MESON Chess Problem Database

Problem Display
PID: 253046 (8/3p2Kb/Q7/3pp1pR/N2kn3/3N4/4R3/n7 w - - 0 1)

de Haas, Bastian Evert

The Problemist, 1991

8/3p2Kb/Q7/3pp1pR/N2kn3/3N4/4R3/n7

#2

6 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Se1?
      • threat
        • 2.Sf3#
        • 2.Qd3#
      • 1...Sf2
        • 2.Sf3#
      • 1...Sc3
        • 2.Sf3#
      • 1...Sg3
        • 2.Sf3#
      • 1...Sc5
        • 2.Sf3#
      • 1...Sd6
        • 2.Sf3#
      • 1...Sf6
        • 2.Sf3#
      • 1...g4
        • 2.Qd3#
      • 1...Sd2!
    • 1.Sdb2?
      • threat
        • 2.Qd3#
      • 1...Sd2
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sf2
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sc3
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sg3
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sd6
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sf6
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sc5!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Sf3#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Sd2
        • 2.Qb6#
        • 2.Qa7#
      • 1...g4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::S(B)
        • P(f);::QAR1(E)
      • Refutation
        • S(c);
    • Try
      • S(B);
      • Threat
        • QAR1(E)
      • Refutation
        • S(c);
  • Actual
    • S(B);XP(e)
    • Threat
      • S(B)
    • Vars
      • K(b);OGATEB,P_SPINP(f),P_SPINS(c),S_FLIGHT,XS(B)::QAB1(E)
      • P(f);::QAR1(E)
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