MESON Chess Problem Database

Problem Display
PID: 225208 (k1K5/p2N4/8/8/2R5/2n5/B7/8 w - - 0 1)

Zimmer, Eligiusz

Suomen Shakki, 2005

k1K5/p2N4/8/8/2R5/2n5/B7/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rc7?
      • 1...Sb1
        • 2.Bd5#
      • 1...Sd1
        • 2.Bd5#
      • 1...Se2
        • 2.Bd5#
      • 1...Sa4
        • 2.Bd5#
      • 1...Se4
        • 2.Bd5#
      • 1...Sb5
        • 2.Bd5#
      • 1...Sd5
        • 2.Bxd5#
      • 1...a5
        • 2.Sb6#
      • 1...a6
        • 2.Sb6#
      • 1...Sxa2!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Sb6#
      • 1...Sxa4
        • 2.Bd5#
      • 1...a5
        • 2.Rxa5#
      • 1...a6
        • 2.Rxa6#
      • 1...Sd5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Vars
        • S(a);N_GUARD::B(A)
        • S(a);N_GUARD::B(A),XS(a)
        • P(b);N_GUARD::S(C)
      • Refutation
        • S(a);XB(A)
  • Actual
    • R(B);P_PINP(b)
    • Threat
      • S(C)
    • Vars
      • S(a);N_GUARD,N_SPINP(b),XR(B)::B(A)
      • P(b);OGATEB::R(B),XP(b)
      • S(a);N_GUARD::B(A),XS(a)
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