MESON Chess Problem Database

Problem Display
PID: 246445 (5nQ1/1p6/1Ppp2b1/KPkN4/3p3b/3nN3/3B1r2/8 w - - 0 1)

Petite, Efren

Europe Echecs, 1988

5nQ1/1p6/1Ppp2b1/KPkN4/3p3b/3nN3/3B1r2/8

#2

7 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Bb4#
    • 1...Se1
      • 2.Bb4#
    • 1...Sb2
      • 2.Bb4#
    • 1...Sb4
      • 2.Bxb4#
    • 1...Sf4
      • 2.Bb4#
    • 1...Se5
      • 2.Bb4#
    • 1...cxd5
      • 2.Qxd5#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qc4#
      • 1...dxe3
        • 2.Bxe3#
      • 1...cxb5
        • 2.Qd5#
      • 1...Bf7
        • 2.Sxd3#
      • 1...Sb2
        • 2.Bb4#
      • 1...Se5
        • 2.Bb4#
      • 1...Se6
        • 2.Sxe6#
      • 1...d5!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qc4#
      • 1...dxe3
        • 2.Bxe3#
      • 1...cxb5
        • 2.Qd5#
      • 1...d5
        • 2.Qxf8#
      • 1...Bf7
        • 2.Se4#
      • 1...Sb2
        • 2.Bb4#
      • 1...Se5
        • 2.Bb4#
      • 1...Se6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • S(b);N_GUARD::B(A)
    • S(b);N_GUARD::B(A),XS(b)
    • P(f);OGATE,XS(E)::QAR1(G),XP(f)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(G)
      • Vars
        • P(c);OGATE,XS(B)::B(A),XP(c)
        • P(f);N_GUARD,XP(D)::QAR1(G)
        • B(h);N_GUARD::S(E),XS(b)
        • S(b);N_GUARD::B(A)
        • S(j);N_GUARD::S(E),XS(j)
      • Refutation
        • P(g);
  • Actual
    • S(E);
    • Threat
      • QAR1(G)
    • Vars
      • P(c);OGATE,XS(B)::B(A),XP(c)
      • P(f);N_GUARD,XP(D)::QAR1(G)
      • P(g);OGATEB::QAB(G),XS(j)
      • B(h);N_GUARD::S(E)
      • S(b);N_GUARD::B(A)
      • S(j);N_GUARD::S(E)
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