MESON Chess Problem Database

Problem Display
PID: 15207 (8/8/8/7p/7B/2K5/R5P1/3k4 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1981

8/8/8/7p/7B/2K5/R5P1/3k4

#2

4 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Kc1
      • 2.Ra1#
  • Tries
    • 1.Bf2?
      • 1...Kc1
        • 2.Ra1#
      • 1...h4!
    • 1.Bg3?
      • 1...Kc1
        • 2.Ra1#
      • 1...h4!
    • 1.Re2?
      • threat
        • 2.Re1#
      • 1...Kc1
        • 2.Re1#
      • 1...Kxe2!
    • 1.Rf2?
      • 1...Kc1
        • 2.Rf1#
      • 1...Ke1!
    • 1.Ra3?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke2!
    • 1.Ra4?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke2!
    • 1.Ra5?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke2!
    • 1.Ra6?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke2!
    • 1.Ra7?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke2!
    • 1.Ra8?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke2!
    • 1.g3?
      • 1...Kc1
        • 2.Ra1#
      • 1...Ke1!
    • 1.g4?
      • 1...Kc1
        • 2.Ra1#
      • 1...hxg4!
  • Keys
    • 1.Ra1+!
      • 1...Ke2
        • 2.Re1#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R(A)
  • Tries
    • Try
      • B(D);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(B);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);XP(B)
  • Actual
    • R(A);CHECK
    • Vars
      • K(a);OGATE,S_FLIGHT::R1(A)
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