MESON Chess Problem Database

Problem Display
PID: 265870 (1b1Q4/7b/1p1n2B1/3P1p2/7p/1KPk4/4RPR1/3n2N1 w - - 0 1)

Steiner, Paul

The Problemist, 1996

1b1Q4/7b/1p1n2B1/3P1p2/7p/1KPk4/4RPR1/3n2N1

#2

9 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Rg3+?
      • 1...Se3
        • 2.Rgxe3#
      • 1...hxg3!
    • 1.Qxh4?
      • threat
        • 2.Qd4#
      • 1...Sxc3
        • 2.Rg3#
      • 1...Sb5
        • 2.Qc4#
      • 1...Se4!
    • 1.Qg5?
      • threat
        • 2.Qd2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sc4
        • 2.Qxf5#
      • 1...Se4!
    • 1.Qxb6?
      • threat
        • 2.Qd4#
      • 1...Sxc3
        • 2.Qe3#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Ba7!
    • 1.Qh8?
      • threat
        • 2.Qd4#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sb5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd4#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sb5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(D),XS(a)
      • Refutation
        • P(c);XR(D)
    • Try
      • Q(I);XP(c)
      • Threat
        • QAR1(I)
      • Vars
        • S(a);N_GUARD,XP(F)::R(D)
        • S(f);N_GUARD::QAB1(I)
      • Refutation
        • S(f);N_SPINP(d)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • S(a);N_GUARD::QAR1(I),XS(a)
        • S(f);N_GUARD::QAB(I),XP(d)
      • Refutation
        • S(f);N_SPINP(d)
    • Try
      • Q(I);XP(e)
      • Threat
        • QAR1(I)
      • Vars
        • S(a);N_GUARD,XP(F)::QAR1(I)
        • S(f);N_GUARD::QAB(I),XS(f)
      • Refutation
        • B(h);
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • S(a);OGATE,XP(F)::QAR1(I),XS(a)
      • Refutation
        • S(f);
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • S(a);OGATE,XP(F)::QAR1(I),XS(a)
      • S(f);N_GUARD::QAB(I),XP(d)
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