MESON Chess Problem Database

Problem Display
PID: 82358 (3R4/3n1Q2/R2Nr3/4kNpp/5n2/p3P3/br2P2K/B6B w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Report/Deutsche Schachblatter, 1995

3R4/3n1Q2/R2Nr3/4kNpp/5n2/p3P3/br2P2K/B6B

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Qf5#
      • 1...Rf6
        • 2.Sf3#
      • 1...Bb1
        • 2.Sc4#
      • 1...Sf6!
    • 1.Se7?
      • threat
        • 2.Qf5#
      • 1...Sf6
        • 2.Sc6#
      • 1...Bb1
        • 2.Sc4#
      • 1...Rf6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf5#
      • 1...Rxe2+
        • 2.Sxe2#
      • 1...Rb6
        • 2.S4b5#
      • 1...Rf6
        • 2.Sf3#
      • 1...Bb1
        • 2.Sc4#
      • 1...Sf6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(H)
    • B(a);N_GUARD::S(H),XB(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(I)
      • Vars
        • R(h);::S(F)
        • B(a);N_GUARD::S(H)
      • Refutation
        • S(i);
    • Try
      • S(F);
      • Threat
        • QAR1(I)
      • Vars
        • S(i);::S(F)
        • B(a);N_GUARD::S(H)
      • Refutation
        • R(h);
  • Actual
    • S(F);N_PINR(b)
    • Threat
      • QAR1(I)
    • Vars
      • R(b);CHECK,XP(C)::B(A)+S(F),XR(b)
      • R(b);N_PINP(C)::B(A)+S(F)
      • R(h);::S(F)
      • B(a);N_GUARD::S(H)
      • S(i);::S(F)
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