MESON Chess Problem Database

Problem Display
PID: 55557 (8/8/2PP1pp1/2BQ2n1/2KN1kp1/3R2p1/2PP1rn1/8 w - - 0 1)

Degener, Udo

Troll, 1992

8/8/2PP1pp1/2BQ2n1/2KN1kp1/3R2p1/2PP1rn1/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Se2#
    • 1...Re2
      • 2.Sxe2#
    • 1...Rf3
      • 2.Se2#
    • 1...Se3+
      • 2.dxe3#
    • 1...Sf3
      • 2.Se6#
    • 1...Sh3
      • 2.Se6#
    • 1...Se4
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sf7
      • 2.Se6#
    • 1...Sh7
      • 2.Se6#
  • Tries
    • 1.Rf3+?
      • 1...Rxf3
        • 2.Se2#
      • 1...Sxf3
        • 2.Se6#
      • 1...gxf3!
  • Keys
    • 1.d7!
      • threat
        • 2.Bd6#
      • 1...Se3+
        • 2.dxe3#
      • 1...Re2
        • 2.Sxe2#
      • 1...Sf3
        • 2.Se6#
      • 1...Se4
        • 2.Se6#
      • 1...Sf7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::S(E)
    • R(a);N_GUARD::S(E),XR(a)
    • S(b);CHECK,OGATE::P(B),XS(b)
    • S(f);N_GUARD::S(E)
    • S(f);N_GUARD::S(E),XS(f)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • R(a);XR(C)::S(E)
        • S(f);XR(C)::S(E)
      • Refutation
        • P(e);XR(C)
  • Actual
    • P(I);
    • Threat
      • B(F)
    • Vars
      • S(b);CHECK,OGATE::P(B),XS(b)
      • R(a);N_GUARD::S(E),XR(a)
      • S(f);N_GUARD::S(E)
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