MESON Chess Problem Database

Problem Display
PID: 17285 (1R6/8/KN6/8/1k6/7r/2QP4/8 w - - 0 1)

Stocchi, Ottavio

2nd Prize, Le Salut Public Miniature Ty., 1929

1R6/8/KN6/8/1k6/7r/2QP4/8

#2

5 + 2

2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997
3100 Selected Stocchi (I) 2001
3713 Snap 2001
14475 Mat Plus Review 2007
133 The Problemist Supplement 2017
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Sc4#
    • 1...Rh1
      • 2.Qc3#
    • 1...Rh2
      • 2.Qc3#
    • 1...Ra3+
      • 2.Sa4#
    • 1...Rc3
      • 2.Qxc3#
    • 1...Rh4
      • 2.Qc3#
    • 1...Rh5
      • 2.Qc3#
    • 1...Rh6
      • 2.Qc3#
    • 1...Rh7
      • 2.Qc3#
    • 1...Rh8
      • 2.Qc3#
  • Keys
    • 1.d4!
      • threat
        • 2.Sc4#
      • 1...Ra3+
        • 2.Sa4#
      • 1...Ka3
        • 2.Sc4#
      • 1...Rb3
        • 2.Qc5#
      • 1...Rc3
        • 2.Qa4#
      • 1...Rh5
        • 2.Qb2#
      • 1...Rh6
        • 2.Qb2#
      • 1...Rh7
        • 2.Qb2#
      • 1...Rh8
        • 2.Qb2#

This anticipates 38283(1929), 172312(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(b);S_FLIGHT::S(D)
    • R(a);N_GUARD::QAB1(A)
    • R(a);CHECK,SBLOCK::R(E)+S(D)
    • R(a);N_GUARD::QAB1(A),XR(a)
    • R(a);N_GUARD,P_PINS(D)::QAB1(A)
  • Actual
    • P(B);
    • Threat
      • R(E)+S(D)
    • Vars
      • R(a);CHECK,SBLOCK::R(E)+S(D)
      • K(b);S_FLIGHT::S(D)
      • R(a);SBLOCK::QAB1(A)
      • R(a);SBLOCK::QAR1(A)
      • R(a);N_GUARD::QAR2(A)
      • R(a);N_GUARD,P_PINS(D)::QAR2(A)
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