MESON Chess Problem Database

Problem Display
PID: 67931 (3KR1n1/B1Q2B2/p1pPNp1p/2NkP2R/8/1P1p4/8/q7 w - - 0 1)

Degener, Udo

Degenkolbe, Mirko

3rd HM., Thema Danicum, 1992

3KR1n1/B1Q2B2/p1pPNp1p/2NkP2R/8/1P1p4/8/q7

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sf4#
      • 2.Sg5#
      • 2.Sg7#
      • 2.Sf8#
    • 1...Qb1
      • 2.exf6#
    • 1...Qa2
      • 2.exf6#
    • 1...Qa3
      • 2.exf6#
    • 1...Qa4
      • 2.exf6#
    • 1...Qa5
      • 2.exf6#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Sg5#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Sc3#
      • 1...c5
        • 2.Qb7#
      • 1...Se7!
    • 1.Sd7?
      • threat
        • 2.Sg5#
      • 1...Ke4
        • 2.Qxc6#
      • 1...c5
        • 2.Qb7#
      • 1...Qxe5!
  • Keys
    • 1.Se4!
      • threat
        • 2.S6g5#
      • 1...Kxe4
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Sc3#
      • 1...Se7
        • 2.Sxf6#
      • 1...c5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::R(D)+P(C),XP(f)
    • Q(a);N_GUARD,P_PINQ(H)::R(D)+P(C),XP(f)
  • Tries
    • Try
      • S(B);
      • Threat
        • B(I)+S(F)
      • Vars
        • K(c);S_FLIGHT::QAB(H),XP(e)
        • Q(a);N_GUARD,P_SPINQ(a),XP(C)::S(B)
        • P(e);OGATEB::QAB(H)
      • Refutation
        • S(h);
    • Try
      • S(B);
      • Threat
        • B(I)+S(F)
      • Vars
        • K(c);S_FLIGHT::QAB(H),XP(e)
        • P(e);OGATEB::QAB(H)
      • Refutation
        • Q(a);P_SPINQ(a),XP(C)
  • Actual
    • S(B);
    • Threat
      • B(I)+S(F)
    • Vars
      • K(c);S_FLIGHT,XS(B)::QAB(H),XP(e)
      • Q(a);N_GUARD,P_SPINQ(a),XP(C)::S(B)
      • S(h);N_GUARD::S(B),XP(f)
      • P(e);OGATEB::QAB(H)
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