MESON Chess Problem Database

Problem Display
PID: 87549 (2K1kBB1/3p1pP1/8/8/4P3/4R3/8/8 w - - 0 1)

Ivanov, E

Problemista, 1961

2K1kBB1/3p1pP1/8/8/4P3/4R3/8/8

#2

6 + 3

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.exd5#
    • 1...f5
      • 2.exf5#
  • Tries
    • 1.Bd6?
      • 1...f5
        • 2.exf5#
      • 1...f6!
    • 1.Bh7?
      • 1...f5
        • 2.Bg6#
      • 1...f6
        • 2.Bg6#
      • 1...d5
        • 2.exd5#
      • 1...d6!
  • Keys
    • 1.e5!
      • 1...f6
        • 2.exf6#
      • 1...d5
        • 2.exd5 ep#
      • 1...d6
        • 2.exd6#
      • 1...f5
        • 2.exf5 ep#

This anticipates 24121(1982)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::R(A)+P(B),XP(a)
    • P(b);OGATE::R(A)+P(B),XP(b)
  • Tries
    • Try
      • B(E);
      • Vars
        • P(b);OGATE::R(A)+P(B),XP(b)
      • Refutation
        • P(b);
    • Try
      • B(F);
      • Vars
        • P(b);OGATEB::B(F)
        • P(a);OGATE::R(A)+P(B),XP(a)
      • Refutation
        • P(a);
  • Actual
    • P(B);
    • Vars
      • P(b);OGATE::R(A)+P(B),XP(b)
      • P(a);OGATE::R(A)+P(B),XP(a),EP
      • P(a);OGATE::R(A)+P(B),XP(a)
      • P(b);OGATE::R(A)+P(B),XP(b),EP
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