MESON Chess Problem Database

Problem Display
PID: 216568 (8/5Q2/3P1N2/2K3p1/4pkPp/5p1P/1B3Nn1/6R1 w - - 0 1)

Pradignat, Emile Leonard

Deutsche Schachzeitung, 1884

8/5Q2/3P1N2/2K3p1/4pkPp/5p1P/1B3Nn1/6R1

#2

9 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Sd5#
    • 1...Se3
      • 2.Sd5#
      • 2.Sh5#
    • 1...e3
      • 2.S6e4#
      • 2.Sh5#
  • Tries
    • 1.Kd4?
      • threat
        • 2.S6xe4#
        • 2.Sh5#
      • 1...Se3
        • 2.Sd5#
        • 2.Sh5#
      • 1...e3
        • 2.S6e4#
        • 2.Sh5#
      • 1...Kg3!
    • 1.Sh1?
      • threat
        • 2.Sd5#
      • 1...e3
        • 2.Qc4#
      • 1...Ke3!
    • 1.Bd4?
      • threat
        • 2.S6xe4#
        • 2.Sh5#
      • 1...e3
        • 2.S6e4#
        • 2.Sh5#
      • 1...Se3
        • 2.Sd5#
        • 2.Sh5#
      • 1...Kg3!
    • 1.Be5+?
      • 1...Kxe5
        • 2.Sd7#
      • 1...Ke3!
  • Keys
    • 1.Qa2!
      • 1...Ke3
        • 2.Bc1#
      • 1...Kg3
        • 2.Be5#
      • 1...e3
        • 2.Sh5#
      • 1...Se1
        • 2.Sd5#
      • 1...Se3
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);::QAR(I)+S(H),DCHECK
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • K(d);P_SPINS(a),S_FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR(I)+S(H),DCHECK
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(I)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Refutation
        • K(d);P_SPINS(a),S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(d);S_FLIGHT,XB(B)::S(H)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(d);S_FLIGHT::B(B)
      • K(d);P_SPINS(a),S_FLIGHT::B(B)
      • P(c);SBLOCK::S(H)
      • S(a);::S(H)
      • S(a);SBLOCK::S(H)
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