MESON Chess Problem Database

Problem Display
PID: 29189 (r3k1n1/Pp4Qn/4N1N1/3B2p1/8/8/7b/3K4 w q - 0 1)

Stocchi, Ottavio

Comm., Die Schwalbe, 1939

r3k1n1/Pp4Qn/4N1N1/3B2p1/8/8/7b/3K4

#2

6 + 7

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qe7#
    • 1...Sh6
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...b5
      • 2.Bc6#
    • 1...b6
      • 2.Bc6#
  • Tries
    • 1.Se5?
      • threat
        • 2.Qd7#
        • 2.Qf7#
      • 1...Rd8
        • 2.Sc7#
        • 2.Qf7#
      • 1...Shf6
        • 2.Qf8#
        • 2.Qf7#
      • 1...Sf8
        • 2.Qxf8#
        • 2.Qf7#
      • 1...Sgf6
        • 2.Qf7#
      • 1...Sh6
        • 2.Qd7#
      • 1...Se7
        • 2.Qf7#
      • 1...Bxe5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qd7#
      • 1...Kd8
        • 2.Qd7#
      • 1...0-0-0
        • 2.Qxb7#
      • 1...Rd8
        • 2.Qf7#
      • 1...Shf6
        • 2.Qf8#
      • 1...Sf8
        • 2.Qxf8#
      • 1...Sgf6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • S(g);N_GUARD::QAR1(F)
    • S(g);N_GUARD::QAR1(F),XS(g)
    • P(c);N_GUARD::B(B)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::QAB1(F)
      • Refutation
        • B(a);XS(D)
  • Actual
    • S(C);
    • Threat
      • QAB1(F)
    • Vars
      • K(f);P-FLIGHT::QAR1(F)
      • K(f);0-0-0,OGATEB,P_PINB(B)::QAB1(F),XP(c)
      • R(e);P_PINB(B),SBLOCK::QAB1(F)
      • S(d);N_GUARD::QAR1(F)
      • S(d);N_GUARD::QAR1(F),XS(d)
      • S(g);N_GUARD::QAR1(F)
      • S(g);N_GUARD::QAR1(F),XS(g)
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