MESON Chess Problem Database

Problem Display
PID: 171325 (4N3/1N1k4/B5KQ/8/5p2/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1994

4N3/1N1k4/B5KQ/8/5p2/8/8/8

#2

5 + 2

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5?
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Sc5#
      • 1...Kc8
        • 2.Qd8#
      • 1...Kxe8
        • 2.Qd8#
      • 1...f3!
    • 1.Qg7+?
      • 1...Ke6
        • 2.Sc7#
        • 2.Bc4#
      • 1...Kc8
        • 2.Qc7#
      • 1...Kxe8
        • 2.Bb5#
        • 2.Qf7#
      • 1...Kc6!
  • Keys
    • 1.Qxf4!
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...Ke7
        • 2.Qf7#
      • 1...Kc8
        • 2.Qc7#
      • 1...Kxe8
        • 2.Qf7#

Anticipated by 76747(1944), 136532(1987), 79850(1991)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::QAR1(C)
        • K(b);S_FLIGHT,XS(E)::QAR1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);XP(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT,XS(E)::QAB1(C)
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