MESON Chess Problem Database

Problem Display
PID: 120729 (8/Q1N5/2p3p1/2P3r1/n2kp3/4N1P1/3K4/8 w - - 0 1)

Sheedy, Thomas F

Manitoba Free Press, 1923

8/Q1N5/2p3p1/2P3r1/n2kp3/4N1P1/3K4/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Qa1#
  • Tries
    • 1.Sb5+?
      • 1...Ke5
        • 2.Qe7#
      • 1...cxb5!
    • 1.Qxa4+?
      • 1...Ke5
        • 2.Qa1#
      • 1...Kxc5!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Se6#
      • 1...Kxc5
        • 2.Se6#
      • 1...Ke5
        • 2.Qh8#
      • 1...Sxc5
        • 2.Qb2#
      • 1...Re5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,P_SPINS(a),SBLOCK,XP(D)::QAB(E)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(E)
      • Refutation
        • P(e);XS(F)
    • Try
      • Q(E);CHECK,XS(a)
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • K(b);S_FLIGHT,XP(D)
  • Actual
    • Q(E);
    • Threat
      • S(F)
    • Vars
      • K(b);S_FLIGHT,XP(D)::S(F)
      • K(b);S_FLIGHT::QAB(E)
      • S(a);N_GUARD,SBLOCK,XP(D)::QAB(E)
      • R(d);SBLOCK::QAR2(E)
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