MESON Chess Problem Database

Problem Display
PID: 173899 (Q4B2/2Pr4/4pp2/1p1N1P2/n2k1P2/5K2/2RP4/5B2 w - - 0 1)

Degener, Udo

2nd HM., Boletim da UBP, 1984-1985

Q4B2/2Pr4/4pp2/1p1N1P2/n2k1P2/5K2/2RP4/5B2

#2

10 + 6

1077 Boletim da UBP 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Bc5#
    • 1...Sc3
      • 2.dxc3#
    • 1...Sc5
      • 2.Bxc5#
    • 1...Sb6
      • 2.Bc5#
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Sxb5#
        • 2.Qe4#
      • 1...Sxc3
        • 2.dxc3#
      • 1...exf5
        • 2.Sxb5#
      • 1...Rd6
        • 2.Sxb5#
      • 1...Re7
        • 2.Sxb5#
      • 1...Sc5
        • 2.Sxb5#
      • 1...b4
        • 2.Sb5#
        • 2.Qe4#
      • 1...Rd5!
    • 1.Se3?
      • threat
        • 2.Qe4#
      • 1...exf5
        • 2.Sxf5#
      • 1...Sc3
        • 2.Qa7#
        • 2.dxc3#
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qa1#
      • 1...Rd5!
    • 1.Sb4?
      • threat
        • 2.Qe4#
      • 1...Rd5
        • 2.Sc6#
      • 1...Sc3
        • 2.Qa7#
        • 2.dxc3#
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qa1#
      • 1...exf5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qe4#
      • 1...exf5
        • 2.Sxf5#
      • 1...Sc3
        • 2.Qa7#
      • 1...Rd5
        • 2.Sc6#
      • 1...Sc5
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::B(J)
    • S(a);OGATE::P(C),XS(a)
    • S(a);N_GUARD::B(J),XS(a)
    • P(c);N_GUARD::R1(B)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE,XS(F)::P(C),XS(a)
        • P(d);XP(G)::S(F),XP(c)
        • R(f);::S(F),XP(c)
        • S(a);::S(F),XP(c)
      • Refutation
        • R(f);
    • Try
      • S(F);
      • Threat
        • QAR1(I)
      • Vars
        • P(d);XP(G)::S(F),XP(d)
      • Refutation
        • R(f);
    • Try
      • S(F);
      • Threat
        • QAR1(I)
      • Vars
        • R(f);SBLOCK::S(F)
      • Refutation
        • P(d);XP(G)
  • Actual
    • S(F);
    • Threat
      • QAR1(I)
    • Vars
      • P(d);XP(G)::S(F),XP(d)
      • S(a);N_GUARD::QAB(I)
      • R(f);SBLOCK::S(F)
      • S(a);OGATE::QAB(I)
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