MESON Chess Problem Database

Problem Display
PID: 94625 (1R6/8/2b5/8/8/3B4/1p6/2k1K2R w - - 0 1)

Shakhnazaryan, Albert Serapionovic

Magadanskaya Pravda, 1989

1R6/8/2b5/8/8/3B4/1p6/2k1K2R

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Ke2#
    • 1...Bd7
      • 2.Ke2#
    • 1...Be8
      • 2.Ke2#
    • 1...b1Q
      • 2.Rxb1#
    • 1...b1S
      • 2.Rxb1#
    • 1...b1B
      • 2.Rxb1#
    • 1...b1R
      • 2.Rxb1#
  • Tries
    • 1.Rb5?
      • threat
        • 2.Rc5#
      • 1...Bxb5
        • 2.Ke2#
      • 1...b1Q
        • 2.Rxb1#
      • 1...b1S
        • 2.Rxb1#
      • 1...b1B
        • 2.Rxb1#
      • 1...b1R
        • 2.Rxb1#
      • 1...Bd5!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rc3#
      • 1...b1Q
        • 2.Rxb1#
      • 1...b1S
        • 2.Rxb1#
      • 1...b1B
        • 2.Rxb1#
      • 1...b1R
        • 2.Rxb1#
      • 1...Ba4
        • 2.Ke2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD::R(B)+K(A)
    • P(b);OGATE::R1(D),XQ(b)
    • P(b);OGATE::R1(D),XS(b)
    • P(b);OGATE::R1(D),XB(b)
    • P(b);OGATE::R1(D),XR(b)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • B(c);N_GUARD,XR(D)::R(B)+K(A)
        • P(b);OGATE::R1(D),XQ(b)
        • P(b);OGATE::R1(D),XS(b)
        • P(b);OGATE::R1(D),XB(b)
        • P(b);OGATE::R1(D),XR(b)
      • Refutation
        • B(c);
  • Actual
    • R(D);
    • Threat
      • R(D)
    • Vars
      • P(b);OGATE::R1(D),XQ(b)
      • P(b);OGATE::R1(D),XS(b)
      • P(b);OGATE::R1(D),XB(b)
      • P(b);OGATE::R1(D),XR(b)
      • B(c);N_GUARD::R(B)+K(A)
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