MESON Chess Problem Database

Problem Display
PID: 67023 (3RB3/1pK5/5p1P/3P1kN1/2p2p1P/3N1p1P/r5r1/1Q4B1 w - - 0 1)

Pongrac, Georg

Troll, 2001

3RB3/1pK5/5p1P/3P1kN1/2p2p1P/3N1p1P/r5r1/1Q4B1

#2

11 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Sb2+?
      • 1...Ke5
        • 2.Sxc4#
        • 2.Sxf3#
        • 2.Sf7#
        • 2.Qe4#
      • 1...Rc2!
    • 1.Sf2+?
      • 1...Ke5
        • 2.Sxf3#
        • 2.Qe4#
      • 1...Rc2!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sd6#
      • 1...Ke4
        • 2.Sc5#
      • 1...Kg6
        • 2.Sxf4#
      • 1...cxd3
        • 2.Qxd3#
      • 1...Ra6
        • 2.Sf2#
      • 1...Rg7
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(C);CHECK
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(f);S_FLIGHT::QAB(A)+S(C),DCHECK
      • K(f);S_FLIGHT::QAB(A)+S(C),DCHECK,XP(e)
      • P(d);OGATE,P_SPINP(d),XS(C)::QAB(A),XP(d)
      • R(a);N_GUARD::QAB(A)+S(C)
      • R(b);N_GUARD,P_PINS(G)::QAB(A)+S(C)
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