MESON Chess Problem Database

Problem Display
PID: 47114 (4n1b1/3N3R/2R5/1P1kPN2/8/2bP2pK/5P1P/4r3 w - - 0 1)

Keller, Michael

2nd HM., Schach-Aktiv, 2001

4n1b1/3N3R/2R5/1P1kPN2/8/2bP2pK/5P1P/4r3

#2

10 + 6

269 Schach-Aktiv 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Sb6#
    • 1...Bd4
      • 2.Se7#
    • 1...Bxe5
      • 2.Sb6#
    • 1...Be6
      • 2.Rc5#
    • 1...Sd6
      • 2.Rxd6#
    • 1...Sf6
      • 2.Rd6#
    • 1...Sc7
      • 2.Rd6#
    • 1...Sg7
      • 2.Rd6#
  • Tries
    • 1.Rhh6?
      • threat
        • 2.Rc5#
      • 1...Bd4
        • 2.Se7#
      • 1...Sf6
        • 2.Rd6#
      • 1...Bb4!
    • 1.Re7?
      • threat
        • 2.Sb6#
        • 2.Rc5#
      • 1...Bb4
        • 2.Sb6#
      • 1...Ba5
        • 2.Rc5#
      • 1...Be6
        • 2.Rc5#
      • 1...Bd4!
    • 1.f4?
      • threat
        • 2.Sb6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Bd4
        • 2.Se7#
      • 1...Ba5!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Se7#
      • 1...Rxe5
        • 2.Sb6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Re4
        • 2.dxe4#
      • 1...Bb4
        • 2.Rd4#
      • 1...Be6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(a);SBLOCK,XP(F)::S(I)
    • B(b);SBLOCK::S(G)
    • B(b);SBLOCK,XP(F)::S(I)
    • B(f);P_PINS(G),SBLOCK::R1(H)
    • S(e);N_GUARD::R1(H),XS(e)
    • S(e);N_GUARD::R1(H)
  • Tries
    • Try
      • R(J);
      • Threat
        • R1(H)
      • Vars
        • B(b);SBLOCK::S(G)
        • S(e);N_GUARD::R1(H)
      • Refutation
        • B(b);
    • Try
      • R(J);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::S(I)
        • B(b);::R1(H)
        • B(f);P_PINS(G)::R1(H)
      • Refutation
        • B(b);
    • Try
      • P(A);
      • Threat
        • S(I)
      • Vars
        • S(e);N_GUARD::R1(H),XS(e)
        • B(b);SBLOCK::S(G)
      • Refutation
        • B(b);
  • Actual
    • R(J);
    • Threat
      • S(G)
    • Vars
      • R(a);SBLOCK,XP(F)::S(I)
      • S(e);N_GUARD::R1(H),XS(e)
      • R(a);OGATE::P(C),XR(a)
      • B(b);N_GUARD::R1(J)
      • B(f);P_PINS(G),SBLOCK::R1(H)
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