MESON Chess Problem Database

Problem Display
PID: 18214 (7n/4R1R1/5k1p/5P2/6QK/1b6/2n5/8 w - - 0 1)

Stocchi, Ottavio

Express Wieczorny (Meredith Ty.), 1954

7n/4R1R1/5k1p/5P2/6QK/1b6/2n5/8

#2

5 + 5

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Re6#
    • 1...Be6
      • 2.Rxe6#
    • 1...Sg6+
      • 2.Qxg6#
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.Qd4+?
      • 1...Kxf5
        • 2.Qf2#
        • 2.Qe5#
      • 1...Sxd4!
    • 1.Qf4?
      • threat
        • 2.Qe5#
      • 1...Sg6+
        • 2.fxg6#
      • 1...Be6
        • 2.fxe6#
      • 1...Sf7!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qe5#
      • 1...Sg6+
        • 2.Rxg6#
      • 1...Sf7
        • 2.Rg6#
      • 1...Be6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::R1(D)
    • B(b);N_GUARD::R1(D),XB(b)
    • S(e);CHECK,N_GUARD::QAR1(A),XS(e)
    • P(d);N_GUARD::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(e);CHECK,OGATE::QAR(A)+P(C),XS(e)
        • B(b);OGATE::QAR(A)+P(C),XB(b)
      • Refutation
        • S(e);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • S(e);CHECK,N_GUARD::R1(E),XS(e)
      • S(e);N_GUARD::R1(E)
      • B(b);N_GUARD::QAR1(A),XB(b)
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