MESON Chess Problem Database

Problem Display
PID: 12144 (2N5/8/8/3k4/K2N2P1/8/8/1Q6 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1975

2N5/8/8/3k4/K2N2P1/8/8/1Q6

#2

5 + 1

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Se2?
      • 1...Kc4
        • 2.Qb5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
  • Keys
    • 1.Se6!
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Kxe6
        • 2.Qf5#

Anticipated by 222935(1886), 175226(1902), 203213(1924), 227462(1926), 219854(1974)

This anticipates 50335(2003)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT,XS(C)::QAB1(A)
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