MESON Chess Problem Database

Problem Display
PID: 44910 (4Q3/7b/1n1P1p2/R1P2n1R/3kN1p1/3Pp3/B3P3/K2N2b1 w - - 0 1)

Degener, Udo

2nd Prize, Schiller MT, 1993-1994

4Q3/7b/1n1P1p2/R1P2n1R/3kN1p1/3Pp3/B3P3/K2N2b1

#2

11 + 8

3681 FIDE Album (1992-1994) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Rxa4#
    • 1...Sd7
      • 2.Ra4#
    • 1...Sa8
      • 2.Ra4#
    • 1...Sc8
      • 2.Ra4#
  • Tries
    • 1.Sef2?
      • threat
        • 2.Qe4#
      • 1...Sxd6
        • 2.Qxe3#
      • 1...Sg3
        • 2.Qxe3#
      • 1...Sh4
        • 2.Qxe3#
      • 1...Sh6
        • 2.Qxe3#
      • 1...Sg7
        • 2.Qxe3#
      • 1...Se7!
    • 1.Sec3?
      • threat
        • 2.Qe4#
      • 1...Sg3
        • 2.Sb5#
      • 1...Sh4
        • 2.Sb5#
      • 1...Sh6
        • 2.Sb5#
      • 1...Se7
        • 2.Sb5#
      • 1...Sg7
        • 2.Sb5#
      • 1...Sxd6!
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...Sxd6
        • 2.Se6#
      • 1...Se7
        • 2.Se6#
      • 1...Sg3
        • 2.Se6#
      • 1...Sh4
        • 2.Se6#
      • 1...Sh6
        • 2.Se6#
      • 1...Sg7!
    • 1.Sxf6?
      • threat
        • 2.Qe4#
      • 1...Sxd6
        • 2.Qe5#
      • 1...Sg3
        • 2.Qe5#
      • 1...Sh4
        • 2.Qe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Sg7
        • 2.Qe5#
      • 1...Se7!
    • 1.cxb6?
      • threat
        • 2.Ra4#
        • 2.Rd5#
        • 2.Qa4#
      • 1...Sxd6
        • 2.Rad5#
        • 2.Rhd5#
      • 1...Se7
        • 2.Ra4#
        • 2.Qa4#
      • 1...Bg8!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Qe4#
      • 1...Sxd6
        • 2.Sb3#
      • 1...Sg3
        • 2.Sb3#
      • 1...Sh4
        • 2.Sb3#
      • 1...Sh6
        • 2.Sb3#
      • 1...Se7
        • 2.Sb3#
      • 1...Sg7
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD::R(G),XS(f)
    • S(f);N_GUARD::R(G)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(K)
      • Vars
        • S(e);N_GUARD,XP(J)::QAB1(K),XP(b)
        • S(e);N_GUARD::QAB1(K),XP(b)
      • Refutation
        • S(e);
    • Try
      • S(F);
      • Threat
        • QAR1(K)
      • Vars
        • S(e);::S(F)
      • Refutation
        • S(e);XP(J)
    • Try
      • S(F);
      • Threat
        • QAR1(K)
      • Vars
        • S(e);XP(J)::S(F)
        • S(e);::S(F)
      • Refutation
        • S(e);
    • Try
      • S(F);XP(g)
      • Threat
        • QAR1(K)
      • Vars
        • S(e);XP(J)::QAB1(K)
        • S(e);::QAB1(K)
      • Refutation
        • S(e);
    • Try
      • P(H);XS(f)
      • Threat
        • DUALS(3)
      • Refutation
        • B(h);
  • Actual
    • S(F);
    • Threat
      • QAR1(K)
    • Vars
      • S(e);XP(J)::S(F)
      • S(e);::S(F)
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