MESON Chess Problem Database

Problem Display
PID: 87700 (8/8/4K3/6k1/3Q1N2/8/5P2/8 w - - 0 1)

Nikitin, Vladimir V

Uralski Problemist, 2000

8/8/4K3/6k1/3Q1N2/8/5P2/8

#2

4 + 1

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3?
      • 1...Kg4
        • 2.Qg3#
      • 1...Kh4
        • 2.Qg3#
      • 1...Kh6!
    • 1.Qg7+?
      • 1...Kh4
        • 2.Qg3#
      • 1...Kxf4!
  • Keys
    • 1.Qd3!
      • 1...Kxf4
        • 2.Qf5#
      • 1...Kg4
        • 2.Qg3#
      • 1...Kh4
        • 2.Qg3#
      • 1...Kh6
        • 2.Qg6#

Anticipated by 95181(1987)

FEATURES

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