MESON Chess Problem Database

Problem Display
PID: 54199 (1R5B/6Q1/R1KNP3/5p2/1N3P2/pk1p4/pn6/b2n1B2 w - - 0 1)

Pradignat, Emile Leonard

1st Prize, The Baltimore American, 1881

1R5B/6Q1/R1KNP3/5p2/1N3P2/pk1p4/pn6/b2n1B2

#2

10 + 8

15 British Chess Magazine 1882
1253 Leeds Mercury Weekly Supplement 1882
5689 The Chess Monthly (Hoffer) 1882
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Se3
      • 2.Qc3#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sd2#
      • 1...Kc4
        • 2.Sd2#
      • 1...Sc4
        • 2.Sc5#
      • 1...d2
        • 2.Sxd2#
        • 2.Sc5#
      • 1...fxe4!
    • 1.Bxd3?
      • threat
        • 2.Sc2#
        • 2.Sd5#
        • 2.Bc2#
      • 1...Sc4
        • 2.Bc2#
        • 2.Bxc4#
      • 1...Sc3
        • 2.Bc2#
        • 2.Qxc3#
      • 1...Se3
        • 2.Sc2#
        • 2.Sd5#
        • 2.Qc3#
      • 1...Sa4
        • 2.Bc2#
        • 2.Bc4#
      • 1...Sxd3!
    • 1.Qd4?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qc4#
        • 2.Qd5#
      • 1...d2!
  • Keys
    • 1.Sb7!
      • 1...Kxb4
        • 2.Sd6#
      • 1...Kc4
        • 2.Sa5#
      • 1...Sc4
        • 2.Sc5#
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Sa5#
      • 1...d2
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::QAR1(H)
    • S(b);N_GUARD::QAR1(H),XS(b)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(f);P_SPINP(g),S_FLIGHT::S(F)
        • S(d);SBLOCK::S(F)
      • Refutation
        • P(h);XS(F)
    • Try
      • B(A);XP(g)
      • Threat
        • DUALS(3)
      • Refutation
        • S(d);XB(A)
    • Try
      • Q(H);
      • Vars
        • S(d);N_GUARD::QAB1(H),XS(d)
        • S(b);N_GUARD::QAR1(H)
        • S(b);N_GUARD::QAR1(H),XS(b)
      • Refutation
        • P(g);
  • Actual
    • S(F);
    • Vars
      • K(f);P-FLIGHT,XS(B)::R(I)+S(F)
      • K(f);P_SPINP(g),S_FLIGHT::S(F)
      • S(d);SBLOCK::S(F)
      • S(b);N_GUARD::QAR1(H)
      • S(b);N_GUARD::QAR1(H),XS(b)
      • P(g);::S(F)
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