MESON Chess Problem Database

Problem Display
PID: 118734 (8/8/6N1/1p2R3/1PNk4/8/2K5/8 w - - 0 1)

Stepanov, Petr Aleksandrovich

Na Smenu!, 1984

8/8/6N1/1p2R3/1PNk4/8/2K5/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • 1...Kxc4
        • 2.Re4#
      • 1...bxc4!
    • 1.Sh4?
      • 1...bxc4
        • 2.Sf3#
      • 1...Kxc4!
  • Keys
    • 1.Se7!
      • 1...Kxc4
        • 2.Re4#
      • 1...bxc4
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT,XS(C)::R(D)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(E);
      • Vars
        • P(b);SBLOCK,XS(C)::S(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(E);
    • Vars
      • K(a);P-FLIGHT,XS(C)::R(D)
      • P(b);SBLOCK,XS(C)::S(E)
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