MESON Chess Problem Database

Problem Display
PID: 259562 (2K5/8/2NN4/3k4/p5P1/Q7/4P3/8 w - - 0 1)

Somma, Francesco

Xadrez Brasileiro, 1932

2K5/8/2NN4/3k4/p5P1/Q7/4P3/8

#2

6 + 2

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sb7?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kxc6
        • 2.Qc5#
      • 1...Ke6!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Qe5#
      • 1...Kxc5!
  • Keys
    • 1.Se4!
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kxc6
        • 2.Qc5#
      • 1...Ke6
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(B)
        • K(b);N_GUARD,S_FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
  • Actual
    • S(E);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB1(B)
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB1(B)
      • K(b);N_GUARD,S_FLIGHT,XS(D)::QAR1(B)
      • K(b);N_GUARD,S_FLIGHT::QAB(B)
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