MESON Chess Problem Database

Problem Display
PID: 66996 (3B4/2p5/8/5Q2/k7/2K5/2N5/n7 w - - 0 1)

Stocchi, Ottavio

2nd Prize, Norsk Vanforetidsskrift, 1953

3B4/2p5/8/5Q2/k7/2K5/2N5/n7

#2

4 + 3

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qd7#
    • 1...c6
      • 2.Qa5#
  • Tries
    • 1.Kc4?
      • threat
        • 2.Qb5#
      • 1...c5
        • 2.Qd7#
      • 1...c6
        • 2.Qa5#
      • 1...Sxc2!
    • 1.Sxa1?
      • 1...Ka3
        • 2.Qa5#
      • 1...c6
        • 2.Qa5#
      • 1...c5!
    • 1.Qd7+?
      • 1...c6
        • 2.Qxc6#
      • 1...Ka5!
  • Keys
    • 1.Bxc7!
      • threat
        • 2.Qd7#
        • 2.Qa5#
      • 1...Sxc2
        • 2.Qa5#
      • 1...Sb3
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(c);N_GUARD::QAB(C)
    • P(c);::QAR1(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • P(c);N_GUARD::QAB(C)
        • P(c);::QAR1(C)
      • Refutation
        • S(a);XS(A)
    • Try
      • S(A);XS(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
        • P(c);::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • B(D);XP(c)
    • Threat
      • DUALS(2)
    • Vars
      • S(a);XS(A)::QAR1(C)
      • S(a);::QAB(C)
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Developed and maintained by Brian Stephenson.
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