MESON Chess Problem Database

Problem Display
PID: 22737 (4N3/1p1n4/np5R/rk6/prp1p2K/P1RPB1p1/3N2Bb/3b4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

1st Prize, Schach, 1998

4N3/1p1n4/np5R/rk6/prp1p2K/P1RPB1p1/3N2Bb/3b4

#2

9 + 13

1101 BCSC Final 2001-2002
56 The Problemist 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.dxc4#
    • 1...Rb2
      • 2.dxc4#
    • 1...Rb3
      • 2.dxc4#
    • 1...Sac5
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sab8
      • 2.Sc7#
    • 1...Se5
      • 2.Rxb6#
    • 1...Sdb8
      • 2.Rxb6#
    • 1...Sf8
      • 2.Rxb6#
    • 1...cxd3
      • 2.Sd6#
    • 1...exd3
      • 2.Sd6#
  • Tries
    • 1.Sxe4?
      • threat
        • 2.S4d6#
      • 1...cxd3
        • 2.Sd6#
      • 1...Sac5
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sab8
        • 2.Sc7#
      • 1...Bf3!
    • 1.Bxe4?
      • threat
        • 2.Sd6#
      • 1...Sac5
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sab8
        • 2.Sc7#
      • 1...g2!
    • 1.Rxc4?
      • threat
        • 2.Sd6#
      • 1...Rxc4
        • 2.dxc4#
      • 1...Sac5
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sab8
        • 2.Sc7#
      • 1...Sdc5!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Scd6#
      • 1...Rxc4
        • 2.dxc4#
      • 1...exd3
        • 2.Sd6#
      • 1...Sac5
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Sab8
        • 2.Sc7#
      • 1...Sdc5
        • 2.Rxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(e);N_GUARD::P(E),XP(f)
    • S(j);N_GUARD::S(I)
    • S(j);N_GUARD::S(I),XS(j)
    • S(m);N_GUARD::R1(H),XP(k)
    • P(f);XP(E)::S(I)
    • P(g);XP(E)::S(I)
  • Tries
    • Try
      • S(A);XP(g)
      • Threat
        • S(A)
      • Vars
        • P(f);P_PINS(A),XP(E)::S(I)
        • S(j);N_GUARD::S(I)
        • S(j);N_GUARD::S(I),XS(j)
      • Refutation
        • B(a);
    • Try
      • B(B);XP(g)
      • Threat
        • S(I)
      • Vars
        • S(j);N_GUARD::S(I)
        • S(j);N_GUARD::S(I),XS(j)
      • Refutation
        • P(c);
    • Try
      • R(D);XP(f)
      • Threat
        • S(I)
      • Vars
        • R(e);OGATE,XR(D)::P(E),XR(e)
        • S(j);N_GUARD::S(I)
        • S(j);N_GUARD::S(I),XS(j)
      • Refutation
        • S(m);
  • Actual
    • S(A);XP(f)
    • Threat
      • S(A)
    • Vars
      • R(e);OGATE,XS(A)::P(E),XR(e)
      • P(g);P_PINS(A),XP(E)::S(I)
      • S(j);N_GUARD::S(I)
      • S(j);N_GUARD::S(I),XS(j)
      • S(m);N_GUARD::R1(H),XP(k)
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