MESON Chess Problem Database

Problem Display
PID: 79954 (b1BnNb1B/3Prpn1/4kP2/2R1p3/4P2N/8/7P/4K2Q w - - 0 1)

Ernst, Erich

Badische Neueste Nachrichten, 1994

b1BnNb1B/3Prpn1/4kP2/2R1p3/4P2N/8/7P/4K2Q

#2

11 + 8

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe8
      • 2.dxe8S#
    • 1...Bd5
      • 2.exd5#
    • 1...Sf5
      • 2.exf5#
    • 1...Sc6
      • 2.d8S#
    • 1...Sb7
      • 2.d8S#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sg5#
        • 2.Rxe5#
      • 1...Rxe8
        • 2.dxe8S#
      • 1...Bxe4
        • 2.Rxe5#
      • 1...Bd5
        • 2.Sg5#
      • 1...Sc6
        • 2.Sg5#
        • 2.d8S#
      • 1...Sxe8!
    • 1.Rc6+?
      • 1...Sxc6
        • 2.d8S#
      • 1...Bxc6!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Rd6#
      • 1...Rxd7
        • 2.Bxd7#
      • 1...Rxe8
        • 2.dxe8S#
      • 1...Bxd5
        • 2.exd5#
      • 1...Sxe8
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Sf5
        • 2.Sc7#
        • 2.exf5#
      • 1...Sb7
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(c);OGATE,XS(J)::PXR(c)=S
    • B(f);OGATE::P(D),XB(f)
    • S(e);OGATE::P(D),XS(e)
    • S(g);OGATE::P=S
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);OGATE,XS(J)::PXR(c)=S
        • B(f);XP(D)::R1(F),XP(a)
        • B(f);::S(E)
      • Refutation
        • S(e);XS(J)
    • Try
      • R(F);CHECK
      • Vars
        • S(g);OGATE,XR(F)::P=S
      • Refutation
        • B(f);XR(F)
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • R(c);OGATE,P_SPINR(c),XP(H)::B(I),XR(c)
      • R(c);OGATE,XS(J)::PXR(c)=S
      • B(f);OGATE,XR(F)::P(D),XB(f)
      • S(e);OGATE,XS(J)::PXS(e)=Q
      • S(g);OGATE::P=S
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