MESON Chess Problem Database

Problem Display
PID: 222526 (8/8/5Q2/2pk1Kn1/2pB1p2/r6r/3N4/3R4 w - - 0 1)

Pirrone, Santi

US Problem Bulletin, 1964

8/8/5Q2/2pk1Kn1/2pB1p2/r6r/3N4/3R4

#2

5 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Qd6#
      • 1...Sxe4
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Ra6
        • 2.Be3#
      • 1...Rh6
        • 2.Bc3#
      • 1...Sf7
        • 2.Qe6#
      • 1...c3!
  • Keys
    • 1.Be5!
      • threat
        • 2.Qd6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Ra6
        • 2.Sf3#
      • 1...Rh6
        • 2.Sb3#
      • 1...Se4
        • 2.Qe6#
      • 1...Sf7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(E)
      • Vars
        • S(g);N_GUARD,XS(B)::QAB1(E)
        • S(g);N_GUARD::QAB1(E),XS(g)
        • R(a);N_GUARD::R(A)+B(C)
        • R(b);N_GUARD::R(A)+B(C)
        • S(g);N_GUARD::QAB1(E)
      • Refutation
        • P(c);
  • Actual
    • B(C);
    • Threat
      • QAR1(E)
    • Vars
      • S(g);N_GUARD::QAB1(E),XS(g)
      • R(a);N_GUARD::R(A)+S(B)
      • R(b);N_GUARD::R(A)+S(B)
      • S(g);N_GUARD::QAB1(E)
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