MESON Chess Problem Database

Problem Display
PID: 80771 (1K4Bn/1Np5/8/2Rnpk2/1p3p1B/5QR1/b3N3/b1q5 w - - 0 1)

Guidelli, Giorgio

Good Companions (May), 1918

1K4Bn/1Np5/8/2Rnpk2/1p3p1B/5QR1/b3N3/b1q5

#2

8 + 10

3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sd4#
    • 1...Se3
      • 2.Qxf4#
    • 1...Sb6
      • 2.Qd3#
    • 1...Sf6
      • 2.Rg5#
    • 1...Se7
      • 2.Qd3#
    • 1...e4
      • 2.Qh5#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Qe4#
        • 2.Qg4#
        • 2.Qh5#
      • 1...e4
        • 2.Qxe4#
        • 2.Qh5#
      • 1...Qe3
        • 2.Qg4#
        • 2.Qh5#
      • 1...Qb1
        • 2.Qg4#
        • 2.Qh5#
      • 1...Qh1
        • 2.Qg4#
        • 2.Qh5#
      • 1...Qc2
        • 2.Qg4#
        • 2.Qh5#
      • 1...Qc4
        • 2.Qg4#
        • 2.Qh5#
      • 1...Bb1
        • 2.Qg4#
        • 2.Qh5#
      • 1...Sf7
        • 2.Qe4#
        • 2.Qg4#
      • 1...Bxd5!
    • 1.Rc6?
      • threat
        • 2.Be6#
        • 2.Rg5#
      • 1...e4
        • 2.Rg5#
        • 2.Qh5#
      • 1...Qg1
        • 2.Be6#
      • 1...Sc3
        • 2.Rg5#
        • 2.Rf6#
      • 1...Se3
        • 2.Rg5#
        • 2.Rf6#
      • 1...Sb6
        • 2.Rg5#
        • 2.Rf6#
      • 1...Sf6
        • 2.Rg5#
        • 2.Rxf6#
      • 1...Se7
        • 2.Rg5#
        • 2.Rf6#
      • 1...Sf7
        • 2.Bh7#
      • 1...Qxc6!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Be6#
      • 1...e4
        • 2.Qh5#
      • 1...Sc3
        • 2.Sd4#
      • 1...Se3
        • 2.Qxf4#
      • 1...Sb6
        • 2.Qd3#
      • 1...Sf6
        • 2.Rg5#
      • 1...Se7
        • 2.Qd3#
      • 1...Sf7
        • 2.Bh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(f);S_CUTB(a),S_CUTP(g)::S(A)
    • S(f);N_GUARD,S_CUTP(g),S_CUTQ(b)::QAR1(B),XP(e)
    • S(f);S_CUTP(g)::QAB(B)
    • S(f);SBLOCK::R1(C)
    • P(g);P_SPINS(f),SBLOCK::QAR2(B)
    • P(i);N_GUARD::S(F)
  • Tries
    • Try
      • B(H);XS(f)
      • Threat
        • DUALS(3)
      • Refutation
        • B(c);XB(H)
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);::B(H)
        • S(j);N_GUARD::B(H)
      • Refutation
        • Q(b);XR(E)
  • Actual
    • S(F);
    • Threat
      • B(H)
    • Vars
      • P(g);P_SPINS(f),SBLOCK::QAR2(B)
      • S(f);S_CUTB(a),S_CUTP(g)::S(A)
      • S(f);N_GUARD,S_CUTP(g),S_CUTQ(b)::QAR1(B),XP(e)
      • S(f);S_CUTP(g)::QAB(B)
      • S(f);SBLOCK::R1(C)
      • S(j);N_GUARD::B(H)
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