MESON Chess Problem Database

Problem Display
PID: 238581 (4k1K1/3RN3/1N6/7R/5b2/8/8/8 w - - 0 1)

Lincoln, Robert A

Problemist Ukraini, 2016

4k1K1/3RN3/1N6/7R/5b2/8/8/8

#2

5 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Sg7#
      • 1...Bh6
        • 2.Sd6#
      • 1...Be5!
    • 1.Sc6?
      • threat
        • 2.Re7#
        • 2.Rd8#
      • 1...Bd6
        • 2.Rd8#
      • 1...Bc7
        • 2.Re7#
      • 1...Bg5!
  • Keys
    • 1.Sed5!
      • threat
        • 2.Sf6#
      • 1...Be5
        • 2.Rxe5#
      • 1...Bg5
        • 2.Sc7#

Anticipated by 45963(2002)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • B(a);N_GUARD::S(D)
      • Refutation
        • B(a);
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::R1(C)
      • Refutation
        • B(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • B(a);N_GUARD::R(A),XB(a)
      • B(a);N_GUARD::S(D)
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