MESON Chess Problem Database

Problem Display
PID: 78074 (4N3/7p/6pr/P3kBrN/2Pp2P1/8/8/Q3K3 w - - 0 1)

Lazard, Frederic

L'Echiquier Francais, 1906

4N3/7p/6pr/P3kBrN/2Pp2P1/8/8/Q3K3

#2

8 + 6

6315 Mes problemes et etudes d'echecs (Lazard) 1929

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qe7#
        • 2.Qg3#
      • 1...Rxg4
        • 2.Qc5#
      • 1...Rxf5
        • 2.Qe7#
      • 1...Rgxh5
        • 2.Qd6#
        • 2.Qg3#
      • 1...Rhxh5
        • 2.Qd6#
        • 2.Qg3#
      • 1...gxh5
        • 2.Qg3#
      • 1...d3
        • 2.Qb2#
        • 2.Qc5#
        • 2.Qd6#
        • 2.Qa1#
        • 2.Qc3#
      • 1...gxf5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qe2#
        • 2.Qh2#
        • 2.Qb5#
        • 2.Qb8#
      • 1...Rxg4
        • 2.Qb5#
      • 1...Rxf5
        • 2.Qe2#
      • 1...Rgxh5
        • 2.Qb8#
      • 1...Rhxh5
        • 2.Qb8#
      • 1...gxf5
        • 2.Qe2#
      • 1...gxh5
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • DUALS(4)
      • Vars
        • R(c);XP(D)::QAR2(A)
        • R(c);XB(F)::QAR2(A)
        • P(d);XS(G)::QAB(A)
      • Refutation
        • P(d);XB(F)
  • Actual
    • Q(A);
    • Threat
      • DUALS(4)
    • Vars
      • R(c);XP(D)::QAR(A)
      • R(c);XB(F)::QAR(A)
      • R(c);XS(G)::QAB(A)
      • R(e);XS(G)::QAB(A)
      • P(d);XB(F)::QAR(A)
      • P(d);XS(G)::QAB(A)
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