MESON Chess Problem Database

Problem Display
PID: 151793 (8/3N4/1NkPp3/4Q3/8/2K5/8/8 w - - 0 1)

Alekseev, Yuri Mikhailovich

Uralski Problemist, 2011

8/3N4/1NkPp3/4Q3/8/2K5/8/8

#2

5 + 2

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4?
      • 1...Kb5
        • 2.Qa4#
      • 1...e5
        • 2.Qd5#
      • 1...Kb7!
    • 1.Qe4+?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kxd6!
  • Keys
    • 1.Qa5!
      • 1...Kxd6
        • 2.Qc5#
      • 1...Kb7
        • 2.Qa8#
      • 1...e5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • P(b);N_GUARD::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAB1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • P(b);N_GUARD::QAB1(B)
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