      • 2.Sc8#
  • Tries
    • 1.Kc3?
      • 1...Kc5
        • 2.Qf8#
      • 1...Kc7
        • 2.Sxb5#
      • 1...Ke7
        • 2.Sc8#
      • 1...b4+!
    • 1.Kxb5?
      • 1...Ke7
        • 2.Sc8#
      • 1...Kc7!
    • 1.Sg6?
      • threat
        • 2.Qe5#
        • 2.Qb8#
        • 2.Qd8#
      • 1...e5
        • 2.Qxe5#
      • 1...Kc7!
    • 1.Sf7+?
      • 1...Kc7
        • 2.Qe5#
        • 2.Qc8#
        • 2.Qd8#
      • 1...Ke7!
    • 1.Qe8?
      • 1...Kc7
        • 2.Sxb5#
      • 1...Kxe5!
    • 1.Qf8+?
      • 1...Kc7
        • 2.Sxb5#
      • 1...Kxe5!
    • 1.c7?
      • 1...Ke7
        • 2.Sc8#
        • 2.Qd8#
        • 2.c8S#
      • 1...Kxc7!
  • Keys
    • 1.Sd7!
      • 1...Kc7
        • 2.Qb8#
      • 1...Ke7
        • 2.Qf8#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(E),XP(a)
    • K(c);S_FLIGHT::S(E)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(F)
        • K(c);S_FLIGHT::S(E),XP(a)
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Vars
        • K(c);S_FLIGHT::S(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Vars
        • P(d);::QAB1(F),XP(d)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(c);S_FLIGHT::S(E),XP(a)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT,XS(C)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(E),XP(a)
      • Refutation
        • K(c);S_FLIGHT,XS(C)
    • Try
      • P(D);
      • Refutation
        • K(c);S_FLIGHT,XP(D)
  • Actual
    • S(C);
    • Vars
      • K(c);S_FLIGHT::QAB1(F)
      • P(d);::QAB1(F),XP(d)
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