MESON Chess Problem Database

Problem Display
PID: 159776 (8/B7/3N4/p7/kP6/8/K7/3R4 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Zheltonozhko, Vladimir Ivanovich

1st Prize, Leninska plemya, 1987

8/B7/3N4/p7/kP6/8/K7/3R4

#2

5 + 2

45 Schach 2000
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Ra1?
      • 1...axb4
        • 2.Kb2#
      • 1...Kxb4!
    • 1.Rc1?
      • 1...Kxb4
        • 2.Rc4#
      • 1...axb4!
  • Keys
    • 1.Kb2!
      • 1...Kxb4
        • 2.Rd4#
      • 1...axb4
        • 2.Ra1#

This anticipates 258136(2021)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • P(b);SBLOCK,XP(C)::R(A)+K(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • R(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(C)::R1(A)
      • Refutation
        • P(b);XP(C)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(C)::R(A)
      • P(b);SBLOCK,XP(C)::R(A)
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