MESON Chess Problem Database

Problem Display
PID: 27900 (5br1/1R4n1/r1p1k3/1NP2bnp/p5pN/2B2Q1p/q1pR4/5B1K w - - 0 1)

Stocchi, Ottavio

3rd HM.=, El Diluvio, 1932-1933

5br1/1R4n1/r1p1k3/1NP2bnp/p5pN/2B2Q1p/q1pR4/5B1K

#2

9 + 14

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Bxc4#
    • 1...Qb2
      • 2.Bc4#
    • 1...Qa3
      • 2.Bc4#
    • 1...Bg6
      • 2.Qf6#
    • 1...Bh7
      • 2.Qf6#
    • 1...Bd6
      • 2.Rxd6#
    • 1...Se8
      • 2.Qxf5#
  • Tries
    • 1.Qxc6+?
      • 1...Bd6
        • 2.Rxd6#
        • 2.Qd7#
      • 1...Rxc6!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sf4#
      • 1...Bxg6
        • 2.Qf6#
      • 1...Be7
        • 2.Rxe7#
      • 1...Qc4
        • 2.Bxc4#
      • 1...Bd3
        • 2.Sd4#
      • 1...Be4
        • 2.Sc7#
      • 1...Bd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::B(A),XQ(a)
    • Q(a);N_GUARD::B(A)
    • B(f);OGATE::QAR1(E)
    • B(m);N_GUARD::R1(C),XB(m)
    • S(l);N_GUARD::QAB1(E),XB(f)
  • Tries
    • Try
      • Q(E);CHECK,XP(j)
      • Refutation
        • R(i);XQ(E)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(f);OGATE,XS(F)::QAR1(E)
      • B(m);N_GUARD::R1(I),XB(m)
      • Q(a);N_GUARD::B(A),XQ(a)
      • B(f);::S(G)
      • B(f);P_PINQ(E)::S(G)
      • B(m);N_GUARD::R1(C),XB(m)
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