MESON Chess Problem Database

Problem Display
PID: 245833 (5K2/2p1Np1b/2Pn1k1r/Q1R2P1p/5N1P/8/n7/b7 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Europa-Rochade, 2004

5K2/2p1Np1b/2Pn1k1r/Q1R2P1p/5N1P/8/n7/b7

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Sxh5#
    • 1...Be5
      • 2.Sfd5#
    • 1...Bxf5
      • 2.Sg8#
    • 1...Bg6
      • 2.Sg8#
    • 1...Bg8
      • 2.Sxg8#
    • 1...Sc1
      • 2.Qxa1#
    • 1...Sb4
      • 2.Qxa1#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Sfd5#
      • 1...Sc3
        • 2.Qe5#
      • 1...Sb4
        • 2.Qxa1#
      • 1...Se4!
  • Keys
    • 1.Qxc7!
      • threat
        • 2.Qxd6#
      • 1...Bxf5
        • 2.Sg8#
      • 1...Sxf5
        • 2.Sed5#
      • 1...Be5
        • 2.Sfd5#
      • 1...Sc4
        • 2.Sfd5#
      • 1...Se4
        • 2.Sfd5#
      • 1...Sb5
        • 2.Sfd5#
      • 1...Sb7
        • 2.Sfd5#
      • 1...Sc8
        • 2.Sfd5#
      • 1...Se8
        • 2.Sfd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::S(A),XP(c)
    • B(a);SBLOCK::S(A)
    • B(i);N_GUARD,XP(E)::S(G)
    • B(i);N_GUARD::S(G)
    • B(i);N_GUARD::S(G),XB(i)
    • S(b);OGATE::QAB(C),XB(a)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(A)
      • Vars
        • S(b);S_CUTB(a)::QAB1(C)
        • S(b);N_GUARD::QAB(C),XB(a)
      • Refutation
        • S(d);
  • Actual
    • Q(C);XP(g)
    • Threat
      • QAR2(C),XS(d)
    • Vars
      • B(i);N_GUARD,XP(E)::S(G)
      • S(d);SBLOCK,XP(E)::S(G)
      • B(a);SBLOCK::S(A)
      • S(d);::S(A)
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