MESON Chess Problem Database

Problem Display
PID: 219622 (8/4p1Q1/5p2/7p/6pk/8/6K1/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1977

8/4p1Q1/5p2/7p/6pk/8/6K1/8

#2

2 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qxg3#
    • 1...f5
      • 2.Qxe7#
    • 1...e5
      • 2.Qxf6#
    • 1...e6
      • 2.Qxf6#
  • Tries
    • 1.Qh6?
      • 1...g3
        • 2.Qf4#
      • 1...e5
        • 2.Qxf6#
      • 1...e6
        • 2.Qxf6#
      • 1...f5!
    • 1.Qg6?
      • 1...g3
        • 2.Qxg3#
      • 1...e5
        • 2.Qxf6#
      • 1...e6
        • 2.Qxf6#
      • 1...f5!
  • Keys
    • 1.Kh2!
      • 1...g3+
        • 2.Qxg3#
      • 1...f5
        • 2.Qxe7#
      • 1...e5
        • 2.Qxf6#
      • 1...e6
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAB1(B),XP(a)
    • P(d);OGATEB::QAB(B),XP(e)
    • P(e);N_GUARD::QAB(B),XP(d)
  • Tries
    • Try
      • Q(B);P_PINP(c)
      • Vars
        • P(a);OGATEB::QAR2(B)
        • P(e);N_GUARD::QAB(B),XP(d)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Vars
        • P(a);OGATE::QAB1(B),XP(a)
        • P(e);N_GUARD::QAB(B),XP(d)
      • Refutation
        • P(d);
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • P(a);CHECK,OGATE::QAB1(B),XP(a)
      • P(d);OGATEB::QAB(B),XP(e)
      • P(e);N_GUARD::QAB(B),XP(d)
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