MESON Chess Problem Database

Problem Display
PID: 198424 (4Q1B1/1P1R4/1ppN1Kn1/1P3p1R/3k1N2/Pnr4b/2P2p2/8 w - - 0 1)

Rizzetti, Dante Hugo

4th Prize, Fontaine MT, 1978-1979

4Q1B1/1P1R4/1ppN1Kn1/1P3p1R/3k1N2/Pnr4b/2P2p2/8

#2

11 + 9

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Se4#
    • 1...Rc5
      • 2.Se2#
    • 1...Sc5
      • 2.Se2#
      • 2.Sxf5#
    • 1...Sxf4
      • 2.Qe5#
    • 1...Sh4
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qe5#
    • 1...Sh8
      • 2.Qe5#
    • 1...c5
      • 2.Se2#
      • 2.Sc4#
      • 2.Sxf5#
      • 2.Sc8#
  • Tries
    • 1.Qe4+?
      • 1...Kc5
        • 2.Se6#
        • 2.Qb4#
      • 1...fxe4!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Se4#
      • 1...Kc5
        • 2.Se4#
      • 1...Sxf4
        • 2.Qe5#
      • 1...Re3
        • 2.Qc4#
      • 1...Rc5
        • 2.Qd3#
      • 1...Sc5
        • 2.Sxf5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Se7
        • 2.Qe5#
      • 1...Sf8
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK::R(I)+S(F)
    • R(c);SBLOCK::S(C)
    • S(i);N_GUARD,XS(C)::QAB1(J)
    • S(i);N_GUARD::QAB1(J)
    • S(i);N_GUARD::QAB1(J),XS(i)
  • Tries
    • Try
      • Q(J);CHECK
      • Refutation
        • P(f);XQ(J)
  • Actual
    • Q(J);
    • Threat
      • R(I)+S(F)
    • Vars
      • K(e);P_SPINP(f),S_FLIGHT::S(F)
      • S(i);N_GUARD,XS(C)::QAB1(J)
      • R(c);N_GUARD,SBLOCK::QAR1(J)
      • S(b);SBLOCK::R(I)+S(F),DCHECK,XP(f)
      • S(i);N_GUARD::QAB1(J),XS(i)
      • S(i);N_GUARD::QAB1(J)
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