MESON Chess Problem Database

Problem Display
PID: 287176 (n1B2b2/2pR1P2/4kNKn/3pr1p1/1p6/3N4/8/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problem-Forum, 2008

n1B2b2/2pR1P2/4kNKn/3pr1p1/1p6/3N4/8/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bd6
      • 2.Rxc7#
    • 1...Be7
      • 2.Rxd5#
      • 2.Rd8#
    • 1...Bg7
      • 2.Sc5#
    • 1...Sg8
      • 2.fxg8Q#
      • 2.fxg8B#
    • 1...g4
      • 2.Sf4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Rxc7#
      • 1...Sb6
        • 2.Sxc7#
      • 1...c5
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
      • 1...c6
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
      • 1...d4!
    • 1.Sg8?
      • threat
        • 2.Rd8#
      • 1...Sxg8
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Sb6!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Sxf8#
      • 1...Bc5
        • 2.Sxc5#
      • 1...Bd6
        • 2.Rxc7#
      • 1...Be7
        • 2.Rd8#
      • 1...Bg7
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::S(A),XB(i)
    • B(i);SBLOCK::B(F)+R(D),XP(g)
    • B(i);N_GUARD::S(A)
    • S(f);OGATE::PXS(f)=Q
    • P(d);N_GUARD::S(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • B(F)+R(D),XP(g)
      • Vars
        • S(h);N_GUARD::S(B),XP(g)
      • Refutation
        • P(b);
    • Try
      • S(B);
      • Threat
        • B(F)+R(D)
      • Vars
        • S(f);OGATE,XS(B)::PXS(f)=Q
      • Refutation
        • S(h);
  • Actual
    • S(B);
    • Threat
      • S(B),XB(i)
    • Vars
      • B(i);N_GUARD::S(A),XB(i)
      • B(i);SBLOCK::B(F)+R(D),XP(g)
      • B(i);SBLOCK::B(F)+R(D)
      • B(i);N_GUARD::S(A)
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