MESON Chess Problem Database

Problem Display
PID: 104876 (4n3/1K1p3n/3k4/8/1N3R2/1Q6/8/2B5 w - - 0 1)

St Maurice, Ephrem

La Presse, 1933

4n3/1K1p3n/3k4/8/1N3R2/1Q6/8/2B5

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd5#
    • 1...Ke5
      • 2.Qd5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Ba3#
      • 1...Kc5
        • 2.Ba3#
      • 1...dxc6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Sd3#
        • 2.Sc6#
      • 1...Kc5
        • 2.Sa2#
        • 2.Sc2#
        • 2.Sd3#
        • 2.Sd5#
        • 2.Sa6#
        • 2.Sc6#
        • 2.Qd5#
      • 1...Ke5
        • 2.Sd3#
      • 1...Ke7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • S(C);
      • Threat
        • B(A)
      • Vars
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • P(b);XS(C)
  • Actual
    • B(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::B(A)+S(C),DCHECK
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