MESON Chess Problem Database

Problem Display
PID: 4598 (5K2/1Q6/8/4k3/3NN2P/8/3P4/8 w - - 0 1)

Liberali, Giuseppe

2nd Prize, Nuova Rivista degli Scacchi, 1881

5K2/1Q6/8/4k3/3NN2P/8/3P4/8

#2

6 + 1

5689 The Chess Monthly (Hoffer) 1882
3713 Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qe7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kf4!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxd5!
    • 1.Qd7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxe4!
  • Keys
    • 1.Sf6!
      • 1...Kxd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Qc7#
        • 2.Qb8#
      • 1...Kd6
        • 2.Qe7#
      • 1...Kxf6
        • 2.Qg7#

This anticipates 223290(1886)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT,XS(B)::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT,XS(B)::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
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