MESON Chess Problem Database

Problem Display
PID: 220234 (1N6/1pR5/N7/k7/p1P5/p5B1/K7/8 w - - 0 1)

Ketzscher, Robert

Freie Presse, 1990

1N6/1pR5/N7/k7/p1P5/p5B1/K7/8

#2

6 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Be1#
  • Tries
    • 1.Bf2?
      • 1...bxa6
        • 2.Sc6#
      • 1...b6
        • 2.Be1#
      • 1...b5!
    • 1.Rc5+?
      • 1...b5
        • 2.Bc7#
        • 2.Rxb5#
      • 1...Kb6!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Be1#
      • 1...bxc6
        • 2.Bc7#
      • 1...b5
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(d);SBLOCK::B(B)
  • Tries
    • Try
      • B(B);
      • Vars
        • P(d);N_GUARD,SBLOCK,XS(D)::S(F)
        • P(d);SBLOCK::B(B)
      • Refutation
        • P(d);
    • Try
      • R(E);CHECK
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • B(B)
    • Vars
      • P(d);N_GUARD,XR(E)::B(B)
      • P(d);N_GUARD::B(B)
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