MESON Chess Problem Database

Problem Display
PID: 224488 (7Q/3p1p2/8/4P2P/2B2R2/3p2P1/RN2k3/2K5 w - - 0 1)

Elson, Jacob

Philadelphia Times, 1888

7Q/3p1p2/8/4P2P/2B2R2/3p2P1/RN2k3/2K5

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Sxd3#
    • 1...Ke3
      • 2.Sd1#
  • Tries
    • 1.Bxd3+?
      • 1...Ke1
        • 2.Rf1#
      • 1...Ke3!
    • 1.Qf6?
      • threat
        • 2.Re4#
      • 1...Ke1
        • 2.Sxd3#
        • 2.Re4#
      • 1...Ke3
        • 2.Sd1#
      • 1...d5!
  • Keys
    • 1.Qe8!
      • 1...Ke1
        • 2.Sxd3#
      • 1...Ke3
        • 2.Sd1#
      • 1...d5
        • 2.exd5 ep#
      • 1...d6
        • 2.exd6#
      • 1...f5
        • 2.exf5 ep#
      • 1...f6
        • 2.exf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::S(C),XP(b)
    • K(a);N_SPINP(b),P-FLIGHT::S(C)
  • Tries
    • Try
      • B(E);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::R1(F)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(I);
      • Threat
        • R(F)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::S(C)
      • Refutation
        • P(c);
  • Actual
    • Q(I);
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::S(C),XP(b)
      • K(a);N_SPINP(b),P-FLIGHT::S(C)
      • P(c);OGATE::QAR(I)+P(G),XP(c),EP
      • P(c);OGATE::QAR(I)+P(G),XP(c)
      • P(d);OGATE::QAR(I)+P(G),XP(d),EP
      • P(d);OGATE::QAR(I)+P(G),XP(d)
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Developed and maintained by Brian Stephenson.
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