MESON Chess Problem Database

Problem Display
PID: 238941 (8/3K1Nbp/4P3/2pN1k1P/6p1/2r1rP1n/2n1R3/B3Q3 w - - 0 1)

Petite, Efren

L'Italia Scacchistica, 1991

8/3K1Nbp/4P3/2pN1k1P/6p1/2r1rP1n/2n1R3/B3Q3

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.fxe4#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qxg4#
      • 1...gxf3
        • 2.Sd6#
      • 1...Rc4
        • 2.Se7#
      • 1...Re4
        • 2.fxe4#
      • 1...Sf2
        • 2.Qf4#
      • 1...Rxf3!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxg4#
      • 1...Rxf3
        • 2.Sd6#
      • 1...gxf3
        • 2.Se7#
      • 1...Rc4
        • 2.Sd6#
      • 1...Re4
        • 2.fxe4#
      • 1...Sf2
        • 2.Qg5#
      • 1...g3
        • 2.Se7#
        • 2.Qxh3#
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::P(D),XR(c)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B),XP(e)
      • Vars
        • P(e);XP(D)::S(I)
        • R(b);::S(E)
        • R(c);OGATE::P(D),XR(c)
        • S(d);N_GUARD::QAR1(B)
      • Refutation
        • R(c);XP(D)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(e)
    • Vars
      • R(c);XP(D)::S(I)
      • P(e);XP(D)::S(E)
      • R(b);::S(I)
      • R(c);OGATE::P(D),XR(c)
      • S(d);N_GUARD::QAR1(B)
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