MESON Chess Problem Database

Problem Display
PID: 219842 (2n5/2k5/K6R/4P3/3Q4/8/8/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1969

2n5/2k5/K6R/4P3/3Q4/8/8/8

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qa7+?
      • 1...Kd8
        • 2.Rh8#
      • 1...Sxa7!
    • 1.Qd7+?
      • 1...Kb8
        • 2.Qb7#
      • 1...Kxd7!
  • Keys
    • 1.Rh8!
      • 1...Kc6
        • 2.Rxc8#
      • 1...Kb8
        • 2.Qa7#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R(D)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • R(D);
    • Vars
      • K(a);P-FLIGHT::R(D),XS(b)
      • K(a);P_SPINS(b),S_FLIGHT::QAB1(A)
      • S(b);N_GUARD::QAB1(A)
      • S(b);N_GUARD::QAB1(A),XS(b)
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