MESON Chess Problem Database

Problem Display
PID: 102401 (4RK2/8/3RP2p/3N1kpP/4n1n1/4pNP1/5p1b/1Q1B4 w - - 0 1)

Fontaine, Leon

Le Courrier des Echecs, 1956

4RK2/8/3RP2p/3N1kpP/4n1n1/4pNP1/5p1b/1Q1B4

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sd4#
    • 1...Sf6
      • 2.Sxe3#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Se7#
      • 1...Se5
        • 2.Sd4#
        • 2.Sxe3#
      • 1...Sf6
        • 2.Sxe3#
      • 1...Bxg3!
    • 1.Bc2?
      • threat
        • 2.Bxe4#
      • 1...Sf6
        • 2.Sxe3#
      • 1...Se5!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qh7#
      • 1...Sef6
        • 2.Se7#
      • 1...Se5
        • 2.Sd4#
      • 1...Sgf6
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(e);SBLOCK::S(C)
    • S(e);N_GUARD,SBLOCK::S(E),XP(c)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • S(E)
      • Vars
        • S(e);N_GUARD::S(E),XP(c)
      • Refutation
        • B(b);XP(D)
    • Try
      • B(B);
      • Threat
        • B(B),XS(d)
      • Vars
        • S(e);N_GUARD,SBLOCK::S(E),XP(c)
      • Refutation
        • S(e);
  • Actual
    • Q(A);N_PINS(d)
    • Threat
      • QAB(A)
    • Vars
      • S(d);SBLOCK::S(E)
      • S(e);SBLOCK::S(C)
      • S(e);N_GUARD,SBLOCK::S(E),XP(c)
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