MESON Chess Problem Database

Problem Display
PID: 67684 (8/p7/1r6/1P6/k7/8/1Q6/K1N5 w - - 0 1)

Stocchi, Ottavio

1st Prize=, Trybuna Robotnicza, 1956

8/p7/1r6/1P6/k7/8/1Q6/K1N5

#2

4 + 3

5407 Selected Stocchi (II) 2004
14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Qb3#
  • Tries
    • 1.Sa2?
      • threat
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb4#
      • 1...a5
        • 2.Sc3#
      • 1...Rxb5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb4#
      • 1...Rxb5
        • 2.Qa2#
      • 1...a5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB1(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • P(c);SBLOCK::S(B)
      • Refutation
        • R(b);XP(D)
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
      • R(b);SBLOCK,XP(D)::QAR2(C)
      • P(c);SBLOCK::S(B)
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