MESON Chess Problem Database

Problem Display
PID: 46640 (r3k3/1R6/3PKP2/4p3/8/8/8/8 w - - 0 1)

Pustovoi, Boris

Molodoi sibirjak, 1962

r3k3/1R6/3PKP2/4p3/8/8/8/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rb8#
    • 1...Ra2
      • 2.Rb8#
    • 1...Ra3
      • 2.Rb8#
    • 1...Ra4
      • 2.Rb8#
    • 1...Ra5
      • 2.Rb8#
    • 1...Ra6
      • 2.Rb8#
    • 1...Ra7
      • 2.Rb8#
    • 1...Rb8
      • 2.Rxb8#
  • Tries
    • 1.Rg7?
      • threat
        • 2.Rg8#
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf8!
    • 1.f7+?
      • 1...Kd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kf8!
  • Keys
    • 1.Rh7!
      • threat
        • 2.Rh8#
      • 1...Kd8
        • 2.Rh8#
      • 1...Kf8
        • 2.Rh8#

This anticipates 172348(1997)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::R(D)
    • R(b);N_GUARD,P_PINP(A)::R(D)
    • R(b);N_GUARD::R(D),XR(b)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • K(c);P-FLIGHT::R(D)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(c);P-FLIGHT::P=Q
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • K(c);P-FLIGHT::R(D)
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