MESON Chess Problem Database

Problem Display
PID: 91859 (2K3Q1/1NPBb3/3prpp1/P2r1b2/1Bkn2R1/1R1pp3/P3P1p1/5N2 w - - 0 1)

Deichelbohrer, Horst

Schach-Echo, 1978

2K3Q1/1NPBb3/3prpp1/P2r1b2/1Bkn2R1/1R1pp3/P3P1p1/5N2

#2

12 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Sxe3#
    • 1...Rb5
      • 2.Sxe3#
    • 1...Rc5
      • 2.Sxe3#
    • 1...Re4
      • 2.exd3#
    • 1...Be4
      • 2.Sxe3#
    • 1...Bxg4
      • 2.exd3#
  • Tries
    • 1.Sxd6+?
      • 1...Rdxd6
        • 2.Sxe3#
      • 1...Rexd6
        • 2.Sxe3#
      • 1...Bxd6!
    • 1.Bb5+?
      • 1...Rxb5
        • 2.Sxe3#
      • 1...Kxb5!
    • 1.Rxd4+?
      • 1...Rxd4
        • 2.Sxe3#
      • 1...Kxd4!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Bb5#
      • 1...Rxc5
        • 2.Sxe3#
      • 1...Bxg4
        • 2.exd3#
      • 1...Rde5
        • 2.Rxd4#
      • 1...Re4
        • 2.exd3#
      • 1...Ree5
        • 2.Rxd4#
      • 1...Be4
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(f);P_SPINR(i),XP(G)::S(A),XP(c)
    • R(f);P_SPINR(i)::S(A),XP(c)
    • R(f);P_PINP(I),P_SPINR(i)::S(A),XP(c)
    • R(i);N_SPINS(e),P_PINB(J),P_SPINR(f),S_CUTB(g)::P(C),XP(b)
    • B(g);N_SPINS(e),S_CUTR(i)::S(A),XP(c)
    • B(g);N_GUARD,N_SPINS(e),XR(F)::P(C),XP(b)
  • Tries
    • Try
      • S(H);CHECK,XP(h)
      • Vars
        • R(f);P_SPINR(i),XS(H)::S(A),XP(c)
        • R(i);P_PINB(J),P_SPINR(f),XS(H)::S(A),XP(c)
      • Refutation
        • B(l);XS(H)
    • Try
      • B(J);CHECK
      • Vars
        • R(f);P_SPINR(i),SBLOCK,XB(J)::S(A),XP(c)
      • Refutation
        • K(d);N_SPINS(e),S_FLIGHT,XB(J)
    • Try
      • R(F);CHECK,XS(e)
      • Vars
        • R(f);P_SPINR(i),SBLOCK,XR(F)::S(A),XP(c)
      • Refutation
        • K(d);P-FLIGHT,XR(F)
  • Actual
    • B(E);
    • Threat
      • B(J)
    • Vars
      • R(f);P_PINP(I),P_SPINR(i),XB(E)::S(A),XP(c)
      • B(g);N_GUARD,N_SPINS(e),XR(F)::P(C),XP(b)
      • R(f);N_GUARD,P_SPINR(i)::R1(F),XS(e)
      • R(i);N_SPINS(e),P_PINB(J),P_SPINR(f),S_CUTB(g)::P(C),XP(b)
      • R(i);P_PINB(J),P_SPINR(f)::R1(F),XS(e)
      • B(g);N_SPINS(e),S_CUTR(i)::S(A),XP(c)
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