MESON Chess Problem Database

Problem Display
PID: 154729 (8/1N4QB/4p3/2RpP3/K2k4/2pp1r2/5P2/6B1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

stern, 2000

8/1N4QB/4p3/2RpP3/K2k4/2pp1r2/5P2/6B1

#2

8 + 6

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2
      • 2.Bxf2#
    • 1...Re3
      • 2.fxe3#
    • 1...Rg3
      • 2.fxg3#
    • 1...Rh3
      • 2.f3#
    • 1...Rf4
      • 2.f3#
    • 1...Rf5
      • 2.f3#
    • 1...Rf6
      • 2.f4#
    • 1...Rf7
      • 2.f3#
      • 2.f4#
    • 1...Rf8
      • 2.f3#
      • 2.f4#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Sxe6#
      • 1...Rxf2
        • 2.Bxf2#
      • 1...Rf5
        • 2.f3#
      • 1...Rf6
        • 2.f4#
      • 1...Kxc5!
    • 1.Qg4+?
      • 1...Rf4
        • 2.Qxf4#
      • 1...Kxe5!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Sb3#
      • 1...Kxc5
        • 2.Qa7#
      • 1...Rxf2
        • 2.Bxf2#
      • 1...Rf5
        • 2.f3#
      • 1...Rf6
        • 2.f4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(c);OGATE,P_SPINR(c),XP(B)::B(A),XR(c)
    • R(c);OGATE::P(B),XR(c)
    • R(c);OGATE::B(A)+P(B),XR(c)
    • R(c);OGATE::B(A)+P(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F),XP(f)
      • Vars
        • R(c);OGATE,P_SPINR(c),XP(B)::B(A),XR(c)
        • R(c);OGATE::B(A)+P(B)
      • Refutation
        • K(d);S_FLIGHT,XR(D)
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR2(G),XR(c)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT,XP(E)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(D)::QAB(G)
      • R(c);OGATE,P_SPINR(c),XP(B)::B(A),XR(c)
      • R(c);OGATE::B(A)+P(B)
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