MESON Chess Problem Database

Problem Display
PID: 219828 (8/1Q6/1p6/k7/8/2K5/8/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1977

8/1Q6/1p6/k7/8/2K5/8/8

#2

2 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qa6#
    • 1...b5
      • 2.Qa7#
  • Tries
    • 1.Kb3?
      • 1...b5
        • 2.Qa7#
      • 1...Kb5!
    • 1.Qxb6+?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa6#
      • 1...Kxb6!
    • 1.Qd7?
      • 1...b5
        • 2.Qa7#
      • 1...Ka6!
  • Keys
    • 1.Kc4!
      • threat
        • 2.Qa8#
        • 2.Qa7#
      • 1...b5+
        • 2.Qxb5#
      • 1...Ka4
        • 2.Qa6#
        • 2.Qa8#
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
    • P(b);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b)
    • Try
      • Q(B);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,OGATE::QAR1(B),XP(b)
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