MESON Chess Problem Database

Problem Display
PID: 134127 (k6n/6RB/2K1p3/8/8/6B1/8/8 w - - 0 1)

Sundman, Gote

2nd Comm., Springaren, 1949

k6n/6RB/2K1p3/8/8/6B1/8/8

#2

4 + 3

145 StrateGems 2009
145 StrateGems 2017
56 The Problemist 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Be4?
      • threat
        • 2.Kb5#
        • 2.Kc5#
        • 2.Kb6#
      • 1...Sf7
        • 2.Kb6#
      • 1...e5!
    • 1.Rg4?
      • threat
        • 2.Ra4#
      • 1...Ka7
        • 2.Ra4#
      • 1...e5!
    • 1.Rg5?
      • threat
        • 2.Ra5#
      • 1...Ka7
        • 2.Ra5#
      • 1...e5!
  • Keys
    • 1.Kb6!
      • threat
        • 2.Be4#
        • 2.Ra7#
        • 2.Rg8#
      • 1...e5
        • 2.Rg8#
      • 1...Sg6
        • 2.Ra7#
      • 1...Sf7
        • 2.Be4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::B(D)+K(B)
      • Refutation
        • P(a);
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • P(a);
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • P(a);
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • DUALS(3)
    • Vars
      • P(a);::R(C)
      • S(c);::R1(C)
      • S(c);::B(D)
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