MESON Chess Problem Database

Problem Display
PID: 183691 (8/8/8/8/B1bN4/p7/4R3/k1K5 w - - 0 1)

Atamanova, Margarita

Kudesnik, 2018

8/8/8/8/B1bN4/p7/4R3/k1K5

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Sc2#
    • 1...Bb3
      • 2.Sxb3#
    • 1...Bd3
      • 2.Sb3#
    • 1...Bb5
      • 2.Sb3#
    • 1...Ba6
      • 2.Sb3#
    • 1...a2
      • 2.Sc2#
  • Tries
    • 1.Ra2+?
      • 1...Bxa2
        • 2.Sc2#
      • 1...Kxa2!
    • 1.Rb2?
      • threat
        • 2.Sc2#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Bd3
        • 2.Sb3#
      • 1...axb2+!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Sc2#
        • 2.Ra2#
      • 1...Bxe2
        • 2.Sc2#
      • 1...Bxb3
        • 2.Sxb3#
      • 1...Bd3
        • 2.Ra2#
      • 1...a2
        • 2.Sc2#
        • 2.Rxa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(c);SBLOCK::S(D)
    • B(c);N_GUARD::S(D),XB(c)
    • B(c);N_GUARD::S(D)
    • P(b);SBLOCK::S(D)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • B(c);SBLOCK,XR(B)::S(D)
      • Refutation
        • K(a);P-FLIGHT,XR(B)
    • Try
      • R(B);
      • Threat
        • S(D)
      • Vars
        • B(c);N_GUARD::S(D),XB(c)
        • B(c);N_GUARD::S(D)
      • Refutation
        • P(b);CHECK,XR(B)
  • Actual
    • B(C);
    • Threat
      • DUALS(2)
    • Vars
      • B(c);XR(B)::S(D)
      • B(c);XB(C)::S(D),XB(c)
      • B(c);::R1(B)
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