MESON Chess Problem Database

Problem Display
PID: 17649 (4R1B1/2B2pp1/brp5/3kN1Nq/1prn3p/2p2P2/4PpQ1/3R1K2 w - - 0 1)

Stocchi, Ottavio

2nd Prize, L'Italia Scacchistica, 1948

4R1B1/2B2pp1/brp5/3kN1Nq/1prn3p/2p2P2/4PpQ1/3R1K2

#2

10 + 13

3147 Chess Problems: Introduction to an Art 1963
3100 Selected Stocchi (I) 2001
56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Rd8#
    • 1...c5
      • 2.e4#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Re5#
      • 1...Kc5
        • 2.Re5#
      • 1...Rc5
        • 2.Se3#
      • 1...c5
        • 2.f4#
      • 1...Qxg5!
    • 1.Sd7?
      • threat
        • 2.Re5#
        • 2.e4#
      • 1...Qxf3
        • 2.Bxf7#
        • 2.Re5#
        • 2.Qxf3#
      • 1...Qxg5
        • 2.Bxf7#
        • 2.Qxg5#
        • 2.e4#
      • 1...Rc5
        • 2.Sxb6#
      • 1...Qg4
        • 2.Re5#
        • 2.fxg4#
      • 1...Qg6
        • 2.Re5#
      • 1...Qh7
        • 2.Bxf7#
        • 2.Re5#
      • 1...c5!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Re5#
      • 1...Kc5
        • 2.Re5#
      • 1...Qxg5
        • 2.Qxg5#
      • 1...Rc5
        • 2.Bxf7#
      • 1...c5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);P_PINP(C),SBLOCK::R(I)
    • P(k);SBLOCK::P(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(I)
      • Vars
        • K(g);N_SPINP(l),N_SPINS(e),P-FLIGHT::R(I)
        • R(d);P_PINP(C),SBLOCK::S(F)
        • P(k);SBLOCK::QAB(D)+P(E)
      • Refutation
        • Q(h);XS(G)
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);P_PINP(C),SBLOCK::S(F),XR(j)
        • Q(h);::R1(I)
      • Refutation
        • P(k);
  • Actual
    • S(F);
    • Threat
      • R1(I)
    • Vars
      • K(g);N_SPINP(l),N_SPINS(e),P-FLIGHT::R(I)
      • Q(h);OGATE,XS(G)::QAR(D),XQ(h)
      • R(d);P_PINP(C),SBLOCK::B(J),XP(l)
      • P(k);SBLOCK::S(F)
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