MESON Chess Problem Database

Problem Display
PID: 162181 (2b3QB/K3N1rn/p1p3r1/3N4/3kpP2/2R5/1P6/n7 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schach-Echo, 1987

2b3QB/K3N1rn/p1p3r1/3N4/3kpP2/2R5/1P6/n7

#2

8 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Sf5#
    • 1...cxd5
      • 2.Qxd5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qc4#
      • 1...Re6
        • 2.Sf5#
      • 1...Be6!
    • 1.Sb4?
      • threat
        • 2.Qc4#
      • 1...Be6
        • 2.Sxc6#
      • 1...Re6!
    • 1.Bxg7+?
      • 1...Rf6
        • 2.Sxc6#
      • 1...Sf6
        • 2.Sxc6#
      • 1...Rxg7!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qc4#
      • 1...Be6
        • 2.Sxc6#
      • 1...Re6
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(i);N_PINS(F)::S(F)
    • P(e);OGATE,XS(D)::QAR1(G),XP(e)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • R(f);S_CUTB(i)::S(D)
      • Refutation
        • B(i);
    • Try
      • S(D);
      • Threat
        • QAR1(G)
      • Vars
        • B(i);S_CUTR(f)::S(D),XP(e)
      • Refutation
        • R(f);
    • Try
      • B(H);CHECK,N_SPINS(F),XR(g)
      • Vars
        • R(f);P_SPINR(f)::S(F),XP(e)
        • S(h);P_SPINS(h)::S(F),XP(e)
      • Refutation
        • R(f);P_PINS(F),XB(H)
  • Actual
    • S(D);N_SPINS(F)
    • Threat
      • QAR1(G)
    • Vars
      • B(i);S_CUTR(f)::S(F),XP(e)
      • R(f);S_CUTB(i)::S(F)
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