MESON Chess Problem Database

Problem Display
PID: 102836 (4N3/4p3/B7/3k2K1/3N4/8/8/5Q2 w - - 0 1)

Commandeur, Henri

Bulletin de la FFE, 1935

4N3/4p3/B7/3k2K1/3N4/8/8/5Q2

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc5
        • 2.Qb5#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#
      • 1...e5
        • 2.Qc4#
      • 1...e6!
    • 1.Sf3?
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qb5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6!
    • 1.Se6?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Ke4!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Sf3#
        • 2.Sc6#
      • 1...Ke4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT,XS(B)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT,XS(B)::QAB1(A)
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