MESON Chess Problem Database

Problem Display
PID: 175567 (3r1N2/Q6p/2R4P/4k3/4p3/3pN3/3p4/3K4 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Wiener Schachzeitung, 1900

3r1N2/Q6p/2R4P/4k3/4p3/3pN3/3p4/3K4

#2

6 + 6

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc7+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Kd4!
    • 1.Qe7+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4!
  • Keys
    • 1.Rf6!
      • 1...Kxf6
        • 2.Qg7#
      • 1...Rxf8
        • 2.Qa1#
      • 1...Rd4
        • 2.Qe7#
      • 1...Rd5
        • 2.Sg4#
      • 1...Rd6
        • 2.Rf5#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Ra8
        • 2.Sd7#
      • 1...Rb8
        • 2.Sd7#
      • 1...Rc8
        • 2.Sd7#
      • 1...Re8
        • 2.Sd7#
        • 2.Qa1#

Anticipated by 54241(0000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAB1(E),XR(f)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(E)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • R(f);N_GUARD,XS(F)::QAB(E)
      • R(f);SBLOCK::QAR2(E)
      • R(f);SBLOCK::S(B)
      • R(f);SBLOCK::R1(C)
      • R(f);N_GUARD::S(F),XR(f)
      • R(f);N_GUARD::S(F)
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