MESON Chess Problem Database

Problem Display
PID: 171442 (4K3/4NQ2/4N3/4kP2/8/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1998

4K3/4NQ2/4N3/4kP2/8/8/8/8

#2

5 + 1

6490 yacpdb 2018
3713 Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qg6?
      • 1...Kd6
        • 2.Qg3#
      • 1...Ke4!
    • 1.Qg8?
      • 1...Kd6
        • 2.Qg3#
      • 1...Kf6
        • 2.Qg7#
        • 2.Qh8#
      • 1...Ke4!
    • 1.Qg7+?
      • 1...Kd6
        • 2.Qd4#
        • 2.Qg3#
      • 1...Ke4!
    • 1.Qh7?
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6
        • 2.Qg7#
        • 2.Qh8#
      • 1...Ke4!
  • Keys
    • 1.Qh5!
      • 1...Ke4
        • 2.Qe2#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6
        • 2.Qh8#

This anticipates 249668(2007)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT::QAR2(D)
      • K(a);S_FLIGHT::QAB(D)
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