MESON Chess Problem Database

Problem Display
PID: 224601 (8/2R5/1n6/1K6/3k3B/8/2P1R3/8 w - - 0 1)

Jokisch, Louis H

Nashville Daily American, 1888

8/2R5/1n6/1K6/3k3B/8/2P1R3/8

#2

5 + 2

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Rc4#
  • Tries
    • 1.Rc5?
      • threat
        • 2.Bf2#
        • 2.Bf6#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sd7
        • 2.Bf2#
      • 1...Sc4!
    • 1.Rd7+?
      • 1...Kc3
        • 2.Bf6#
      • 1...Sd5
        • 2.Bf6#
      • 1...Sxd7!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Rd3#
      • 1...Kxc3
        • 2.Bf6#
      • 1...Kd5
        • 2.Rd3#

This anticipates 150995(1896), 9647(1907), 196884(1919), 202419(1923), 205508(1925), 108846(1926), 246621(1998), 245543(2011)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(b);N_GUARD,SBLOCK::R1(E)
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,SBLOCK::R1(E)
        • S(b);::B(C)
      • Refutation
        • S(b);
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::B(C)
        • S(b);P_SPINS(b)::B(C)
      • Refutation
        • S(b);XR(E)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • K(a);S_FLIGHT,XR(E)::B(C)
      • K(a);P-FLIGHT::R(E)
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