MESON Chess Problem Database

Problem Display
PID: 192883 (8/3pN1Kp/2pP2nR/1pP1kN2/1PnR3P/2P1P3/B3Q2P/8 w - - 0 1)

Rizzetti, Dante Hugo

Comm., Probleme, 1965

8/3pN1Kp/2pP2nR/1pP1kN2/1PnR3P/2P1P3/B3Q2P/8

#2

14 + 7

16325 Seleccion de Problemas de Dante Hugo Rizzetti (Kapros) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Re4#
    • 1...Sxe3
      • 2.Qxe3#
    • 1...Sf4
      • 2.exf4#
  • Tries
    • 1.Rd5+?
      • 1...Ke4
        • 2.Sg3#
        • 2.Bb1#
        • 2.Qg2#
      • 1...Ke6
        • 2.Sd4#
      • 1...cxd5!
  • Keys
    • 1.Qh5!
      • 1...Ke6
        • 2.Re4#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...Sxd6
        • 2.Sxd6#
      • 1...Sxh4
        • 2.Sxh4#
      • 1...Sxe7
        • 2.Sxe7#
      • 1...Sd2
        • 2.Sg3#
      • 1...Sb2
        • 2.Sg3#
      • 1...Sa3
        • 2.Sg3#
      • 1...Sa5
        • 2.Sg3#
      • 1...Sb6
        • 2.Sg3#
      • 1...Sf4
        • 2.exf4#
      • 1...Sf8
        • 2.Sg3#
      • 1...Sh8
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,P_SPINS(a)::R(G)
    • S(a);OGATE,P_SPINS(a),XP(E)::QAR2(B),XS(a)
    • S(e);OGATE::QAR(B)+P(E)DCHECK,XS(e)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINS(e)::S(J)
      • Refutation
        • P(d);XR(G)
  • Actual
    • Q(B);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(a)::R(G)
      • S(a);XP(E)::QAR(B)+S(J),XS(a)
      • S(a);XP(K)::QAR(B)+S(J),XS(a)
      • S(e);XP(H)::QAR(B)+S(J),XS(e)
      • S(e);XS(M)::QAR(B)+S(J),XS(e)
      • S(a);::QAR(B)+S(J)
      • S(e);OGATE::P(E),XS(e)
      • S(e);::QAR(B)+S(J)
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