MESON Chess Problem Database

Problem Display
PID: 249974 (2KB4/p7/8/2k5/P1N1Q3/6bp/1P4pq/8 w - - 0 1)

Hemmingsson, Artur

Stella Polaris, 1969

2KB4/p7/8/2k5/P1N1Q3/6bp/1P4pq/8

#2

6 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • threat
        • 2.Sb7#
      • 1...Kd6
        • 2.Sb7#
        • 2.Be7#
      • 1...Bc7!
    • 1.Bb6+?
      • 1...Kb4
        • 2.Sd2#
        • 2.Sa5#
      • 1...axb6!
    • 1.Qd5+?
      • 1...Kb4
        • 2.Qb5#
      • 1...Kxd5!
    • 1.Qd4+?
      • 1...Kb4
        • 2.Sd2#
        • 2.Sa5#
      • 1...Kc6
        • 2.Sa5#
      • 1...Kxd4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sb7#
      • 1...Kxd6
        • 2.Be7#
      • 1...Bxd6
        • 2.b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Refutation
        • B(c);
    • Try
      • B(F);CHECK
      • Refutation
        • P(f);XB(F)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(e);P-FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT::S(C)
      • Refutation
        • K(e);S_FLIGHT,XQ(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(C)::B(F)
      • B(c);SBLOCK,XS(C)::P(A)
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