MESON Chess Problem Database

Problem Display
PID: 161799 (1n2R3/bp6/3p4/N1Bk2K1/5Pn1/4p3/b3N3/2Q5 w - - 0 1)

Stoyanov, Kiril N

Chess, 1956

1n2R3/bp6/3p4/N1Bk2K1/5Pn1/4p3/b3N3/2Q5

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bxc5
      • 2.Qh1#
    • 1...dxc5
      • 2.Qd1#
  • Tries
    • 1.Bb6?
      • threat
        • 2.Sc3#
        • 2.Qd1#
        • 2.Qh1#
      • 1...Se5
        • 2.Sc3#
      • 1...Bb3
        • 2.Sc3#
        • 2.Qh1#
      • 1...Bb1
        • 2.Sc3#
        • 2.Qc4#
      • 1...Bc4
        • 2.Sc3#
        • 2.Qh1#
        • 2.Qxc4#
      • 1...Sf2
        • 2.Sc3#
      • 1...Sh2
        • 2.Sc3#
        • 2.Qd1#
      • 1...Sf6
        • 2.Sc3#
        • 2.Qd1#
      • 1...Sc6
        • 2.Sc3#
        • 2.Qh1#
      • 1...Bxb6!
    • 1.Bxa7?
      • threat
        • 2.Sc3#
        • 2.Qd1#
        • 2.Qh1#
      • 1...Se5
        • 2.Sc3#
      • 1...Bb3
        • 2.Sc3#
        • 2.Qh1#
      • 1...Bb1
        • 2.Sc3#
        • 2.Qc4#
      • 1...Bc4
        • 2.Sc3#
        • 2.Qh1#
        • 2.Qxc4#
      • 1...Sf2
        • 2.Sc3#
      • 1...Sh2
        • 2.Sc3#
        • 2.Qd1#
      • 1...Sf6
        • 2.Sc3#
        • 2.Qd1#
      • 1...Sc6
        • 2.Sc3#
        • 2.Qh1#
      • 1...b6!
    • 1.Qxe3?
      • threat
        • 2.Sc3#
        • 2.Qd4#
      • 1...Bxc5
        • 2.Sc3#
        • 2.Qf3#
        • 2.Qe4#
        • 2.Qe6#
      • 1...dxc5
        • 2.Qd2#
        • 2.Qd3#
        • 2.Qe6#
      • 1...Sc6
        • 2.Sc3#
      • 1...Sxe3!
    • 1.f5?
      • threat
        • 2.Sf4#
      • 1...Bxc5
        • 2.Qh1#
      • 1...dxc5
        • 2.Qd1#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Se5!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Sc3#
      • 1...Bxc5
        • 2.Qxa2#
      • 1...dxc5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(f);SBLOCK,XB(E)::QAB(A)
    • P(e);SBLOCK,XB(E)::QAR(A)
  • Tries
    • Try
      • B(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(B)
      • Refutation
        • B(f);XB(E)
    • Try
      • B(E);XB(f)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(B)
      • Refutation
        • P(g);
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(h);::S(B)
      • Refutation
        • S(c);XQ(A)
    • Try
      • P(C);
      • Threat
        • S(B)
      • Vars
        • B(f);SBLOCK,XB(E)::QAB(A)
        • P(e);SBLOCK,XB(E)::QAR(A)
        • B(a);N_GUARD::QAB1(A),XB(a)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • B(f);SBLOCK,XB(E)::QAB(A),XB(a)
      • P(e);SBLOCK,XB(E)::QAR2(A)
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