MESON Chess Problem Database

Problem Display
PID: 151881 (K7/4n3/3p1ppN/1R1Bk3/8/5p1b/Q3Nprn/b5r1 w - - 0 1)

Guidelli, Giorgio

Good Companions (February), 1915

K7/4n3/3p1ppN/1R1Bk3/8/5p1b/Q3Nprn/b5r1

#2

6 + 12

15 British Chess Magazine 1915

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Qxb2#
    • 1...Bf5
      • 2.Sf7#
    • 1...Sf1
      • 2.Qxa1#
    • 1...Sxd5
      • 2.Qxd5#
    • 1...Sf5
      • 2.Sf7#
    • 1...f1S
      • 2.Qxa1#
    • 1...f1B
      • 2.Qxa1#
  • Tries
    • 1.Bxf3+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...d5!
    • 1.Bc6+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...d5!
    • 1.Bb7+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...d5!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qe3#
      • 1...f5
        • 2.Qxe7#
      • 1...f1S
        • 2.Qxa1#
      • 1...Rg4
        • 2.Qxe7#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bf5
        • 2.Sf7#
      • 1...Sf1
        • 2.Qxa1#
      • 1...Sg4
        • 2.Qxe7#
      • 1...Sf5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(g);SBLOCK::S(E)
    • S(e);S_CUTR(b)::QAB(A),XB(a)
    • S(l);OGATE,P_SPINS(l),XB(D)::QAR1(A),XS(l)
    • S(l);SBLOCK::S(E)
    • P(c);S_CUTR(b)::QAB(A),XB(a)
  • Tries
    • Try
      • B(D);CHECK,XP(f)
      • Vars
        • S(l);N_GUARD,P_SPINS(l)::QAR1(A),XS(l)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • B(D);CHECK
      • Vars
        • S(l);N_GUARD,P_SPINS(l)::QAR1(A),XS(l)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • B(D);CHECK
      • Vars
        • S(l);N_GUARD,P_SPINS(l)::QAR1(A),XS(l)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • P(j);S_CUTB(g)::QAR2(A),XS(l)
      • P(c);S_CUTR(b)::QAB(A),XB(a)
      • R(d);S_CUTB(g)::QAR2(A),XS(l)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(g);SBLOCK::S(E)
      • S(e);S_CUTR(b)::QAB(A),XB(a)
      • S(e);S_CUTB(g)::QAR2(A),XS(l)
      • S(l);SBLOCK::S(E)
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