MESON Chess Problem Database

Problem Display
PID: 10640 (1BBk4/4n3/K5n1/8/2Q5/8/8/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Revista de Sah, 1966

1BBk4/4n3/K5n1/8/2Q5/8/8/8

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qg8+?
      • 1...Sf8
        • 2.Qxf8#
      • 1...Sxg8!
  • Keys
    • 1.Qf7!
      • 1...Kxc8
        • 2.Qe8#
      • 1...Sxc8
        • 2.Bc7#
      • 1...Sf4
        • 2.Qf8#
      • 1...Sh4
        • 2.Qf8#
      • 1...Se5
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qf8#
      • 1...Sd5
        • 2.Qd7#
      • 1...Sf5
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sg8
        • 2.Qd7#

This anticipates 171451(1998)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR2(A),XS(a)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT,XB(D)::QAR2(A)
      • S(b);SBLOCK,XB(D)::B(C)
      • S(a);N_GUARD::QAR2(A)
      • S(a);N_GUARD::QAR2(A),XS(a)
      • S(b);OGATE::QAR1(A)
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