MESON Chess Problem Database

Problem Display
PID: 64215 (4KB2/7N/p2N3R/3k4/2Rn1PP1/1p2pp2/1np5/Q2brB2 w - - 0 1)

Stocchi, Ottavio

5th Prize, Panorama, 1952

4KB2/7N/p2N3R/3k4/2Rn1PP1/1p2pp2/1np5/Q2brB2

#2

10 + 10

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qxd4#
    • 1...Sa4
      • 2.Qxd4#
    • 1...Se2
      • 2.Qa5#
    • 1...Sf5
      • 2.Qa5#
    • 1...Se6
      • 2.Sf6#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Be4#
      • 1...Sxd3
        • 2.Qxd4#
      • 1...Sxc4!
    • 1.Rh5+?
      • 1...Ke6
        • 2.Re5#
      • 1...Sf5!
    • 1.Qxb2?
      • threat
        • 2.Qxd4#
      • 1...Se2
        • 2.Qe5#
      • 1...Sb5
        • 2.Qe5#
      • 1...Sf5
        • 2.Qe5#
      • 1...Se6
        • 2.Sf6#
        • 2.Qe5#
      • 1...Sc6!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rxd4#
      • 1...Ke4
        • 2.Rxd4#
      • 1...Sxc4
        • 2.Qxd4#
      • 1...Sxf5
        • 2.Qa5#
      • 1...Se2
        • 2.Sxe3#
      • 1...Sb5
        • 2.Se7#
      • 1...Sc6
        • 2.Rd6#
      • 1...Se6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(c);OGATE::QAR1(A),XS(h)
    • S(h);N_GUARD::QAR(A)
    • S(h);SBLOCK::S(H)
  • Tries
    • Try
      • B(B);
      • Threat
        • B(B)
      • Vars
        • S(c);OGATE,XB(B)::QAR1(A),XS(h)
      • Refutation
        • S(c);XR(C)
    • Try
      • R(G);CHECK
      • Vars
        • K(i);S_FLIGHT::R1(G)
      • Refutation
        • S(h);P_SPINS(h)
    • Try
      • Q(A);XS(c)
      • Threat
        • QAR1(A),XS(h)
      • Vars
        • S(h);OGATE::QAR1(A)
      • Refutation
        • S(h);
  • Actual
    • S(F);
    • Threat
      • R1(C),XS(h)
    • Vars
      • K(i);P_SPINS(h),S_FLIGHT::R1(C),XS(h)
      • S(c);OGATE,XR(C)::QAR1(A),XS(h)
      • S(h);N_GUARD,XS(F)::QAR(A)
      • S(h);S_CUTR(b)::S(F),XP(f)
      • S(h);::S(F)
      • S(h);::R1(G)
      • S(h);SBLOCK::S(H)
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