MESON Chess Problem Database

Problem Display
PID: 93838 (8/1pp2P2/2P3Q1/r2k4/pP3K2/N1p5/8/7b w - - 0 1)

Maximov, Nikolai J

Ceske listy sachove, 1900

8/1pp2P2/2P3Q1/r2k4/pP3K2/N1p5/8/7b

#2

6 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kd6
        • 2.Sc4#
        • 2.f8Q#
        • 2.f8B#
      • 1...Bxe4!
    • 1.Qf5+?
      • 1...Kxc6
        • 2.Qe6#
      • 1...Kd6
        • 2.Qd7#
      • 1...Kd4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kxe6!
    • 1.f8Q?
      • threat
        • 2.Qd8#
      • 1...Ra8
        • 2.Qc5#
      • 1...Kd4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd7#
      • 1...Kd4
        • 2.Qd1#
      • 1...Kxc6
        • 2.Qe6#
      • 1...Kd6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • B(a);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);S_FLIGHT,XP(D)::QAR2(E)
        • K(e);P-FLIGHT::QAR1(E)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • K(e);S_FLIGHT,XQ(E)
    • Try
      • P(F);
      • Threat
        • QAR(F)
      • Vars
        • R(d);N_GUARD::QAR1(F)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(e);P-FLIGHT::QAR(E)
      • K(e);S_FLIGHT,XP(D)::QAR2(E)
      • K(e);P-FLIGHT::QAR1(E)
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