MESON Chess Problem Database

Problem Display
PID: 151487 (2b5/b1B1N2B/6r1/n3P3/1Ppk1PRn/2N1p3/1P2K3/8 w - - 0 1)

Ahlheim, Karl-Heinz

Themes-64, 1964

2b5/b1B1N2B/6r1/n3P3/1Ppk1PRn/2N1p3/1P2K3/8

#2

10 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.Sb5#
    • 1...Rg5
      • 2.Sb5#
    • 1...Ra6
      • 2.Sb5#
      • 2.f5#
    • 1...Rb6
      • 2.f5#
    • 1...Rc6
      • 2.Sb5#
      • 2.f5#
    • 1...Rd6
      • 2.Sb5#
    • 1...Re6
      • 2.Sb5#
      • 2.f5#
    • 1...Rf6
      • 2.Sb5#
      • 2.f5#
    • 1...Rh6
      • 2.Sb5#
      • 2.f5#
    • 1...Rg7
      • 2.Sb5#
    • 1...Rg8
      • 2.Sb5#
  • Tries
    • 1.Sc6+?
      • 1...Rxc6
        • 2.f5#
      • 1...Sxc6!
  • Keys
    • 1.e6!
      • threat
        • 2.Be5#
      • 1...Rxe6
        • 2.Sb5#
      • 1...Rg5
        • 2.fxg5#
      • 1...Bb8
        • 2.Bb6#
      • 1...Sf3
        • 2.Sf5#
      • 1...Sc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(f);XR(F)::S(C)
    • R(f);::S(C)
    • R(f);N_GUARD::R(F)+P(E)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • R(f);XS(I)::R(F)+P(E)
      • Refutation
        • S(e);XS(I)
  • Actual
    • P(G);
    • Threat
      • B(H)
    • Vars
      • R(f);XP(G)::S(C)
      • R(f);OGATE::R(F)+P(E),XR(f)
      • B(g);N_GUARD::B(H)
      • S(d);N_GUARD::S(I)
      • S(e);N_GUARD::S(I),XS(e)
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