MESON Chess Problem Database

Problem Display
PID: 175632 (8/Pk2P3/8/KN6/8/8/8/8 w - - 0 1)

Rohrer, CS

Philadelphia Times, 1900

8/Pk2P3/8/KN6/8/8/8/8

#2

4 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.a8B+?
      • 1...Kb8
        • 2.e8Q#
        • 2.e8R#
      • 1...Kc8
        • 2.e8Q#
      • 1...Kxa8!
  • Keys
    • 1.e8B!
      • 1...Ka8
        • 2.Bc6#
      • 1...Kc8
        • 2.a8Q#

This anticipates 183236(1907), 246323(1947), 186(1950)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XB(C)
  • Actual
    • P(D);
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT::P=Q
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