MESON Chess Problem Database

Problem Display
PID: 79334 (1K1Q4/8/8/2N1k3/1B5N/8/5P2/8 w - - 0 1)

Asaulenko, Ivan

4th HM., Nikolaev-200 JT, 1988

1K1Q4/8/8/2N1k3/1B5N/8/5P2/8

#2

6 + 1

5454 Near Snap 2016
145 StrateGems 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kf4!
    • 1.Se6?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kxe6!
    • 1.Qd3?
      • 1...Kf4
        • 2.Qf5#
        • 2.Qg3#
      • 1...Kf6!
    • 1.Qd7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
  • Keys
    • 1.Qg8!
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qe6#
      • 1...Kf6
        • 2.Sd7#

Anticipated by 158952(1976)

This anticipates 215294(1999)

FEATURES

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