MESON Chess Problem Database

Problem Display
PID: 21069 (8/3N1Rp1/1Kn2rp1/2B5/5kPP/4bBp1/3Q2n1/4N3 w - - 0 1)

Guidelli, Giorgio

2nd Prize, Good Companions (February), 1916

8/3N1Rp1/1Kn2rp1/2B5/5kPP/4bBp1/3Q2n1/4N3

#2

9 + 8

3132 The Good Companion Two-Mover 1922
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe1
      • 2.Qxe3#
    • 1...Sxh4
      • 2.Bxe3#
      • 2.Qxe3#
    • 1...Sb4+
      • 2.Qd6#
    • 1...Sd4+
      • 2.Bd6#
    • 1...Sa5+
      • 2.Qd6#
    • 1...Sa7+
      • 2.Qd6#
    • 1...Se7+
      • 2.Qd6#
    • 1...Sb8+
      • 2.Qd6#
    • 1...Sd8+
      • 2.Qd6#
  • Tries
    • 1.Sxf6?
      • threat
        • 2.Sd7#
      • 1...Ke5
        • 2.Qd6#
      • 1...Sxh4
        • 2.Qxe3#
      • 1...Sd4
        • 2.Bd6#
      • 1...Se5
        • 2.Sd5#
        • 2.Sh5#
      • 1...Se7
        • 2.Qd6#
      • 1...Sd8
        • 2.Qd6#
      • 1...gxf6!
    • 1.Qd4+?
      • 1...Sxd4+
        • 2.Bd6#
      • 1...Bxd4!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Sxg6#
      • 1...Sb4+
        • 2.Qd6#
      • 1...Sd4+
        • 2.Bd6#
      • 1...Sa5+
        • 2.Qd6#
      • 1...Se5+
        • 2.Se6#
      • 1...Sa7+
        • 2.Qd6#
      • 1...Se7+
        • 2.Qd6#
      • 1...Sb8+
        • 2.Qd6#
      • 1...Sd8+
        • 2.Qd6#
      • 1...Ke5
        • 2.Sd3#
      • 1...Sxe1
        • 2.Qxe3#
      • 1...Sxh4
        • 2.Qxe3#
      • 1...g5
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,XS(A)::QAB1(B),XB(b)
    • S(e);CHECK,N_GUARD::QAB(B)
    • S(e);CHECK,N_PINB(F)::B(F)
  • Tries
    • Try
      • S(H);XR(f)
      • Threat
        • R(I)+S(H)
      • Vars
        • K(d);N_SPINB(b),S_FLIGHT::QAB1(B)
        • S(a);N_GUARD,XP(E)::QAB1(B),XB(b)
        • S(e);N_PINB(F)::B(F)
        • S(e);N_GUARD::QAB(B)
      • Refutation
        • P(h);P_SPINP(h),XS(H)
    • Try
      • Q(B);CHECK,N_PINB(b),N_SPINB(F)
      • Vars
        • S(e);CHECK,XQ(B)::B(F)
      • Refutation
        • B(b);P_PINB(F),XQ(B)
  • Actual
    • S(H);
    • Threat
      • S(H),XP(g)
    • Vars
      • S(e);CHECK,N_GUARD::QAB(B)
      • S(e);CHECK,N_PINB(F)::B(F)
      • S(e);CHECK,SBLOCK::S(H)
      • K(d);N_SPINB(b),N_SPINR(f),S_FLIGHT::S(A)
      • S(a);N_GUARD,XS(A)::QAB1(B),XB(b)
      • S(a);N_GUARD,XP(E)::QAB1(B),XB(b)
      • P(g);::S(H)
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