MESON Chess Problem Database

Problem Display
PID: 246112 (5B2/K7/2B5/k2p4/8/4R3/r7/8 w - - 0 1)

Zinoviev, Nikolai

Smena (Moscow), 1997

5B2/K7/2B5/k2p4/8/4R3/r7/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Ra3#
    • 1...Rc2
      • 2.Ra3#
    • 1...Rd2
      • 2.Ra3#
    • 1...Re2
      • 2.Ra3#
    • 1...Rf2
      • 2.Ra3#
    • 1...Rg2
      • 2.Ra3#
    • 1...Rh2
      • 2.Ra3#
    • 1...Ra3
      • 2.Rxa3#
    • 1...d4
      • 2.Re5#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Rxd5#
      • 1...Rb2
        • 2.Ra3#
      • 1...Rc2
        • 2.Ra3#
      • 1...Rd2
        • 2.Ra3#
      • 1...d4!
    • 1.Re4?
      • threat
        • 2.Bb4#
      • 1...Rb2
        • 2.Ra4#
      • 1...Ra4
        • 2.Rxa4#
      • 1...d4
        • 2.Re5#
      • 1...dxe4!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Bb4#
      • 1...Ra4
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • R(a);N_GUARD::R(A)
    • R(a);N_GUARD::R(A),XR(a)
    • P(c);OGATEB::R(A)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A),XP(c)
      • Vars
        • R(a);N_GUARD::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • B(D)
      • Vars
        • R(a);N_GUARD::R1(A)
        • R(a);N_GUARD::R1(A),XR(a)
        • P(c);OGATEB::R(A)
      • Refutation
        • P(c);XR(A)
  • Actual
    • R(A);
    • Threat
      • B(D)
    • Vars
      • R(a);SBLOCK::R1(A)
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