MESON Chess Problem Database

Problem Display
PID: 41499 (BB5Q/1rp1p2K/R3N2p/1p2Pk2/1R3Np1/8/8/5n2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Die Schwalbe, 1985

BB5Q/1rp1p2K/R3N2p/1p2Pk2/1R3Np1/8/8/5n2

#2

9 + 8

3748 FIDE Album (1983-1985) 1992
5626 European Junior Chess Solving Championship 2003
5405 Chess Solving Yearbook 2003 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Be4#
    • 1...Ra7
      • 2.Be4#
    • 1...Rxb8
      • 2.Be4#
    • 1...c5
      • 2.Qf8#
    • 1...c6
      • 2.Qf8#
  • Tries
    • 1.Se2?
      • threat
        • 2.Rf4#
      • 1...Rb6
        • 2.S2d4#
      • 1...c6!
    • 1.Sh5?
      • threat
        • 2.Rf4#
      • 1...c6
        • 2.Shg7#
      • 1...Rb6!
    • 1.Sg7+?
      • 1...Kxe5
        • 2.Re6#
      • 1...Kg5!
    • 1.Bxc7?
      • threat
        • 2.Qf8#
      • 1...Rxc7
        • 2.Be4#
      • 1...Rb8
        • 2.Be4#
      • 1...g3!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Rf4#
      • 1...Rb6
        • 2.Sd4#
      • 1...c6
        • 2.Sg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(f);OGATE::B(G)
    • R(f);OGATE,XB(H)::B(G)
    • P(g);::QAR(I)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(A)
      • Vars
        • R(f);::S(B)
      • Refutation
        • P(g);
    • Try
      • S(B);
      • Threat
        • R1(A)
      • Vars
        • P(g);::S(B)
      • Refutation
        • R(f);
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(g),XP(C)::R1(D)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(H);XP(g)
      • Threat
        • QAR(I)
      • Vars
        • R(f);OGATE,XB(H)::B(G)
        • R(f);OGATE::B(G)
      • Refutation
        • P(b);
  • Actual
    • S(B);
    • Threat
      • R1(A)
    • Vars
      • R(f);::S(E)
      • P(g);::S(E)
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