MESON Chess Problem Database

Problem Display
PID: 1990 (3n1N2/8/B2Np2Q/3k4/3P2P1/P2R4/8/K5B1 w - - 0 1)

Abbott, Joseph William

Illustrated London News, 1885

3n1N2/8/B2Np2Q/3k4/3P2P1/P2R4/8/K5B1

#2

10 + 3

3479 121 Chess Problems 1887
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qxe6#
  • Tries
    • 1.Se8?
      • threat
        • 2.Qh1#
      • 1...Ke4
        • 2.Sf6#
      • 1...Kc6
        • 2.d5#
      • 1...e5!
    • 1.Rc3?
      • 1...e5
        • 2.Rc5#
      • 1...Sc6
        • 2.Qxe6#
      • 1...Sb7
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qxe6#
      • 1...Kxd6!
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qc5#
      • 1...Sb7!
    • 1.Qg5+?
      • 1...Kc6
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qc5#
      • 1...e5!
    • 1.Qh5+?
      • 1...Kc6
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qc5#
      • 1...e5!
  • Keys
    • 1.Sb5!
      • 1...Kc4
        • 2.Sc7#
      • 1...Ke4
        • 2.Sc3#
      • 1...Kc6
        • 2.d5#
      • 1...Sc6
        • 2.Qxe6#
      • 1...Sb7
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qxe6#
      • 1...e5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,SBLOCK::QAB1(I),XP(b)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB(I)
      • Vars
        • K(a);S_FLIGHT::S(H)
        • K(a);OGATE,P_SPINP(b),S_FLIGHT::P(E)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Vars
        • P(b);::R1(D)
        • S(c);N_GUARD::QAB1(I),XP(b)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XS(H)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • K(a);P-FLIGHT,XS(H)::QAB1(I)
      • Refutation
        • S(c);
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(I)
        • K(a);OGATE,P-FLIGHT,XS(H)::QAB1(I)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(I)
        • K(a);OGATE,P-FLIGHT,XS(H)::QAB1(I)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • S(H);
    • Vars
      • K(a);S_FLIGHT::B(G)+S(H)
      • K(a);S_FLIGHT::S(H)
      • K(a);OGATE,P_SPINP(b),S_FLIGHT::P(E)
      • S(c);N_GUARD::QAB1(I),XP(b)
      • P(b);::S(H)
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