MESON Chess Problem Database

Problem Display
PID: 42746 (1N6/8/8/1R6/k1n5/1RKn4/8/8 w - - 0 1)

Petkov, Petko Andonov

Shakhmatna misl, 1975

1N6/8/8/1R6/k1n5/1RKn4/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7?
      • 1...Sc1
        • 2.Sc5#
      • 1...Se1
        • 2.Sc5#
      • 1...Sdb2
        • 2.Sc5#
      • 1...Sf2
        • 2.Sc5#
      • 1...Sf4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sde5
        • 2.Sc5#
      • 1...Scb2
        • 2.Sb6#
      • 1...Sd2
        • 2.Sb6#
      • 1...Sa3
        • 2.Sb6#
      • 1...Se3
        • 2.Sb6#
      • 1...Sa5
        • 2.Sb6#
      • 1...Sce5
        • 2.Sb6#
      • 1...Sb6
        • 2.Sxb6#
      • 1...Sd6
        • 2.Sb6#
      • 1...Sb4!
  • Keys
    • 1.Sc6!
      • 1...Sb4
        • 2.R5xb4#
      • 1...Sc1
        • 2.R5b4#
      • 1...Se1
        • 2.R5b4#
      • 1...Sdb2
        • 2.R5b4#
      • 1...Sf2
        • 2.R5b4#
      • 1...Sf4
        • 2.R5b4#
      • 1...Sc5
        • 2.R5b4#
      • 1...Sde5
        • 2.R5b4#
      • 1...Scb2
        • 2.Ra5#
      • 1...Sd2
        • 2.Ra5#
      • 1...Sa3
        • 2.Ra5#
      • 1...Se3
        • 2.Ra5#
      • 1...Sa5
        • 2.Rxa5#
      • 1...Sce5
        • 2.Ra5#
      • 1...Sb6
        • 2.Ra5#
      • 1...Sd6
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • S(a);N_GUARD::S(D)
        • S(a);N_GUARD::S(D),XS(a)
        • S(c);N_GUARD::S(D)
        • S(c);N_GUARD::S(D),XS(c)
      • Refutation
        • S(a);
  • Actual
    • S(D);
    • Vars
      • S(a);N_GUARD::R1(C),XS(a)
      • S(a);N_GUARD::R1(C)
      • S(c);N_GUARD::R1(C)
      • S(c);N_GUARD::R1(C),XS(c)
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