MESON Chess Problem Database

Problem Display
PID: 81999 (2b5/2R1KB2/1n1NpB1r/3k2p1/p3p3/r1p1P3/3P4/nN2b3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

4th Prize, Hungarian Chess Association, 1964

2b5/2R1KB2/1n1NpB1r/3k2p1/p3p3/r1p1P3/3P4/nN2b3

#2

8 + 12

23 Die Schwalbe 1966
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sxc3#
    • 1...Ba6
      • 2.Bxe6#
    • 1...Bb7
      • 2.Bxe6#
    • 1...Sb3
      • 2.Sxc3#
    • 1...Sd7
      • 2.Bxe6#
  • Tries
    • 1.Bd4?
      • threat
        • 2.Rc5#
      • 1...Sb3
        • 2.Sxc3#
      • 1...Sd7!
    • 1.d4?
      • threat
        • 2.Rc5#
      • 1...exd4 ep
        • 2.e4#
      • 1...Sd7
        • 2.Bxe6#
      • 1...Sb3!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Rc5#
      • 1...Bxb7
        • 2.Bxe6#
      • 1...Sb3
        • 2.Sxc3#
      • 1...Sd7
        • 2.Bxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD::S(A),XP(d)
    • B(l);N_GUARD::B(H),XP(j)
    • S(a);S_CUTR(c)::S(A),XP(d)
    • S(i);S_CUTB(l)::B(H),XP(j)
  • Tries
    • Try
      • B(E);
      • Threat
        • R1(F)
      • Vars
        • S(a);S_CUTR(c)::S(A),XP(d)
      • Refutation
        • S(i);
    • Try
      • P(B);
      • Threat
        • R1(F)
      • Vars
        • P(f);EP,OGATE,XP(B)::P(C)
        • S(i);S_CUTB(l)::B(H),XP(j)
      • Refutation
        • S(a);
  • Actual
    • S(D);
    • Threat
      • R1(F)
    • Vars
      • B(l);N_GUARD,XS(D)::B(H),XP(j)
      • S(a);S_CUTR(c)::S(A),XP(d)
      • S(i);S_CUTB(l)::B(H),XP(j)
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