MESON Chess Problem Database

Problem Display
PID: 178034 (8/3p4/3p1K2/N2k1P2/1P1p4/8/4Q3/7b w - - 0 1)

Mendes de Moraes Filho, Feliciano

Busmen's Chess Review, 1964

8/3p4/3p1K2/N2k1P2/1P1p4/8/4Q3/7b

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Qxg2#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Be4
      • 2.Qc4#
      • 2.Qb5#
      • 2.Qa2#
    • 1...d3
      • 2.Qxd3#
  • Tries
    • 1.Qf1?
      • threat
        • 2.Qxh1#
      • 1...d3
        • 2.Qxd3#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Be4
        • 2.Qc4#
        • 2.Qb5#
      • 1...Ke4!
    • 1.Qd3?
      • 1...Bf3
        • 2.Qxf3#
      • 1...Be4
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qb3#
      • 1...Bg2!
    • 1.Qa6?
      • threat
        • 2.Qb7#
        • 2.Qa8#
      • 1...d3
        • 2.Qxd3#
        • 2.Qc4#
      • 1...Ke4!
    • 1.Qc2?
      • 1...d3
        • 2.Qxd3#
        • 2.Qc4#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Be4
        • 2.Qb3#
        • 2.Qa2#
        • 2.Qc4#
      • 1...Bf3!
  • Keys
    • 1.Qg4!
      • 1...Bg2
        • 2.Qxg2#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Be4
        • 2.Qg8#
      • 1...d3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • P(b);OGATEB::QAR2(A),XP(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A),XB(a)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • B(a);N_GUARD::QAB(A),XB(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);P_PINP(b)
      • Vars
        • B(a);N_GUARD::QAB(A),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD::QAB(A),XB(a)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Vars
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);SBLOCK::QAB(A)
      • P(b);OGATE::QAB1(A)
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