MESON Chess Problem Database

Problem Display
PID: 32686 (3b4/8/4Q3/pp2p2b/4k1p1/5NPB/5P2/4K3 w - - 0 1)

Thompson, Theophilus Augustus

Chess Problems by Theophilus A. Thompson, 1873

3b4/8/4Q3/pp2p2b/4k1p1/5NPB/5P2/4K3

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf3
      • 2.Qf5#
  • Tries
    • 1.Qxe5+?
      • 1...Kxf3
        • 2.Qf4#
        • 2.Qe2#
        • 2.Qe3#
        • 2.Qd5#
        • 2.Qf5#
      • 1...Kd3!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Bf1#
      • 1...Kf5!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Sd2#
      • 1...Kxf3
        • 2.Qf5#
        • 2.Qd3#
      • 1...gxf3
        • 2.Bf5#
      • 1...Bg5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINP(e),S_FLIGHT,XS(C)::QAR2(F)
  • Tries
    • Try
      • Q(F);CHECK,XP(e)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK,N_PINP(e)
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(F);N_PINP(e)
    • Threat
      • S(C)
    • Vars
      • P(b);OGATE,SBLOCK,XS(C)::B(E)
      • B(g);N_GUARD::S(C),XB(g)
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