MESON Chess Problem Database

Problem Display
PID: 85798 (7N/4K3/5p2/6k1/2R5/7R/7P/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1972

7N/4K3/5p2/6k1/2R5/7R/7P/8

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Rh5#
  • Tries
    • 1.Kd6?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5!
    • 1.Kd7?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5!
    • 1.Kf7?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5!
    • 1.Rhh4?
      • 1...Kf5
        • 2.Rc5#
        • 2.Rh5#
      • 1...f5!
    • 1.Rh6?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5
        • 2.Sf7#
      • 1...Kxh6!
    • 1.Ra4?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5!
    • 1.Rb4?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5!
    • 1.Rd4?
      • 1...Kf5
        • 2.Rh5#
      • 1...f5!
  • Keys
    • 1.Rh7!
      • 1...Kf5
        • 2.Rh5#
      • 1...f5
        • 2.h4#

Anticipated by 108332(1911)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
        • P(b);SBLOCK::S(E)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT::R(B)
      • P(b);SBLOCK::P(A)
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