MESON Chess Problem Database

Problem Display
PID: 106204 (8/4R3/3P1KB1/8/1B1PN3/4k3/5R1N/8 w - - 0 1)

Pramuga, Ludovit

Praca, 1947

8/4R3/3P1KB1/8/1B1PN3/4k3/5R1N/8

#2

9 + 1

6490 yacpdb 2009
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sf3?
      • 1...Kd3
        • 2.Sed2#
      • 1...Kf4!
    • 1.Sc3+?
      • 1...Kxd4
        • 2.Rf4#
      • 1...Kxf2!
    • 1.Rf3+?
      • 1...Ke2
        • 2.Sf2#
      • 1...Kxd4!
  • Keys
    • 1.Rf4!
      • 1...Ke2
        • 2.Sf2#
      • 1...Kd3
        • 2.Sd2#
      • 1...Kxd4
        • 2.Sc3#
      • 1...Kxf4
        • 2.Bd2#

This anticipates 186726(1960)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);P-FLIGHT::B(H)+S(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(D)::R(A)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(I)+S(E)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
  • Actual
    • R(A);
    • Vars
      • K(a);P-FLIGHT::R(I)+S(E)
      • K(a);P-FLIGHT::B(H)+S(E)
      • K(a);S_FLIGHT,XP(D)::R(A)+S(E)
      • K(a);S_FLIGHT,XR(A)::B(C)
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