MESON Chess Problem Database

Problem Display
PID: 29873 (3K2b1/2R1N3/3p4/5Q1r/1P1kn3/1PN1b1B1/4Rn2/8 w - - 0 1)

Stocchi, Ottavio

3rd HM., Die Schwalbe 085. TT, 1947-1948

3K2b1/2R1N3/3p4/5Q1r/1P1kn3/1PN1b1B1/4Rn2/8

#2

9 + 7

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxe4#
    • 1...Sh1
      • 2.Qxe4#
    • 1...Sd3
      • 2.Sb5#
      • 2.Qxe4#
    • 1...Sh3
      • 2.Qxe4#
    • 1...Sg4
      • 2.Qxe4#
    • 1...Sd2
      • 2.Sb5#
    • 1...Sxc3
      • 2.Sc6#
    • 1...Sxg3
      • 2.Sb5#
    • 1...Sc5
      • 2.Sb5#
    • 1...Sg5
      • 2.Sb5#
    • 1...Sf6
      • 2.Sb5#
  • Tries
    • 1.Rd2+?
      • 1...Sd3
        • 2.Se2#
        • 2.Sb5#
        • 2.Qxe4#
      • 1...Sxd2
        • 2.Se2#
        • 2.Sb5#
      • 1...Bxd2!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qxe3#
      • 1...Kd3
        • 2.Qxe3#
      • 1...Bc1
        • 2.Sc6#
      • 1...Bd2
        • 2.Sc6#
      • 1...Bf4
        • 2.Sc6#
      • 1...Bg5
        • 2.Sb5#
      • 1...Bh6
        • 2.Sc6#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • S(a);N_GUARD::QAR1(F),XS(d)
    • S(d);::S(C)
    • S(d);SBLOCK,XS(C)::S(H)
    • S(d);XB(D)::S(C)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • B(b);XR(A)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F),XB(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::QAR1(F),XB(b)
      • B(b);::S(H)
      • B(b);P_PINS(H),S_CUTR(e)::S(C)
      • S(a);N_GUARD::QAR1(F),XS(d)
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