MESON Chess Problem Database

Problem Display
PID: 263416 (6RK/8/8/7k/8/7p/6R1/8 w - - 0 1)

Lipton, Michael

The Problemist Supplement, 2019

6RK/8/8/7k/8/7p/6R1/8

#2

3 + 2

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Rxh2#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Rh8#
      • 1...Kh4
        • 2.Rh8#
      • 1...hxg2!
    • 1.Rh2?
      • threat
        • 2.Rxh3#
      • 1...Kh6
        • 2.Rxh3#
      • 1...Kh4!
    • 1.R2g3?
      • threat
        • 2.Rxh3#
      • 1...Kh6
        • 2.Rxh3#
      • 1...h2
        • 2.Rh3#
      • 1...Kh4!
    • 1.R2g4?
      • 1...Kh6
        • 2.Rh4#
      • 1...h2!
    • 1.R2g5+?
      • 1...Kh6
        • 2.R8g6#
      • 1...Kh4!
    • 1.R2g6?
      • 1...Kh4
        • 2.Rh6#
      • 1...h2!
    • 1.R8g5+?
      • 1...Kh4
        • 2.R2g4#
      • 1...Kh6!
    • 1.R8g7?
      • threat
        • 2.Rh7#
      • 1...Kh4
        • 2.Rh7#
      • 1...Kh6
        • 2.Rh7#
      • 1...hxg2!
  • Keys
    • 1.R2g7!
      • threat
        • 2.Rh7#
      • 1...Kh4
        • 2.Rh7#
      • 1...Kh6
        • 2.Rh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::R(A),XP(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • R(B)
      • Vars
        • K(b);P-FLIGHT::R(B)
      • Refutation
        • P(a);XR(A)
    • Try
      • R(A);P_PINP(a)
      • Threat
        • R(A),XP(a)
      • Vars
        • K(b);P-FLIGHT::R(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • R(A),XP(a)
      • Vars
        • K(b);P-FLIGHT::R(A),XP(a)
        • P(a);::R(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::R(A)
      • Refutation
        • P(a);
    • Try
      • R(A);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::R1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::R(A)
      • Refutation
        • P(a);
    • Try
      • R(B);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::R1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • K(b);P-FLIGHT::R(B)
        • K(b);P-FLIGHT::R1(B)
      • Refutation
        • P(a);XR(A)
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • K(b);P-FLIGHT::R(A)
      • K(b);P-FLIGHT::R1(A)
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