MESON Chess Problem Database

Problem Display
PID: 229385 (7Q/8/4p3/8/1Nk5/3N1P2/3K4/8 w - - 0 1)

Tsaplin, Aleksandr Borisovich

Sachova skladba, 1987

7Q/8/4p3/8/1Nk5/3N1P2/3K4/8

#2

5 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • 1...Kb3
        • 2.Qa2#
      • 1...Kb5
        • 2.Qa6#
      • 1...e5!
    • 1.Qc8+?
      • 1...Kd4
        • 2.Qc3#
        • 2.Qc5#
      • 1...Kb5
        • 2.Qa6#
      • 1...Kb3!
  • Keys
    • 1.Qa8!
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kb5
        • 2.Qa6#
      • 1...e5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • P(b);N_GUARD::QAB1(E)
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