MESON Chess Problem Database

Problem Display
PID: 200650 (Q7/4KB2/4N1p1/4k1p1/6P1/2n3pP/1B2nPp1/2r1rbb1 w - - 0 1)

Hjelle, David

Stella Polaris, 1967

Q7/4KB2/4N1p1/4k1p1/6P1/2n3pP/1B2nPp1/2r1rbb1

#2

8 + 11

SOLUTION

  • SOUND
  • Tries
    • 1.Sxg5?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qd5#
      • 1...Sd4
        • 2.Qb8#
      • 1...Sf4
        • 2.Sf3#
        • 2.Qh8#
      • 1...Kf4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Sd3#
      • 1...Sd4
        • 2.Qb8#
      • 1...Sf4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);XP(j)
      • Threat
        • QAR1(H)
      • Vars
        • K(i);S_FLIGHT::QAR1(H)
        • S(e);N_SPINS(g),SBLOCK::QAB(H)
      • Refutation
        • K(i);N_SPINS(g),S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR1(H)
    • Vars
      • K(i);S_FLIGHT::QAR1(H)
      • K(i);N_SPINS(g),S_FLIGHT::S(E)
      • S(e);N_SPINS(g),SBLOCK::QAB(H)
      • S(e);SBLOCK::QAB(H)
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Developed and maintained by Brian Stephenson.
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