MESON Chess Problem Database

Problem Display
PID: 136473 (2N5/4Pk2/8/6P1/5K2/8/8/7Q w - - 0 1)

Nikitin, Vladimir V

Neue Osnabrucker Zeitung, 1999

2N5/4Pk2/8/6P1/5K2/8/8/7Q

#2

5 + 1

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.e8Q#
  • Tries
    • 1.Qh6?
      • 1...Kg8
        • 2.e8Q#
      • 1...Ke8!
    • 1.Qh7+?
      • 1...Ke6
        • 2.Qf5#
      • 1...Ke8!
    • 1.Qh8?
      • threat
        • 2.e8Q#
      • 1...Kg6
        • 2.e8Q#
        • 2.e8B#
      • 1...Ke6!
    • 1.e8Q+?
      • 1...Kg7
        • 2.Qb7#
        • 2.Qh6#
        • 2.Qhh8#
      • 1...Kxe8!
  • Keys
    • 1.Qb7!
      • 1...Ke6
        • 2.e8Q#
        • 2.e8R#
      • 1...Kg6
        • 2.e8Q#
        • 2.e8B#
      • 1...Kg7
        • 2.e8Q#
      • 1...Ke8
        • 2.Sd6#
      • 1...Kg8
        • 2.e8Q#
        • 2.e8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::P=Q
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • P=Q
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::P=Q
      • K(a);P-FLIGHT::P=Q
      • K(a);S_FLIGHT::S(E)
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