MESON Chess Problem Database

Problem Display
PID: 24212 (8/8/8/8/2R5/5N1p/5k2/3K2bQ w - - 0 1)

Monreal, Pierre

des Marands, Henri

1st Prize, La Marseillaise, 1945

8/8/8/8/2R5/5N1p/5k2/3K2bQ

#2

4 + 3

78 Bulletin Ouvrier des Echecs 1955
274 diagrammes 1973
2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Qxg1#
  • Tries
    • 1.Se1?
      • threat
        • 2.Qf3#
      • 1...Kf1
        • 2.Rf4#
      • 1...Ke3
        • 2.Qf3#
        • 2.Qxg1#
      • 1...Kg3
        • 2.Qxg1#
      • 1...Bh2!
    • 1.Sd2?
      • threat
        • 2.Qf3#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kg3
        • 2.Qxg1#
      • 1...Bh2!
    • 1.Sh2?
      • threat
        • 2.Qf3#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kg3
        • 2.Qxg1#
      • 1...Bxh2!
    • 1.Se5?
      • threat
        • 2.Qf3#
      • 1...Kf1
        • 2.Rf4#
      • 1...Ke3
        • 2.Qf3#
        • 2.Qxg1#
      • 1...Kg3
        • 2.Qxg1#
      • 1...Bh2!
    • 1.Sg5?
      • threat
        • 2.Qf3#
      • 1...Kf1
        • 2.Rf4#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kg3
        • 2.Qxg1#
      • 1...Bh2!
  • Keys
    • 1.Sh4!
      • threat
        • 2.Qf3#
      • 1...Kf1
        • 2.Rf4#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kg3
        • 2.Qxg1#
      • 1...Bh2
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINB(a)::QAR1(B),XB(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::R(D)
        • K(b);S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • B(a);XS(C)
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::R(D)
        • K(b);S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::R(D)
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAR2(B),XB(a)
      • Refutation
        • B(a);
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a)::R(D)
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);S_FLIGHT::QAR2(B),XB(a)
      • B(a);OGATE::QAB1(B)
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