MESON Chess Problem Database

Problem Display
PID: 82039 (1bN5/2n3nq/1Npp3r/r1k2b1p/pR1p4/P5B1/2p2PBK/6Q1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Problemisten, 1948

1bN5/2n3nq/1Npp3r/r1k2b1p/pR1p4/P5B1/2p2PBK/6Q1

#2

9 + 14

6490 yacpdb 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sxa4#
      • 2.Rc4#
    • 1...Re6
      • 2.Sd7#
    • 1...Bd3
      • 2.Sd7#
    • 1...Be6
      • 2.Bxd6#
    • 1...Bg6
      • 2.Sd7#
      • 2.Bxd6#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sb5
      • 2.Rc4#
    • 1...Sce6
      • 2.Sd7#
    • 1...Sge6
      • 2.Bxd6#
    • 1...d3
      • 2.f3#
      • 2.f4#
  • Tries
    • 1.Be5?
      • threat
        • 2.Bxd4#
      • 1...Sb5
        • 2.Rc4#
      • 1...Sce6
        • 2.Sd7#
      • 1...Sge6
        • 2.Bxd6#
      • 1...d3
        • 2.Bd4#
        • 2.f3#
        • 2.f4#
      • 1...dxe5!
    • 1.f3?
      • threat
        • 2.Qxd4#
      • 1...Sb5
        • 2.Rc4#
      • 1...Sge6
        • 2.Bxd6#
      • 1...Sce6!
    • 1.f4?
      • threat
        • 2.Qxd4#
      • 1...Sb5
        • 2.Rc4#
      • 1...Sce6
        • 2.Sd7#
      • 1...Sge6!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qxd4#
      • 1...Sb5
        • 2.Rc4#
      • 1...Sce6
        • 2.Sd7#
      • 1...Sge6
        • 2.Bxd6#
      • 1...d3
        • 2.Qc3#
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(j);S_CUTB(f)::S(H)
    • B(f);N_GUARD::S(H)
    • B(f);S_CUTR(j)::B(F),XP(i)
    • B(f);N_GUARD::S(H),XB(f)
    • S(k);SBLOCK::R1(G)
    • S(k);S_CUTB(f)::S(H)
    • S(l);S_CUTR(j)::B(F),XP(i)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(F),XP(c)
      • Vars
        • S(k);SBLOCK::R1(G)
        • S(k);S_CUTB(f)::S(H)
        • S(l);S_CUTR(j)::B(F),XP(i)
      • Refutation
        • P(i);XB(F)
    • Try
      • P(B);P_PINP(c)
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • S(k);SBLOCK::R1(G)
        • S(l);S_CUTR(j)::B(F),XP(i)
      • Refutation
        • S(k);
    • Try
      • P(B);P_PINP(c)
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • S(k);SBLOCK::R1(G)
        • S(k);S_CUTB(f)::S(H)
      • Refutation
        • S(l);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(c)
    • Vars
      • S(k);SBLOCK::R1(G)
      • S(k);S_CUTB(f)::S(H)
      • S(l);S_CUTR(j)::B(F),XP(i)
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