MESON Chess Problem Database

Problem Display
PID: 139022 (2R1R2K/7p/3p2p1/N1PkPpN1/n2pp3/7n/2b2QPr/8 w - - 0 1)

Petite, Efren

L'Italia Scacchistica, 2006

2R1R2K/7p/3p2p1/N1PkPpN1/n2pp3/7n/2b2QPr/8

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...dxc5
      • 2.Rcd8#
    • 1...dxe5
      • 2.Red8#
  • Tries
    • 1.Se6?
      • threat
        • 2.Qxd4#
      • 1...Kxe5
        • 2.Qxd4#
      • 1...Sxf2
        • 2.Sf4#
      • 1...dxc5
        • 2.Sc7#
      • 1...dxe5
        • 2.Rcd8#
      • 1...d3
        • 2.Sc7#
        • 2.Qd4#
      • 1...e3!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Bxe4
        • 2.Qa2#
      • 1...fxe4
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(i);OGATEB,SBLOCK,XP(D)::R(G)
    • P(i);OGATEB,SBLOCK,XP(E)::R(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(A),XP(e)
      • Vars
        • K(g);P-FLIGHT,XP(E)::QAB1(A),XP(e)
        • S(c);N_GUARD,XQ(A)::S(F)
        • P(i);SBLOCK,XP(D)::S(F)
        • P(i);OGATEB,SBLOCK,XP(E)::R(G)
      • Refutation
        • P(f);
  • Actual
    • S(F);XP(f)
    • Threat
      • S(F)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(F)::QAB1(A)
      • B(a);OGATE,SBLOCK,XS(F)::QAB(A)
      • P(h);OGATE,SBLOCK,XS(F)::QAB(A)
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