MESON Chess Problem Database

Problem Display
PID: 50170 (3n4/2N1R3/2pP4/2P1P1Rp/Q2bk2n/1p2NrPr/b3K1B1/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Skakbladet, 1965

3n4/2N1R3/2pP4/2P1P1Rp/Q2bk2n/1p2NrPr/b3K1B1/8

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Bxf3#
    • 1...Sg6
      • 2.Bxf3#
    • 1...Se6
      • 2.Qxc6#
    • 1...Sb7
      • 2.Qxc6#
    • 1...Sf7
      • 2.Qxc6#
    • 1...b2
      • 2.Qc2#
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qxd4#
      • 1...Sxf5
        • 2.Bxf3#
      • 1...Se6!
    • 1.Sb5?
      • threat
        • 2.Sc3#
        • 2.Qxd4#
      • 1...Rxg3
        • 2.Qxd4#
      • 1...Sf5
        • 2.Sc3#
        • 2.Bxf3#
      • 1...Se6
        • 2.Sc3#
      • 1...cxb5!
    • 1.Se6?
      • threat
        • 2.Qxd4#
      • 1...Sxe6
        • 2.Qxc6#
      • 1...Sf5!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Qxd4#
      • 1...bxc2
        • 2.Qxc2#
      • 1...Sf5
        • 2.Bxf3#
      • 1...Se6
        • 2.Qxc6#

There are these versions: 82122

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(g);N_GUARD::B(B),XR(c)
    • S(j);N_GUARD::QAB(E),XP(i)
    • P(b);OGATE::QAB(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(E),XB(e)
      • Vars
        • S(g);N_GUARD,XS(C)::B(B),XR(c)
      • Refutation
        • S(j);
    • Try
      • S(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);XP(D)::QAR1(E),XB(e)
        • S(j);::S(J)
      • Refutation
        • P(i);XS(J)
    • Try
      • S(J);
      • Threat
        • QAR1(E),XB(e)
      • Vars
        • S(j);N_GUARD,XS(J)::QAB(E),XP(i)
      • Refutation
        • S(g);
  • Actual
    • S(C);
    • Threat
      • QAR1(E),XB(e)
    • Vars
      • P(b);OGATE,XS(C)::QAB(E),XP(b)
      • S(g);N_GUARD::B(B),XR(c)
      • S(j);N_GUARD::QAB(E),XP(i)
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