MESON Chess Problem Database

Problem Display
PID: 107900 (3Q3K/5k2/5N1p/5p2/8/8/8/2B5 w - - 0 1)

Chatillon, Octave H

La Presse, 1900

3Q3K/5k2/5N1p/5p2/8/8/8/2B5

#2

4 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd5?
      • threat
        • 2.Qg8#
      • 1...Kg6
        • 2.Qe8#
      • 1...Ke6!
    • 1.Qe7+?
      • 1...Kg6
        • 2.Qg7#
      • 1...Kxe7!
    • 1.Qd7+?
      • 1...Kg6
        • 2.Qg7#
      • 1...Kf8
        • 2.Sh7#
        • 2.Ba3#
        • 2.Bxh6#
        • 2.Qe8#
        • 2.Qg7#
      • 1...Kxf6!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Qe8#
      • 1...Ke6
        • 2.Qd7#
      • 1...Kg6
        • 2.Qg8#

This anticipates 33690(2001)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(c);S_FLIGHT::QAB(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT,XS(B)
  • Actual
    • B(A);
    • Threat
      • QAB1(C)
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • K(c);S_FLIGHT::QAR2(C)
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