MESON Chess Problem Database

Problem Display
PID: 224218 (6n1/8/1Q5N/6kp/R7/8/5K2/8 w - - 0 1)

Fischer, Franz

Illustrirte Familien-Journal (Leipzig), 1887

6n1/8/1Q5N/6kp/R7/8/5K2/8

#2

4 + 3

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sxg8?
      • threat
        • 2.Qf6#
      • 1...Kf5
        • 2.Qf6#
      • 1...h4!
    • 1.Ra5+?
      • 1...Kf4
        • 2.Qe3#
        • 2.Qd4#
        • 2.Qb4#
      • 1...Kh4!
  • Keys
    • 1.Rf4!
      • 1...Kxf4
        • 2.Qe3#
      • 1...Sxh6
        • 2.Qf6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...h4
        • 2.Rf5#
      • 1...Se7
        • 2.Qf6#

Anticipated by 1962(1859)

This anticipates 121007(1899), 205348(1949)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);XS(c)
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • R(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XR(B)::QAB1(C)
      • S(c);N_GUARD,XS(D)::QAB1(C)
      • S(c);N_GUARD::QAB1(C),XS(c)
      • P(b);SBLOCK::R1(B)
      • S(c);N_GUARD::QAB1(C)
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