MESON Chess Problem Database

Problem Display
PID: 132874 (8/8/8/8/8/3K4/2pp4/2kN3Q w - - 0 1)

Antipov, Viacheslav Pavlovich

Koster, 1985

8/8/8/8/8/3K4/2pp4/2kN3Q

#2

3 + 3

5454 Near Snap 2016

SOLUTION

  • SOUND
  • Tries
    • 1.Qc6?
      • threat
        • 2.Qxc2#
      • 1...Kxd1
        • 2.Qh1#
      • 1...Kb1!
    • 1.Qa8?
      • threat
        • 2.Qa1#
      • 1...Kxd1
        • 2.Qh1#
      • 1...Kb1!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qa1#
      • 1...Kb1
        • 2.Qb2#
      • 1...Kxd1
        • 2.Qh1#

This anticipates 159020(1985)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);P_PINP(b)
      • Threat
        • QAR1(B),XP(b)
      • Vars
        • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(A)::QAR(B)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(A)::QAR(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);OGATEB,P-FLIGHT,XS(A)::QAR(B)
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