MESON Chess Problem Database

Problem Display
PID: 141186 (8/4b3/r3p3/8/N1p1kp2/3R3Q/5P2/4NK2 w - - 0 1)

Pradignat, Emile Leonard

ABC des Echecs, 1906

8/4b3/r3p3/8/N1p1kp2/3R3Q/5P2/4NK2

#2

6 + 6

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa4
      • 2.Qxe6#
    • 1...Ra7
      • 2.Qxe6#
    • 1...Ra8
      • 2.Qxe6#
    • 1...e5
      • 2.Sc3#
      • 2.f3#
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rd4#
        • 2.Qh7#
      • 1...Kxd3
        • 2.Qh7#
      • 1...cxd3
        • 2.Sc3#
      • 1...Ra5
        • 2.Rd4#
      • 1...Rd6
        • 2.Sc5#
        • 2.Qh7#
      • 1...Bh4
        • 2.Sc5#
        • 2.Rd4#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Qh7#
      • 1...Bf6
        • 2.Sc5#
        • 2.Qh7#
      • 1...e5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(d);N_GUARD,XS(F)::QAR2(E),XP(e)
    • R(d);N_GUARD::QAR2(E),XP(e)
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XR(D)::QAB(E)
      • P(a);SBLOCK,XR(D)::S(F)
      • R(d);::R1(D)
      • P(e);SBLOCK::S(A)
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