MESON Chess Problem Database

Problem Display
PID: 33634 (3N2n1/r1pp2Q1/2p2r2/1p2k1P1/1B1n3N/1pKP2P1/2b1P3/4R2B w - - 0 1)

Stocchi, Ottavio

Sjakk-Nytt, 1949

3N2n1/r1pp2Q1/2p2r2/1p2k1P1/1B1n3N/1pKP2P1/2b1P3/4R2B

#2

11 + 11

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2+
      • 2.Rxe2#
    • 1...Sf5
      • 2.Sg6#
    • 1...Se6
      • 2.Sf7#
    • 1...Sh6
      • 2.Qxf6#
    • 1...Se7
      • 2.Qxf6#
  • Tries
    • 1.Qe7+?
      • 1...Re6
        • 2.Sf7#
      • 1...Se6
        • 2.d4#
      • 1...Sxe7!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qxd4#
      • 1...Sxe2+
        • 2.Rxe2#
      • 1...Rf4
        • 2.Sg6#
      • 1...Rd6
        • 2.Sf7#
      • 1...Sf3
        • 2.exf3#
      • 1...Sf5
        • 2.Sf3#
      • 1...Se6
        • 2.Sxc6#
      • 1...c5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(c);CHECK,OGATE,P_SPINS(c),XP(C)::R(A),XS(c)
    • S(c);SBLOCK::S(H)
    • S(c);SBLOCK::S(K)
    • S(k);N_GUARD::QAB1(J),XR(g)
  • Tries
    • Try
      • Q(J);CHECK,N_PINR(g)
      • Vars
        • R(g);P_SPINR(g)::S(K)
        • S(c);OGATE,P_SPINS(c)::P(E)
      • Refutation
        • S(k);XQ(J)
  • Actual
    • Q(J);N_PINR(g),XP(j)
    • Threat
      • QAB1(J),XS(c)
    • Vars
      • S(c);CHECK,OGATE,P_SPINS(c),XP(C)::R(A),XS(c)
      • R(g);N_GUARD::S(H)
      • R(g);N_GUARD::S(K)
      • S(c);OGATE::R(A)+P(C),XS(c)
      • S(c);N_GUARD,S_CUTR(g)::S(H)
      • S(c);N_GUARD,S_CUTR(g)::S(K),XP(f)
      • P(f);N_GUARD::QAR1(J)
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