MESON Chess Problem Database

Problem Display
PID: 169267 (8/8/p7/2R5/B2K4/k7/1N6/1R6 w - - 0 1)

Kostyukov, Aleksandr Vladimirovich

2/3 Place, SuperProblem 190. TT, 2017

8/8/p7/2R5/B2K4/k7/1N6/1R6

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4+?
      • 1...Kxa4
        • 2.Ra5#
      • 1...Ka2!
    • 1.Bc2?
      • 1...Ka2
        • 2.Ra5#
      • 1...Kb4
        • 2.Sc4#
      • 1...a5!
    • 1.Ra1+?
      • 1...Kb4
        • 2.Sd3#
      • 1...Kxb2!
  • Keys
    • 1.Ra5!
      • 1...Ka2
        • 2.Bc2#
      • 1...Kb4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(C)::R1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);P-FLIGHT::R(E)
        • K(a);S_FLIGHT::R(A)+S(B)
      • Refutation
        • P(b);
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
  • Actual
    • R(E);
    • Vars
      • K(a);P-FLIGHT::R(E)+B(C)
      • K(a);S_FLIGHT::R(A)+S(B)
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